Set up protocol forwarding | Load Balancing

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<span class="devsite-nav-text" tooltip > Overview </span> </a> </li> <li class="devsite-nav-item"> <a href="/load-balancing/docs/load-balancing-overview" class="devsite-nav-title gc-analytics-event devsite-nav-has-children devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Guides" track-name="guides" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Guides" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip menu="_book"> Guides </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="_book"> </span> </a> </li> <li class="devsite-nav-item"> <a href="/load-balancing/docs/apis" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Reference" track-name="reference" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Reference" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Reference </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> <li class="devsite-nav-item"> <a href="/load-balancing/docs/resources" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Resources" track-name="resources" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Resources" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Resources </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/tech-area-overviews" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Technology areas" track-name="technology-areas" 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track-metadata-position="nav" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Console" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Console </span> </a> </li> <li class="devsite-nav-item"> <a href="/contact" class="cta-button-secondary button" data-overflow-container="left" track-type="contact" track-name="sales" track-metadata-eventDetail="nav" data-overflow-wrapper="tab" track-metadata-position="nav" data-overflow="devsite-tabs-wrapper" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Contact Us" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Contact Us </span> </a> </li> <li class="devsite-nav-item"> <a href="//console.cloud.google.com/freetrial" class="cloud-free-trial-button cta-button-primary button-primary button cloud-button cloud-button--primary" data-overflow-container="right" referrerpolicy="no-referrer-when-downgrade" data-overflow-class="devsite-header-link devsite-top-button button cloud-free-trial-button cloud-free-trial-enabled cloud-button cloud-button--primary" track-type="freeTrial" data-overflow="devsite-top-logo-row" track-metadata-position="nav" track-metadata-eventDetail="nav" track-name="gcpCta" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Start free" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Start free </span> </a> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="_book"> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Discover</span> </div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/load-balancing-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/load-balancing-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/load-balancing-overview" ><span class="devsite-nav-text" tooltip>Cloud Load Balancing overview</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/choosing-load-balancer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/choosing-load-balancer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/choosing-load-balancer" ><span class="devsite-nav-text" tooltip>Choose a load balancer</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/features" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: 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data-label="Book nav link, pathname: /load-balancing/docs/access-control/iam-conditions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/access-control/iam-conditions" ><span class="devsite-nav-text" tooltip>IAM Conditions for forwarding rules</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Organization policy constraints</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/org-policy-constraints" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/org-policy-constraints" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/org-policy-constraints" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/custom-constraints" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/custom-constraints" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/custom-constraints" ><span class="devsite-nav-text" tooltip>Use custom constraints</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Application Load Balancer (HTTP/HTTPS)</span> </div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/application-load-balancer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/application-load-balancer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/application-load-balancer" ><span class="devsite-nav-text" tooltip>Overview</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>External load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https" ><span class="devsite-nav-text" tooltip>Architecture overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up global load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setup-global-ext-https-compute" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setup-global-ext-https-compute" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setup-global-ext-https-compute" ><span class="devsite-nav-text" tooltip>Managed VM instance group backend</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setup-global-ext-https-buckets" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setup-global-ext-https-buckets" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setup-global-ext-https-buckets" ><span class="devsite-nav-text" tooltip>Cloud Storage (backend buckets)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setup-global-ext-https-external-backend" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setup-global-ext-https-external-backend" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setup-global-ext-https-external-backend" ><span class="devsite-nav-text" tooltip>External backend (internet NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setup-global-ext-https-serverless" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setup-global-ext-https-serverless" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setup-global-ext-https-serverless" ><span class="devsite-nav-text" tooltip>Cloud Run, App Engine, or Cloud Run functions backends (serverless NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-ext-global-https-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-ext-global-https-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-ext-global-https-hybrid" ><span class="devsite-nav-text" tooltip>On-premises or other cloud backends (zonal and hybrid NEG)</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/traffic-management-global" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/traffic-management-global" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/traffic-management-global" ><span class="devsite-nav-text" tooltip>Traffic management overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-global-traffic-mgmt" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-global-traffic-mgmt" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-global-traffic-mgmt" ><span class="devsite-nav-text" tooltip>Set up traffic management</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-global-http-https-redirect" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-global-http-https-redirect" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-global-http-https-redirect" ><span class="devsite-nav-text" tooltip>Set up HTTP-to-HTTPS redirect</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/set-up-global-ext-https-shared-vpc" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/set-up-global-ext-https-shared-vpc" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/set-up-global-ext-https-shared-vpc" ><span class="devsite-nav-text" tooltip>Set up load balancer with Shared VPC</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/custom-headers-global" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/custom-headers-global" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/custom-headers-global" ><span class="devsite-nav-text" tooltip>Create custom headers in backend services</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Custom error response</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/custom-error-response" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/custom-error-response" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/custom-error-response" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/configure-custom-error-responses" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/configure-custom-error-responses" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/configure-custom-error-responses" ><span class="devsite-nav-text" tooltip>Configure custom error responses</span></a></li></ul></div></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up global load balancer (classic)</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/ext-http-lb-tf-module-examples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/ext-http-lb-tf-module-examples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/ext-http-lb-tf-module-examples" ><span class="devsite-nav-text" tooltip>Terraform examples</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/ext-https-lb-simple" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/ext-https-lb-simple" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/ext-https-lb-simple" ><span class="devsite-nav-text" tooltip>Managed VM instance group backend</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/ext-load-balancer-backend-buckets" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/ext-load-balancer-backend-buckets" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/ext-load-balancer-backend-buckets" ><span class="devsite-nav-text" tooltip>Cloud Storage (backend buckets)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-https-external-backend-internet-neg" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-https-external-backend-internet-neg" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-https-external-backend-internet-neg" ><span class="devsite-nav-text" tooltip>External backend (internet NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-https-serverless" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-https-serverless" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-https-serverless" ><span class="devsite-nav-text" tooltip>Cloud