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2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Solutions <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 d-lg-flex flex-wrap dropdown-menu-wide"> <div class="HeaderMenu-column px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0 pb-lg-3 mb-3 mb-lg-0"> <span class="d-block h4 color-fg-default my-1" id="solutions-by-company-size-heading">By company size</span> <ul class="list-style-none f5" aria-labelledby="solutions-by-company-size-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"enterprises","context":"solutions","tag":"link","label":"enterprises_link_solutions_navbar"}" href="https://github.com/enterprise"> Enterprises </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"small_and_medium_teams","context":"solutions","tag":"link","label":"small_and_medium_teams_link_solutions_navbar"}" href="https://github.com/team"> Small and medium teams </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"startups","context":"solutions","tag":"link","label":"startups_link_solutions_navbar"}" href="https://github.com/enterprise/startups"> Startups </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"nonprofits","context":"solutions","tag":"link","label":"nonprofits_link_solutions_navbar"}" href="/solutions/industry/nonprofits"> Nonprofits 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data-analytics-event="{"location":"navbar","action":"ci_cd","context":"solutions","tag":"link","label":"ci_cd_link_solutions_navbar"}" href="/solutions/use-case/ci-cd"> CI/CD </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"view_all_use_cases","context":"solutions","tag":"link","label":"view_all_use_cases_link_solutions_navbar"}" href="/solutions/use-case"> View all use cases </a></li> </ul> </div> </div> <div class="HeaderMenu-column px-lg-4"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="solutions-by-industry-heading">By industry</span> <ul class="list-style-none f5" aria-labelledby="solutions-by-industry-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" 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d-lg-flex flex-wrap dropdown-menu-wide"> <div class="HeaderMenu-column px-lg-4 border-lg-right mb-4 mb-lg-0 pr-lg-7"> <div class="border-bottom pb-3 pb-lg-0 border-lg-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="resources-topics-heading">Topics</span> <ul class="list-style-none f5" aria-labelledby="resources-topics-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"ai","context":"resources","tag":"link","label":"ai_link_resources_navbar"}" href="/resources/articles/ai"> AI </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"devops","context":"resources","tag":"link","label":"devops_link_resources_navbar"}" href="/resources/articles/devops"> DevOps </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 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1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary Link--external" target="_blank" data-analytics-event="{"location":"navbar","action":"events_amp_webinars","context":"resources","tag":"link","label":"events_amp_webinars_link_resources_navbar"}" href="https://resources.github.com"> Events & Webinars <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link-external HeaderMenu-external-icon color-fg-subtle"> <path d="M3.75 2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"ebooks_amp_whitepapers","context":"resources","tag":"link","label":"ebooks_amp_whitepapers_link_resources_navbar"}" href="https://github.com/resources/whitepapers"> Ebooks & Whitepapers </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"customer_stories","context":"resources","tag":"link","label":"customer_stories_link_resources_navbar"}" href="https://github.com/customer-stories"> Customer Stories </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary Link--external" target="_blank" data-analytics-event="{"location":"navbar","action":"partners","context":"resources","tag":"link","label":"partners_link_resources_navbar"}" href="https://partner.github.com"> Partners <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link-external HeaderMenu-external-icon color-fg-subtle"> <path d="M3.75 2h3.5a.75.75 0 0 1 0 1.5h-3.5a.25.25 0 0 0-.25.25v8.5c0 .138.112.25.25.25h8.5a.25.25 0 0 0 .25-.25v-3.5a.75.75 0 0 1 1.5 0v3.5A1.75 1.75 0 0 1 12.25 14h-8.5A1.75 1.75 0 0 1 2 12.25v-8.5C2 2.784 2.784 2 3.75 2Zm6.854-1h4.146a.25.25 0 0 1 .25.25v4.146a.25.25 0 0 1-.427.177L13.03 4.03 9.28 7.78a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042l3.75-3.75-1.543-1.543A.25.25 0 0 1 10.604 1Z"></path> </svg> </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"executive_insights","context":"resources","tag":"link","label":"executive_insights_link_resources_navbar"}" href="https://github.com/solutions/executive-insights"> Executive Insights </a></li> </ul> </div> </div> </div> </li> <li class="HeaderMenu-item position-relative flex-wrap flex-justify-between flex-items-center d-block d-lg-flex flex-lg-nowrap flex-lg-items-center js-details-container js-header-menu-item"> <button type="button" class="HeaderMenu-link border-0 width-full width-lg-auto px-0 px-lg-2 py-lg-2 no-wrap d-flex flex-items-center flex-justify-between js-details-target" aria-expanded="false"> Open Source <svg opacity="0.5" aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-chevron-down HeaderMenu-icon ml-1"> <path d="M12.78 5.22a.749.749 0 0 1 0 1.06l-4.25 4.25a.749.749 0 0 1-1.06 0L3.22 6.28a.749.749 0 1 1 1.06-1.06L8 8.939l3.72-3.719a.749.749 0 0 1 1.06 0Z"></path> </svg> </button> <div class="HeaderMenu-dropdown dropdown-menu rounded m-0 p-0 pt-2 pt-lg-4 position-relative position-lg-absolute left-0 