Run, App Engine, or Cloud Functions backends (serverless NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-ext-https-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-ext-https-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-ext-https-hybrid" ><span class="devsite-nav-text" tooltip>On-premises or other cloud backends (zonal and hybrid NEG) </span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Migrate resources</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/https/migrate-to-global" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/migrate-to-global" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/migrate-to-global" ><span class="devsite-nav-text" tooltip>Overview</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/https/migrate-from-classic-global" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/migrate-from-classic-global" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/migrate-from-classic-global" ><span class="devsite-nav-text" tooltip>Migrate to global external Application Load Balancer</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/https/roll-back-migrated-resources" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/roll-back-migrated-resources" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/roll-back-migrated-resources" ><span class="devsite-nav-text" tooltip>Roll back to classic Application Load Balancer</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/traffic-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/traffic-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/traffic-management" ><span class="devsite-nav-text" tooltip>Traffic management overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/custom-headers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/custom-headers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/custom-headers" ><span class="devsite-nav-text" tooltip>Create custom headers in backend services</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-query-and-header-routing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-query-and-header-routing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-query-and-header-routing" ><span class="devsite-nav-text" tooltip>Set up custom header and query parameter-based routing</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-url-redirects-classic" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-url-redirects-classic" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-url-redirects-classic" ><span class="devsite-nav-text" tooltip>Set up URL redirect</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-http-https-redirect" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-http-https-redirect" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-http-https-redirect" ><span class="devsite-nav-text" tooltip>Set up HTTP-to-HTTPS redirect</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-url-rewrite" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-url-rewrite" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-url-rewrite" ><span class="devsite-nav-text" tooltip>Set up URL rewrite</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up regional load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-reg-ext-https-lb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-reg-ext-https-lb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-reg-ext-https-lb" ><span class="devsite-nav-text" tooltip>Managed VM instance group backend</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-reg-ext-https-serverless" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-reg-ext-https-serverless" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-reg-ext-https-serverless" ><span class="devsite-nav-text" tooltip>Cloud Run backends (serverless NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-reg-ext-https-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-reg-ext-https-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-reg-ext-https-hybrid" ><span class="devsite-nav-text" tooltip>On-premises or other cloud backends (zonal and hybrid NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setup-regional-ext-https-external-backend" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setup-regional-ext-https-external-backend" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setup-regional-ext-https-external-backend" ><span class="devsite-nav-text" tooltip>External backend (internet NEG)</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/traffic-management-regional" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/traffic-management-regional" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/traffic-management-regional" ><span class="devsite-nav-text" tooltip>Traffic management overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-reg-traffic-mgmt" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-reg-traffic-mgmt" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-reg-traffic-mgmt" ><span class="devsite-nav-text" tooltip>Set up traffic management</span></a></li><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/https/reg-applb-ha-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/reg-applb-ha-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/reg-applb-ha-overview" ><span class="devsite-nav-text" tooltip>Set up high availability</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-reg-http-https-redirect" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-reg-http-https-redirect" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-reg-http-https-redirect" ><span class="devsite-nav-text" tooltip>Set up HTTP-to-HTTPS redirect</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-reg-ext-shared-vpc" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-reg-ext-shared-vpc" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-reg-ext-shared-vpc" ><span class="devsite-nav-text" tooltip>Set up load balancer with Shared VPC</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/custom-headers-regional" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/custom-headers-regional" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/custom-headers-regional" ><span class="devsite-nav-text" tooltip>Create custom headers in URL maps</span></a></li></ul></div></li></ul></div></li><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/https/applb-failover-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/applb-failover-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/applb-failover-overview" ><span class="devsite-nav-text" tooltip>Fail over to regional load balancers</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Monitor and troubleshoot</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/https-logs-monitor-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/https-logs-monitor-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/https-logs-monitor-overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/https-logging-monitoring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/https-logging-monitoring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/https-logging-monitoring" ><span class="devsite-nav-text" tooltip>Global load balancers</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/https-reg-logging-monitoring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/https-reg-logging-monitoring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/https-reg-logging-monitoring" ><span class="devsite-nav-text" tooltip>Regional load balancers</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/troubleshooting-ext-https-lbs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/troubleshooting-ext-https-lbs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/troubleshooting-ext-https-lbs" ><span class="devsite-nav-text" tooltip>Troubleshooting</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/http-load-balancing-best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/http-load-balancing-best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/http-load-balancing-best-practices" ><span class="devsite-nav-text" tooltip>Best practices</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Explore tutorials</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-https" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-https" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-https" ><span class="devsite-nav-text" tooltip>Request routing to a multi-region external HTTPS load balancer</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tutorials/faster-performance-improved-protection" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tutorials/faster-performance-improved-protection" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tutorials/faster-performance-improved-protection" ><span class="devsite-nav-text" tooltip>Faster web performance and improved web protection for load balancing</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tutorials/http-https-over-same-domain" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tutorials/http-https-over-same-domain" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tutorials/http-https-over-same-domain" ><span class="devsite-nav-text" tooltip>Deliver HTTP and HTTPS content over the same published domain</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tutorials/optimize-app-latency" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tutorials/optimize-app-latency" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tutorials/optimize-app-latency" ><span class="devsite-nav-text" tooltip>Optimize application latency with load balancing</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tutorials/about-capacity-optimization-with-global-lb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tutorials/about-capacity-optimization-with-global-lb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tutorials/about-capacity-optimization-with-global-lb" ><span class="devsite-nav-text" tooltip>Application capacity optimizations with global load balancing</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tutorials/capacity-management-with-load-balancing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tutorials/capacity-management-with-load-balancing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tutorials/capacity-management-with-load-balancing" ><span class="devsite-nav-text" tooltip>Capacity management with load balancing</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Internal load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal" ><span class="devsite-nav-text" tooltip>Architecture overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up cross-region load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-l7-cross-reg-internal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-l7-cross-reg-internal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-l7-cross-reg-internal" ><span class="devsite-nav-text" tooltip>Managed VM instance group backend</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-l7-cross-reg-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-l7-cross-reg-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-l7-cross-reg-hybrid" ><span class="devsite-nav-text" tooltip>On-premises or other cloud backends (zonal and hybrid NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-l7-cross-reg-serverless" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-l7-cross-reg-serverless" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-l7-cross-reg-serverless" ><span class="devsite-nav-text" tooltip>Cloud Run backends (serverless NEG)</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up regional load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/int-https-lb-tf-examples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/int-https-lb-tf-examples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/int-https-lb-tf-examples" ><span class="devsite-nav-text" tooltip>Terraform examples</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-l7-internal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-l7-internal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-l7-internal" ><span class="devsite-nav-text" tooltip>VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-l7-internal-serverless" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-l7-internal-serverless" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-l7-internal-serverless" ><span class="devsite-nav-text" tooltip>Cloud Run backends (serverless NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-int-https-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-int-https-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-int-https-hybrid" ><span class="devsite-nav-text" tooltip>On-premises or other cloud backends (zonal and hybrid NEG)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setup-regional-int-https-external-backend" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setup-regional-int-https-external-backend" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setup-regional-int-https-external-backend" ><span class="devsite-nav-text" tooltip>External backend (internet NEG)</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Traffic management</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/traffic-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/traffic-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/traffic-management" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-traffic-management" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-traffic-management" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-traffic-management" ><span class="devsite-nav-text" tooltip>Set up traffic management</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/setting-up-http-to-https-redirect" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/setting-up-http-to-https-redirect" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/setting-up-http-to-https-redirect" ><span class="devsite-nav-text" tooltip>Set up HTTP-to-HTTPS redirect</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/custom-headers" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/custom-headers" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/custom-headers" ><span class="devsite-nav-text" tooltip>Create custom headers in URL maps</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/l7-internal-shared-vpc" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/l7-internal-shared-vpc" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/l7-internal-shared-vpc" ><span class="devsite-nav-text" tooltip>Set up load balancer with Shared VPC</span></a></li><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/l7-internal/ilb-sd-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/ilb-sd-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/ilb-sd-overview" ><span class="devsite-nav-text" tooltip>Service Directory registration</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/internal-https-lb-and-other-networks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/internal-https-lb-and-other-networks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/internal-https-lb-and-other-networks" ><span class="devsite-nav-text" tooltip>Load balancing and connected networks</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Monitor and troubleshoot</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/monitoring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/monitoring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/monitoring" ><span class="devsite-nav-text" tooltip>View logs and metrics</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/l7-internal/troubleshooting-l7-ilb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/l7-internal/troubleshooting-l7-ilb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/l7-internal/troubleshooting-l7-ilb" ><span class="devsite-nav-text" tooltip>Troubleshooting</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/https/convert-global-ext-https-dualstack" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/convert-global-ext-https-dualstack" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/convert-global-ext-https-dualstack" ><span class="devsite-nav-text" tooltip>Convert load balancer to IPv6</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/backend-service-load-testing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/backend-service-load-testing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/backend-service-load-testing" ><span class="devsite-nav-text" tooltip>Load testing backends</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Proxy Network Load Balancer (TCP/SSL proxy)</span> </div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/proxy-network-load-balancer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/proxy-network-load-balancer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/proxy-network-load-balancer" ><span class="devsite-nav-text" tooltip>Overview</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>External load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp" ><span class="devsite-nav-text" tooltip>Architecture overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up global load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-global-ext-proxy-ssl" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-global-ext-proxy-ssl" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-global-ext-proxy-ssl" ><span class="devsite-nav-text" tooltip>Global SSL proxy with VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-global-ext-proxy-tcp" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-global-ext-proxy-tcp" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-global-ext-proxy-tcp" ><span class="devsite-nav-text" tooltip>Global TCP proxy with VM instance group backends</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up global load balancer (classic)</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/ext-tcp-proxy-lb-tf-examples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/ext-tcp-proxy-lb-tf-examples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/ext-tcp-proxy-lb-tf-examples" ><span class="devsite-nav-text" tooltip>Terraform examples</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl/setting-up-ssl" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl/setting-up-ssl" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl/setting-up-ssl" ><span class="devsite-nav-text" tooltip>Global SSL proxy with VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/setting-up-tcp" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/setting-up-tcp" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/setting-up-tcp" ><span class="devsite-nav-text" tooltip>Global TCP proxy with VM instance group backends</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up regional load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-migs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-migs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-migs" ><span class="devsite-nav-text" tooltip>VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-zonal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-zonal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-zonal" ><span class="devsite-nav-text" tooltip>Zonal NEG backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-hybrid" ><span class="devsite-nav-text" tooltip>Hybrid connectivity (Hybrid NEGs)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-internet" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-internet" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-ext-reg-tcp-proxy-internet" ><span class="devsite-nav-text" tooltip>External backend (internet NEG)</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Internal load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/internal-proxy" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/internal-proxy" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/internal-proxy" ><span class="devsite-nav-text" tooltip>Architecture overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up cross-region load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/setup-cross-reg-proxy-migs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/setup-cross-reg-proxy-migs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/setup-cross-reg-proxy-migs" ><span class="devsite-nav-text" tooltip>Managed VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/setup-cross-reg-proxy-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/setup-cross-reg-proxy-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/setup-cross-reg-proxy-hybrid" ><span class="devsite-nav-text" tooltip>On-premises or other cloud backends (zonal and hybrid NEG)</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up regional load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-int-tcp-proxy-migs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-int-tcp-proxy-migs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-int-tcp-proxy-migs" ><span class="devsite-nav-text" tooltip>Managed VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-int-tcp-proxy-zonal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-int-tcp-proxy-zonal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-int-tcp-proxy-zonal" ><span class="devsite-nav-text" tooltip>Zonal NEG backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-int-tcp-proxy-hybrid" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-int-tcp-proxy-hybrid" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-int-tcp-proxy-hybrid" ><span class="devsite-nav-text" tooltip>Hybrid connectivity (Hybrid NEGs)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/set-up-int-tcp-proxy-internet" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/set-up-int-tcp-proxy-internet" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/set-up-int-tcp-proxy-internet" ><span class="devsite-nav-text" tooltip>External backend (internet NEG)</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/internal-proxy-lb-and-other-networks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/internal-proxy-lb-and-other-networks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/internal-proxy-lb-and-other-networks" ><span class="devsite-nav-text" tooltip>Load balancing and connected networks</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Monitor and troubleshoot</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/tcp-ssl-proxy-logging-monitoring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/tcp-ssl-proxy-logging-monitoring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/tcp-ssl-proxy-logging-monitoring" ><span class="devsite-nav-text" tooltip>View logs and metrics</span></a></li></ul></div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/tcp/convert-global-ext-proxy-dualstack" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tcp/convert-global-ext-proxy-dualstack" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tcp/convert-global-ext-proxy-dualstack" ><span class="devsite-nav-text" tooltip>Convert load balancer to IPv6</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Passthrough Network Load Balancer (TCP/UDP)</span> </div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/passthrough-network-load-balancer" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/passthrough-network-load-balancer" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/passthrough-network-load-balancer" ><span class="devsite-nav-text" tooltip>Overview</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>External load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/network/networklb-backend-service" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/networklb-backend-service" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/networklb-backend-service" ><span class="devsite-nav-text" tooltip>Backend service-based architecture</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/networklb-target-pools" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/networklb-target-pools" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/networklb-target-pools" ><span class="devsite-nav-text" tooltip>Target pool-based architecture</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/network/setting-up-network-backend-service" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/setting-up-network-backend-service" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/setting-up-network-backend-service" ><span class="devsite-nav-text" tooltip>VM instance group backends (TCP/UDP only)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/setting-up-networklb-multiple-protocols" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/setting-up-networklb-multiple-protocols" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/setting-up-networklb-multiple-protocols" ><span class="devsite-nav-text" tooltip>VM instance group backends (multiple protocols)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/setting-up-network-zonal-neg" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/setting-up-network-zonal-neg" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/setting-up-network-zonal-neg" ><span class="devsite-nav-text" tooltip>Zonal NEG backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/setting-up-network" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/setting-up-network" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/setting-up-network" ><span class="devsite-nav-text" tooltip>Target pool-based load balancer</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/network/ext-netlb-traffic-distribution" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/ext-netlb-traffic-distribution" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/ext-netlb-traffic-distribution" ><span class="devsite-nav-text" tooltip>Traffic distribution concepts</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Failover for load balancing</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/network/networklb-failover-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/networklb-failover-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/networklb-failover-overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/networklb-setting-up-failover" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/networklb-setting-up-failover" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/networklb-setting-up-failover" ><span class="devsite-nav-text" tooltip>Configure failover</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/configure-weighted-netlb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/configure-weighted-netlb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/configure-weighted-netlb" ><span class="devsite-nav-text" tooltip>Configure weighted load balancing</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/transition-to-backend-services" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/transition-to-backend-services" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/transition-to-backend-services" ><span class="devsite-nav-text" tooltip>Migrate from target pools to backend services</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/networklb-sd-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/networklb-sd-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/networklb-sd-overview" ><span class="devsite-nav-text" tooltip>Service Directory registration</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Explore tutorials</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/network/udp-with-network-load-balancing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/udp-with-network-load-balancing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/udp-with-network-load-balancing" ><span class="devsite-nav-text" tooltip>Use UDP with network load balancers</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Monitor and troubleshoot</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/network/networklb-monitoring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/networklb-monitoring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/networklb-monitoring" ><span class="devsite-nav-text" tooltip>View logs and metrics</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/network/troubleshooting-networklb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/network/troubleshooting-networklb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/network/troubleshooting-networklb" ><span class="devsite-nav-text" tooltip>Troubleshooting</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Internal load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal" ><span class="devsite-nav-text" tooltip>Architecture overview</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Set up load balancer</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/int-tcp-udp-lb-tf-module-examples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/int-tcp-udp-lb-tf-module-examples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/int-tcp-udp-lb-tf-module-examples" ><span class="devsite-nav-text" tooltip>Terraform examples</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/setting-up-internal" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/setting-up-internal" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/setting-up-internal" ><span class="devsite-nav-text" tooltip>VM instance group backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/setting-up-ilb-multiple-protocols" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/setting-up-ilb-multiple-protocols" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/setting-up-ilb-multiple-protocols" ><span class="devsite-nav-text" tooltip>VM instance group backend for multiple protocols</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/setting-up-internal-zonal-neg" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/setting-up-internal-zonal-neg" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/setting-up-internal-zonal-neg" ><span class="devsite-nav-text" tooltip>Zonal NEG backends</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Add capabilities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/int-netlb-traffic-distribution" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/int-netlb-traffic-distribution" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/int-netlb-traffic-distribution" ><span class="devsite-nav-text" tooltip>Traffic distribution concepts</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Failover for load balancing</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/failover-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/failover-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/failover-overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/setting-up-failover" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/setting-up-failover" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/setting-up-failover" ><span class="devsite-nav-text" tooltip>Configure failover</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Load balancers as next hops</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/ilb-next-hop-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/ilb-next-hop-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/ilb-next-hop-overview" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/setting-up-ilb-next-hop" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/setting-up-ilb-next-hop" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/setting-up-ilb-next-hop" ><span class="devsite-nav-text" tooltip>Set up load balancing for third-party appliances</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/multiple-forwarding-rules-same-ip" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/multiple-forwarding-rules-same-ip" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/multiple-forwarding-rules-same-ip" ><span class="devsite-nav-text" tooltip>Forwarding rules that use a common IP address</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/ilb-sd-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/ilb-sd-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/ilb-sd-overview" ><span class="devsite-nav-text" tooltip>Service Directory registration</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/internal-tcp-udp-lb-and-other-networks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/internal-tcp-udp-lb-and-other-networks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/internal-tcp-udp-lb-and-other-networks" ><span class="devsite-nav-text" tooltip>Load balancing and connected networks</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Explore tutorials</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/setting-up-internal-next-hop-tags" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/setting-up-internal-next-hop-tags" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/setting-up-internal-next-hop-tags" ><span class="devsite-nav-text" tooltip>Set up load balancer as next hop (with tags)</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/deploying-ilb-next-hop-vm" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/deploying-ilb-next-hop-vm" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/deploying-ilb-next-hop-vm" ><span class="devsite-nav-text" tooltip>Deploy a hub-and-spoke network</span></a></li></ul></div></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Monitor and troubleshoot</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/internal-logging-monitoring" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/internal-logging-monitoring" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/internal-logging-monitoring" ><span class="devsite-nav-text" tooltip>View logs and metrics</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/internal/troubleshooting-ilb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/internal/troubleshooting-ilb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/internal/troubleshooting-ilb" ><span class="devsite-nav-text" tooltip>Troubleshooting</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Protocol forwarding</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/protocol-forwarding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/protocol-forwarding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/protocol-forwarding" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/set-up-protocol-forwarding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/set-up-protocol-forwarding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/set-up-protocol-forwarding" ><span class="devsite-nav-text" tooltip>Set up protocol forwarding</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/switch-between-target-instance-and-backend-service" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/switch-between-target-instance-and-backend-service" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/switch-between-target-instance-and-backend-service" ><span class="devsite-nav-text" tooltip>Switch between a target instance and a backend service</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Secure</span> </div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>SSL certificates</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl-certificates" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl-certificates" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl-certificates" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl-certificates/self-managed-certs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl-certificates/self-managed-certs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl-certificates/self-managed-certs" ><span class="devsite-nav-text" tooltip>Use self-managed SSL certificates</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl-certificates/google-managed-certs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl-certificates/google-managed-certs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl-certificates/google-managed-certs" ><span class="devsite-nav-text" tooltip>Use Google-managed SSL certificates</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl-certificates/encryption-to-the-backends" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl-certificates/encryption-to-the-backends" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl-certificates/encryption-to-the-backends" ><span class="devsite-nav-text" tooltip>Encryption to the backends</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl-certificates/troubleshooting" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl-certificates/troubleshooting" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl-certificates/troubleshooting" ><span class="devsite-nav-text" tooltip>Troubleshooting</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>SSL policies</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/ssl-policies-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ssl-policies-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ssl-policies-concepts" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/use-ssl-policies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/use-ssl-policies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/use-ssl-policies" ><span class="devsite-nav-text" tooltip>Use SSL policies</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Mutual TLS</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/mtls" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/mtls" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/mtls" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-mtls-ccm" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-mtls-ccm" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-mtls-ccm" ><span class="devsite-nav-text" tooltip>Set up with user-provided certificates</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/https/setting-up-mtls-ca-ccm" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/https/setting-up-mtls-ca-ccm" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/https/setting-up-mtls-ca-ccm" ><span class="devsite-nav-text" tooltip>Set up with private CA</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Authorization policies</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/auth-policy/auth-policy-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/auth-policy/auth-policy-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/auth-policy/auth-policy-overview" ><span class="devsite-nav-text" tooltip>Overview</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li><li class="devsite-nav-item devsite-nav-preview"><a href="/load-balancing/docs/auth-policy/set-up-auth-policy-app-lb" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/auth-policy/set-up-auth-policy-app-lb" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/auth-policy/set-up-auth-policy-app-lb" ><span class="devsite-nav-text" tooltip>Set up policies for Application Load Balancers</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Customize load balancer</span> </div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/service-lb-policy" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/service-lb-policy" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/service-lb-policy" ><span class="devsite-nav-text" tooltip>Advanced load balancing optimizations</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/backend-service" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/backend-service" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/backend-service" ><span class="devsite-nav-text" tooltip>Backend services</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/enabling-connection-draining" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/enabling-connection-draining" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/enabling-connection-draining" ><span class="devsite-nav-text" tooltip>Connection draining</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/firewall-rules" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/firewall-rules" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/firewall-rules" ><span class="devsite-nav-text" tooltip>Firewall rules</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/forwarding-rule-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/forwarding-rule-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/forwarding-rule-concepts" ><span class="devsite-nav-text" tooltip>Forwarding rules</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Health checks</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/health-check-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/health-check-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/health-check-concepts" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/health-checks" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/health-checks" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/health-checks" ><span class="devsite-nav-text" tooltip>Use health checks</span></a></li></ul></div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/dns-names" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/dns-names" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/dns-names" ><span class="devsite-nav-text" tooltip>Internal DNS names</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/ipv6" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/ipv6" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/ipv6" ><span class="devsite-nav-text" tooltip>IPv6</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Network endpoint groups</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/negs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/negs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/negs" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/negs/hybrid-neg-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/negs/hybrid-neg-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/negs/hybrid-neg-concepts" ><span class="devsite-nav-text" tooltip>Hybrid connectivity NEGs</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/negs/internet-neg-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/negs/internet-neg-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/negs/internet-neg-concepts" ><span class="devsite-nav-text" tooltip>Internet NEGs</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/negs/serverless-neg-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/negs/serverless-neg-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/negs/serverless-neg-concepts" ><span class="devsite-nav-text" tooltip>Serverless NEGs</span></a></li><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Zonal NEGs</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/negs/zonal-neg-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/negs/zonal-neg-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/negs/zonal-neg-concepts" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/negs/setting-up-zonal-negs" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/negs/setting-up-zonal-negs" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/negs/setting-up-zonal-negs" ><span class="devsite-nav-text" tooltip>Set up zonal NEGs</span></a></li></ul></div></li></ul></div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/proxy-only-subnets" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/proxy-only-subnets" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/proxy-only-subnets" ><span class="devsite-nav-text" tooltip>Proxy-only subnets</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/tags" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/tags" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/tags" ><span class="devsite-nav-text" tooltip>Tags</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/target-pools" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/target-pools" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/target-pools" ><span class="devsite-nav-text" tooltip>Target pools</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/target-proxies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/target-proxies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/target-proxies" ><span class="devsite-nav-text" tooltip>Target proxies</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>URL maps</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/load-balancing/docs/url-map-concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/url-map-concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/url-map-concepts" ><span class="devsite-nav-text" tooltip>Overview</span></a></li><li class="devsite-nav-item"><a href="/load-balancing/docs/url-map" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/url-map" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/url-map" ><span class="devsite-nav-text" tooltip>Use URL maps</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Operate and maintain</span> </div></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/audit-logging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /load-balancing/docs/audit-logging" track-type="bookNav" track-name="click" track-metadata-eventdetail="/load-balancing/docs/audit-logging" ><span class="devsite-nav-text" tooltip>Audit logging information</span></a></li> <li class="devsite-nav-item"><a href="/load-balancing/docs/health-check-logging" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book 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</devsite-thumb-rating> </div> <devsite-feedback position="header" project-name="Load Balancing" product-id="5173945" bucket="Documentation" context="" version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="header" class="nocontent" project-icon="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/cloud/images/favicons/onecloud/super_cloud.png" > <button> Send feedback </button> </devsite-feedback> <h1 class="devsite-page-title" tabindex="-1"> Set up protocol forwarding </h1> <devsite-feature-tooltip ack-key="AckCollectionsBookmarkTooltipDismiss" analytics-category="Site-Wide Custom Events" analytics-action-show="Callout Profile displayed" analytics-action-close="Callout Profile dismissed" analytics-label="Create Collection Callout" class="devsite-page-bookmark-tooltip nocontent" dismiss-button="true" id="devsite-collections-dropdown" dismiss-button-text="Dismiss" close-button-text="Got it"> <devsite-bookmark></devsite-bookmark> <span slot="popout-heading"> Stay organized with collections </span> <span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix "> <p>This document contains instructions to configure protocol forwarding for both internal and external protocol forwarding. Before you configure protocol forwarding, read <a href="/load-balancing/docs/protocol-forwarding">Protocol forwarding overview</a>.</p> <aside class="note"><strong>Note:</strong><span> You cannot create target instance resources using the Google Cloud console. You can only use the <a href="/sdk/gcloud/reference/compute/target-instances">Google Cloud CLI</a> or <a href="/compute/docs/reference/rest/v1/targetInstances">API</a> commands.</span></aside> <h2 id="set-up-ext-pf" data-text="Set up external protocol forwarding" tabindex="-1">Set up external protocol forwarding</h2> <p>This section shows you how to set up external protocol forwarding by using a forwarding rule to forward TCP traffic to a single target instance. There are separate instructions for IPv4-only, dual-stack, and IPv6-only traffic.</p> <p>To set up external protocol forwarding, you create a target instance that contains a single VM instance. You then create an external regional forwarding rule that forwards traffic to the target instance.</p> <h3 id="ext-pf-ipv4-only" data-text="IPv4 only" tabindex="-1">IPv4 only</h3> <p>For simplicity, this example uses the default network and subnets.</p> <ol> <li><p>Create a firewall rule that allows external traffic to reach the target instance.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create <var translate="no">ALLOW_IPV4_FIREWALL_RULE_NAME</var> \ --target-tags=allow-ipv4-ext \ --allow=tcp:80 \ --source-ranges=0.0.0.0/0 </pre></devsite-code></li> <li><p>Create a VM. For this example, you set up an Apache server on the VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instances create <var translate="no">VM_INSTANCE_NAME</var> \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ipv4-ext \ --metadata=startup-script='#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo a2ensite default-ssl sudo a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://169.254.169.254/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html sudo systemctl restart apache2' </pre></devsite-code></li> <li><p>Create a target instance that contains the VM created in the previous step. You must create a target instance before you can create a forwarding rule object because the forwarding rule must reference an existing target resource.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-instances create <var translate="no">TARGET_INSTANCE_NAME</var> \ --instance=<var translate="no">VM_INSTANCE_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Reserve a <a href="/sdk/gcloud/reference/compute/addresses/create">static external IPv4 address</a>.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute addresses create <var translate="no">IPV4_ADDRESS</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Create the forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=EXTERNAL \ --region=<var translate="no">REGION</var> \ --ip-protocol=TCP \ --address=<var translate="no">IPV4_ADDRESS</var> \ --ports=80 \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Test your setup.</p> <ol> <li><p>Get the IP address of your forwarding rule.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules describe <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Make web requests to the load balancer by using curl to contact its IP address. Replace <code translate="no" dir="ltr"><var translate="no">IP_ADDRESS</var></code> with the IP address from the previous step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> while true; do curl -m1 <var translate="no">IP_ADDRESS</var>; done </pre></devsite-code> <p>The output is similar to the following, where the name of the backend VM generating the response is displayed.</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> Page served from: <var translate="no">VM_INSTANCE_NAME</var>. </pre></devsite-code></li> </ol></li> </ol> <h3 id="ext-pf-dual-stack" data-text="Dual-stack" tabindex="-1">Dual-stack</h3> <p>Handling both IPv4 and IPv6 traffic requires a dual-stack subnet with a dual-stack VM instance for the target instance backend.</p> <ol> <li><p>Create a custom mode VPC network.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute networks create <var translate="no">VPC_NAME</var> \ --subnet-mode=custom </pre></devsite-code></li> <li><p>Within the VPC network, create a dual-stack subnet.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute networks subnets create <var translate="no">SUBNET_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --range=<var translate="no">IPV4_ADDRESS_RANGE</var> \ --stack-type=IPV4_IPV6 \ --ipv6-access-type=EXTERNAL \ --region=<var translate="no">REGION</var> </pre></devsite-code> <p>For <var translate="no">IPV4_ADDRESS_RANGE</var>, you can enter any primary IPv4 range for the new subnet, in CIDR notation. For example, <code translate="no" dir="ltr">192.168.11.0/24</code>. For more information, see <a href="/vpc/docs/vpc#manually_created_subnet_ip_ranges">IPv4 subnet ranges</a>.</p></li> <li><p>Create a firewall rule that allows external traffic to reach the target instance.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create <var translate="no">ALLOW_IPV6_FIREWALL_RULE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --target-tags=allow-ipv6-ext \ --allow=tcp:80 \ --source-ranges=::/0 </pre></devsite-code></li> <li><p>Create a dual-stack VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instances create <var translate="no">VM_INSTANCE_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --stack-type=IPV4_IPV6 \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ipv6-ext \ --metadata=startup-script='#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo a2ensite default-ssl sudo a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://metadata.google.internal/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html sudo systemctl restart apache2' </pre></devsite-code></li> <li><p>Create a target instance that contains the VM created in the previous step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-instances create <var translate="no">TARGET_INSTANCE_NAME</var> \ --instance=<var translate="no">VM_INSTANCE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Reserve a <a href="/sdk/gcloud/reference/compute/addresses/create">static external IPv4 address</a>.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute addresses create <var translate="no">IPV4_ADDRESS</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Create an IPv4 forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=EXTERNAL \ --region=<var translate="no">REGION</var> \ --ip-protocol=TCP \ --address=<var translate="no">IPV4_ADDRESS</var> \ --ports=80 \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Reserve a <a href="/sdk/gcloud/reference/compute/addresses/create">static external IPv6 address range</a>.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute addresses create <var translate="no">IPV6_ADDRESS</var> \ --region=<var translate="no">REGION</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --ip-version=IPV6 \ --endpoint-type=NETLB </pre></devsite-code></li> <li><p>Create an IPv6 forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=EXTERNAL \ --subnet=<var translate="no">SUBNET_NAME</var> \ --ip-version=IPV6 \ --region=<var translate="no">REGION</var> \ --address=<var translate="no">IPV6_ADDRESS</var> \ --network-tier=PREMIUM \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> \ --ip-protocol=TCP \ --ports=80 </pre></devsite-code></li> <li><p>Test your setup.</p> <ol> <li><p>Get the IP address of the forwarding rules.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules describe <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules describe <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Make web requests to the load balancer by using curl to contact its IP address. Replace <code translate="no" dir="ltr"><var translate="no">IP_ADDRESS</var></code> with the IP address from the previous step.</p> <p>For IPv4 traffic:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> while true; do curl -m1 <var translate="no">IP_ADDRESS</var>; done </pre></devsite-code> <p>For IPv6 traffic:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> curl -6 'http://[<var translate="no">IP_ADDRESS</var>]:80' </pre></devsite-code> <p>The output is similar to the following, where the name of the backend VM generating the response is displayed.</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> Page served from: <var translate="no">VM_INSTANCE_NAME</var>. </pre></devsite-code></li> </ol></li> </ol> <h3 id="ext-pf-ipv6-only" data-text="IPv6 only" tabindex="-1">IPv6 only</h3> <aside class="beta"> <p> <strong> Preview </strong> </p> <p> This product or feature is subject to the "Pre-GA Offerings Terms" in the General Service Terms section of the <a href="/terms/service-terms#1" track-type="commonIncludes">Service Specific Terms</a>. Pre-GA products and features are available "as is" and might have limited support. For more information, see the <a href="/products#product-launch-stages" track-type="commonIncludes">launch stage descriptions</a>. </p> </aside> <p>Handling only IPv6 traffic requires an IPv6-only subnet with an IPv6-only VM instance for the target instance backend.</p> <ol> <li><p>Create a custom mode VPC network.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute networks create <var translate="no">VPC_NAME</var> \ --subnet-mode=custom </pre></devsite-code></li> <li><p>Within the VPC network, create an IPv6-only subnet.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute networks subnets create <var translate="no">SUBNET_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --stack-type=IPV6_ONLY \ --ipv6-access-type=EXTERNAL \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Create a firewall rule that allows external traffic to reach the target instance.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute firewall-rules create <var translate="no">ALLOW_IPV6_FIREWALL_RULE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --target-tags=allow-ipv6-ext \ --allow=tcp:80 \ --source-ranges=::/0 </pre></devsite-code></li> <li><p>Create an IPv6-only VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute instances create <var translate="no">VM_INSTANCE_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --stack-type=IPV6_ONLY \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ipv6-ext \ --metadata=startup-script='#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo a2ensite default-ssl sudo a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://metadata.google.internal/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html sudo systemctl restart apache2' </pre></devsite-code></li> <li><p>Create a target instance that contains the VM created in the previous step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute target-instances create <var translate="no">TARGET_INSTANCE_NAME</var> \ --instance=<var translate="no">VM_INSTANCE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Reserve a <a href="/sdk/gcloud/reference/compute/addresses/create">static external IPv6 address range</a>.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute addresses create <var translate="no">IPV6_ADDRESS</var> \ --region=<var translate="no">REGION</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --ip-version=IPV6 \ --endpoint-type=NETLB </pre></devsite-code></li> <li><p>Create an IPv6 forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute forwarding-rules create <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=EXTERNAL \ --subnet=<var translate="no">SUBNET_NAME</var> \ --ip-version=IPV6 \ --region=<var translate="no">REGION</var> \ --address=<var translate="no">IPV6_ADDRESS</var> \ --network-tier=PREMIUM \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> \ --ip-protocol=TCP \ --ports=80 </pre></devsite-code></li> <li><p>Test your setup.</p> <ol> <li><p>Get the IP address of the forwarding rule.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute forwarding-rules describe <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Make web requests to the load balancer by using curl to contact its IP address. Replace <code translate="no" dir="ltr"><var translate="no">IPV6_ADDRESS</var></code> with the IP address from the previous step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> curl -6 'http://[<var translate="no">IPV6_ADDRESS</var>]:80' </pre></devsite-code> <p>The output is similar to the following, where the name of the backend VM generating the response is displayed.</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> Page served from: <var translate="no">VM_INSTANCE_NAME</var>. </pre></devsite-code></li> </ol></li> </ol> <h2 id="set-up-int-pf" data-text="Set up internal protocol forwarding" tabindex="-1">Set up internal protocol forwarding</h2> <p>This section shows you how to set up internal protocol forwarding by using a forwarding rule to forward TCP traffic to a single target instance. There are separate instructions for IPv4-only, dual-stack, and IPv6-only traffic.</p> <p>For this example, you create a target instance that contains a single VM instance with an Apache server installed on it. You then create an internal regional forwarding rule that forwards traffic to the target instance.</p> <h3 id="int-pf-ipv4-only" data-text="IPv4 only" tabindex="-1">IPv4 only</h3> <p>For simplicity, this example uses the default network and subnets to set up internal protocol forwarding.</p> <ol> <li><p>Create a firewall rule that allows internal traffic to reach the target instance.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create <var translate="no">ALLOW_IPV4_FIREWALL_RULE_NAME</var> \ --target-tags=allow-ipv4-int \ --allow=tcp \ --source-ranges=0.0.0.0/0 </pre></devsite-code></li> <li><p>Create a firewall rule to allow SSH connectivity to VMs with the network tag <code translate="no" dir="ltr">allow-ssh</code>. This is used to establish an SSH connection to the client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create <var translate="no">ALLOW_SSH_FIREWALL_RULE_NAME</var> \ --target-tags=allow-ssh \ --allow=tcp:22 \ --source-ranges=0.0.0.0/0 </pre></devsite-code></li> <li><p>Create a VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instances create <var translate="no">VM_INSTANCE_NAME</var> \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ipv4-int \ --metadata=startup-script='#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo a2ensite default-ssl sudo a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://169.254.169.254/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html sudo systemctl restart apache2' </pre></devsite-code></li> <li><p>Create a target instance that contains the VM created in the previous step. You must create a target instance before you can create a forwarding rule object because the forwarding rule must reference an existing target resource.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-instances create <var translate="no">TARGET_INSTANCE_NAME</var> \ --instance=<var translate="no">VM_INSTANCE_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Create the forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=INTERNAL \ --network-tier=PREMIUM \ --region=<var translate="no">REGION</var> \ --ip-protocol=TCP \ --ports=80 \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Create a test client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instances create <var translate="no">CLIENT_VM_NAME</var> \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ssh </pre></devsite-code> <p>You can now test your protocol forwarding configuration by sending traffic from this client VM to the forwarding rule IP address.</p></li> <li><p>Test your setup.</p> <ol> <li><p>Get the IP address of your forwarding rule.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules describe <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Establish an SSH connection to the client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute ssh <var translate="no">CLIENT_VM_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Make requests to the load balancer by using curl to contact its IP address.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> while true; do curl -m1 <var translate="no">IP_ADDRESS</var>; done </pre></devsite-code> <p>The output is similar to the following, where the name of the backend VM generating the response is displayed.</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> Page served from: <var translate="no">VM_INSTANCE_NAME</var>. </pre></devsite-code></li> </ol></li> </ol> <h3 id="int-pf-dual-stack" data-text="Dual-stack" tabindex="-1">Dual-stack</h3> <p>Handling both IPv4 and IPv6 traffic requires a dual-stack subnet with a dual-stack VM instance for the target instance backend.</p> <ol> <li><p>Create a custom mode VPC network with the <code translate="no" dir="ltr">--enable-ula-internal-ipv6</code> flag to configure internal IPv6 ranges on any subnets in this network.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute networks create <var translate="no">VPC_NAME</var> \ --subnet-mode=custom \ --enable-ula-internal-ipv6 </pre></devsite-code></li> <li><p>Within the VPC network, create a dual-stack subnet.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute networks subnets create <var translate="no">SUBNET_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --range=<var translate="no">IPV4_ADDRESS_RANGE</var> \ --region=<var translate="no">REGION</var> \ --stack-type=IPV4_IPV6 \ --ipv6-access-type=INTERNAL </pre></devsite-code> <p>For <var translate="no">IPV4_ADDRESS_RANGE</var>, you can enter any primary IPv4 range for the new subnet, in CIDR notation. For example, <code translate="no" dir="ltr">192.168.11.0/24</code>. For more information, see <a href="/vpc/docs/vpc#manually_created_subnet_ip_ranges">IPv4 subnet ranges</a>.</p></li> <li><p>Create a firewall rule that allows internal traffic to reach the target instance.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create <var translate="no">ALLOW_IPV6_FIREWALL_RULE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --target-tags=allow-ipv6-int \ --allow=tcp \ --source-ranges=::/0 </pre></devsite-code></li> <li><p>Create a firewall rule to allow SSH connectivity to VMs by using the network tag <code translate="no" dir="ltr">allow-ssh</code>.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create <var translate="no">ALLOW_SSH_FIREWALL_RULE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --target-tags=allow-ssh \ --allow=tcp:22 \ --source-ranges=0.0.0.0/0 </pre></devsite-code> <p>This firewall rule is applied to a client VM (created in one of the following steps) that you connect to by using SSH to send HTTP traffic to the IP address of the forwarding rule.</p></li> <li><p>Create a dual-stack VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instances create <var translate="no">VM_INSTANCE_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --stack-type=IPV4_IPV6 \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ipv6-int \ --metadata=startup-script='#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo a2ensite default-ssl sudo a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://metadata.google.internal/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html sudo systemctl restart apache2' </pre></devsite-code></li> <li><p>Create a target instance that contains the VM created in the previous step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-instances create <var translate="no">TARGET_INSTANCE_NAME</var> \ --instance=<var translate="no">VM_INSTANCE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Create an IPv4 forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=INTERNAL \ --network-tier=PREMIUM \ --region=<var translate="no">REGION</var> \ --ip-protocol=TCP \ --ports=80 \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Create an IPv6 forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=INTERNAL \ --network-tier=PREMIUM \ --network=<var translate="no">VPC_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --region=<var translate="no">REGION</var> \ --ip-protocol=TCP \ --ports=80 \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> \ --ip-version=IPV6 </pre></devsite-code></li> <li><p>Create a client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instances create <var translate="no">CLIENT_VM_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --stack-type=IPV4_IPV6 \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ssh </pre></devsite-code></li> <li><p>Test your setup.</p> <ol> <li><p>Get the IP address of the forwarding rule.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules describe <var translate="no">IPV4_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules describe <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Establish an SSH connection to the client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute ssh <var translate="no">CLIENT_VM_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Make an HTTP request to the IP address of the forwarding rule by using curl.</p> <p>For IPv4 traffic:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> while true; do curl -m1 <var translate="no">IP_ADDRESS</var>; done </pre></devsite-code> <p>For IPv6 traffic:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> curl -6 'http://[<var translate="no">FORWARDING_RULE_IP_ADDRESS</var>]:80' </pre></devsite-code> <p>The output is similar to the following, where the name of the backend VM generating the response is displayed in the text.</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> Page served from: <var translate="no">VM_INSTANCE_NAME</var>. </pre></devsite-code></li> </ol></li> </ol> <h3 id="int-pf-ipv6-only" data-text="IPv6 only" tabindex="-1">IPv6 only</h3> <aside class="beta"> <p> <strong> Preview </strong> </p> <p> This product or feature is subject to the "Pre-GA Offerings Terms" in the General Service Terms section of the <a href="/terms/service-terms#1" track-type="commonIncludes">Service Specific Terms</a>. Pre-GA products and features are available "as is" and might have limited support. For more information, see the <a href="/products#product-launch-stages" track-type="commonIncludes">launch stage descriptions</a>. </p> </aside> <p>Handling only IPv6 traffic requires an IPv6-only subnet with an IPv6-only VM instance for the target instance backend.</p> <ol> <li><p>Create a custom mode VPC network with the <code translate="no" dir="ltr">--enable-ula-internal-ipv6</code> flag to configure internal IPv6 ranges on any subnets in this network.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute networks create <var translate="no">VPC_NAME</var> \ --subnet-mode=custom \ --enable-ula-internal-ipv6 </pre></devsite-code></li> <li><p>Within the VPC network, create an IPv6-only subnet.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute networks subnets create <var translate="no">SUBNET_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --region=<var translate="no">REGION</var> \ --stack-type=IPV6_ONLY \ --ipv6-access-type=INTERNAL </pre></devsite-code></li> <li><p>Create a firewall rule that allows internal traffic to reach the target instance.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute firewall-rules create <var translate="no">ALLOW_IPV6_FIREWALL_RULE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --target-tags=allow-ipv6-int \ --allow=tcp \ --source-ranges=::/0 </pre></devsite-code></li> <li><p>Create a firewall rule to allow SSH connectivity to VMs by using the network tag <code translate="no" dir="ltr">allow-ssh</code>.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute firewall-rules create <var translate="no">ALLOW_SSH_FIREWALL_RULE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --target-tags=allow-ssh \ --allow=tcp:22 \ --source-ranges=0.0.0.0/0 </pre></devsite-code> <p>This firewall rule is applied to a client VM (created in one of the following steps) that you connect to by using SSH to send HTTP traffic to the IP address of the forwarding rule.</p></li> <li><p>Create an IPv6-only VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute instances create <var translate="no">VM_INSTANCE_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --stack-type=IPV6_ONLY \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ipv6-int \ --metadata=startup-script='#! /bin/bash sudo apt-get update sudo apt-get install apache2 -y sudo a2ensite default-ssl sudo a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://metadata.google.internal/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html sudo systemctl restart apache2' </pre></devsite-code></li> <li><p>Create a target instance that contains the VM created in the previous step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute target-instances create <var translate="no">TARGET_INSTANCE_NAME</var> \ --instance=<var translate="no">VM_INSTANCE_NAME</var> \ --network=<var translate="no">VPC_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Create an IPv6 forwarding rule that forwards TCP traffic to the target instance. The forwarding rule must be created in the same region in which the target instance was created.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute forwarding-rules create <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --load-balancing-scheme=INTERNAL \ --network-tier=PREMIUM \ --network=<var translate="no">VPC_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --region=<var translate="no">REGION</var> \ --ip-protocol=TCP \ --ports=80 \ --target-instance=<var translate="no">TARGET_INSTANCE_NAME</var> \ --target-instance-zone=<var translate="no">ZONE</var> \ --ip-version=IPV6 </pre></devsite-code></li> <li><p>Create a client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute instances create <var translate="no">CLIENT_VM_NAME</var> \ --subnet=<var translate="no">SUBNET_NAME</var> \ --stack-type=IPV6_ONLY \ --zone=<var translate="no">ZONE</var> \ --image-family=debian-12 \ --image-project=debian-cloud \ --tags=allow-ssh </pre></devsite-code></li> <li><p>Test your setup.</p> <ol> <li><p>Get the IP address of the forwarding rule.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute forwarding-rules describe <var translate="no">IPV6_FORWARDING_RULE_NAME</var> \ --region=<var translate="no">REGION</var> </pre></devsite-code></li> <li><p>Establish an SSH connection to the client VM.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute ssh <var translate="no">CLIENT_VM_NAME</var> \ --zone=<var translate="no">ZONE</var> </pre></devsite-code></li> <li><p>Make an HTTP request to the IP address of the forwarding rule by using curl.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> curl -6 'http://[<var translate="no">FORWARDING_RULE_IP_ADDRESS</var>]:80' </pre></devsite-code> <p>The output is similar to the following, where the name of the backend VM generating the response is displayed in the text.</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> Page served from: <var translate="no">VM_INSTANCE_NAME</var>. </pre></devsite-code></li> </ol></li> </ol> <h2 id="whats_next" data-text="What's next" tabindex="-1">What's next</h2> <ul> <li><a href="/load-balancing/docs/org-policy-constraints#restrict_protocol_forwarding_types">Restrict protocol forwarding types</a></li> </ul> <devsite-hats-survey class="nocontent" hats-id="Nd7nTix2o0eU5NUYprb0ThtUc5jf" listnr-id="83405"></devsite-hats-survey> </div> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-feedback position="footer" project-name="Load Balancing" product-id="5173945" bucket="Documentation" context="" version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="footer" class="nocontent" project-icon="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/cloud/images/favicons/onecloud/super_cloud.png" > <button> Send feedback </button> </devsite-feedback> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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