left-lg-n3 pb-2 pb-lg-4 px-lg-4"> <div class="HeaderMenu-column"> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"github_sponsors","context":"open_source","tag":"link","label":"github_sponsors_link_open_source_navbar"}" href="/sponsors"> <div> <div class="color-fg-default h4">GitHub Sponsors</div> Fund open source developers </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 pb-lg-3 mb-3 mb-lg-0 mb-lg-3"> <ul class="list-style-none f5" > <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary d-flex flex-items-center Link--has-description" data-analytics-event="{"location":"navbar","action":"the_readme_project","context":"open_source","tag":"link","label":"the_readme_project_link_open_source_navbar"}" href="https://github.com/readme"> <div> <div class="color-fg-default h4">The ReadME Project</div> GitHub community articles </div> </a></li> </ul> </div> <div class="border-bottom pb-3 pb-lg-0 border-bottom-0"> <span class="d-block h4 color-fg-default my-1" id="open-source-repositories-heading">Repositories</span> <ul class="list-style-none f5" aria-labelledby="open-source-repositories-heading"> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" data-analytics-event="{"location":"navbar","action":"topics","context":"open_source","tag":"link","label":"topics_link_open_source_navbar"}" href="https://github.com/topics"> Topics </a></li> <li> <a class="HeaderMenu-dropdown-link d-block no-underline position-relative py-2 Link--secondary" 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data-action=" combobox-commit:query-builder#comboboxCommit mousedown:query-builder#resultsMousedown " data-target="query-builder.resultsList" data-persist-list=false id="query-builder-test-results" ></ul> </div> <div class="FormControl-inlineValidation" id="validation-8cf35310-fa16-4dae-8004-e63b855826ca" hidden="hidden"> <span class="FormControl-inlineValidation--visual"> <svg aria-hidden="true" height="12" viewBox="0 0 12 12" version="1.1" width="12" data-view-component="true" class="octicon octicon-alert-fill"> <path d="M4.855.708c.5-.896 1.79-.896 2.29 0l4.675 8.351a1.312 1.312 0 0 1-1.146 1.954H1.33A1.313 1.313 0 0 1 .183 9.058ZM7 7V3H5v4Zm-1 3a1 1 0 1 0 0-2 1 1 0 0 0 0 2Z"></path> </svg> </span> <span></span> </div> </div> <div data-target="query-builder.screenReaderFeedback" aria-live="polite" aria-atomic="true" class="sr-only"></div> </query-builder></form> <div class="d-flex flex-row color-fg-muted px-3 text-small color-bg-default search-feedback-prompt"> <a target="_blank" href="https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax" data-view-component="true" class="Link color-fg-accent text-normal ml-2">Search syntax tips</a> <div class="d-flex flex-1"></div> </div> </div> </div> </div> </modal-dialog></div> </div> <div data-action="click:qbsearch-input#retract" class="dark-backdrop position-fixed" hidden data-target="qbsearch-input.darkBackdrop"></div> <div class="color-fg-default"> <dialog-helper> <dialog data-target="qbsearch-input.feedbackDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="feedback-dialog" aria-modal="true" aria-labelledby="feedback-dialog-title" aria-describedby="feedback-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header"> <div class="Overlay-headerContentWrap"> <div 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method="post"><input type="hidden" data-csrf="true" name="authenticity_token" value="0a17Ys5zVVaW6/0DCG/5DS02RAg0zQCJ+rsu8RNWYjXMqqcYPHGHUNQAgI7tI2cxuwCgshPqJx0rhCDRTiGtaw==" /> <p>We read every piece of feedback, and take your input very seriously.</p> <textarea name="feedback" class="form-control width-full mb-2" style="height: 120px" id="feedback"></textarea> <input name="include_email" id="include_email" aria-label="Include my email address so I can be contacted" class="form-control mr-2" type="checkbox"> <label for="include_email" style="font-weight: normal">Include my email address so I can be contacted</label> </form></div> </scrollable-region> <div data-view-component="true" class="Overlay-footer Overlay-footer--alignEnd"> <button data-close-dialog-id="feedback-dialog" type="button" data-view-component="true" class="btn"> Cancel </button> <button form="code-search-feedback-form" data-action="click:qbsearch-input#submitFeedback" type="submit" data-view-component="true" class="btn-primary btn"> Submit feedback </button> </div> </dialog></dialog-helper> <custom-scopes data-target="qbsearch-input.customScopesManager"> <dialog-helper> <dialog data-target="custom-scopes.customScopesModalDialog" data-action="close:qbsearch-input#handleDialogClose cancel:qbsearch-input#handleDialogClose" id="custom-scopes-dialog" aria-modal="true" aria-labelledby="custom-scopes-dialog-title" aria-describedby="custom-scopes-dialog-description" data-view-component="true" class="Overlay Overlay-whenNarrow Overlay--size-medium Overlay--motion-scaleFade Overlay--disableScroll"> <div data-view-component="true" class="Overlay-header Overlay-header--divided"> <div class="Overlay-headerContentWrap"> <div class="Overlay-titleWrap"> <h1 class="Overlay-title " id="custom-scopes-dialog-title"> Saved searches </h1> <h2 id="custom-scopes-dialog-description" class="Overlay-description">Use saved searches to filter your results more quickly</h2> </div> <div class="Overlay-actionWrap"> 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with IPsec/L2TP, Cisco IPsec and IKEv2 </p> <div class="mb-2 d-flex flex-items-center Link--secondary"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link flex-shrink-0 mr-2"> <path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path> </svg> <span class="flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a title="https://hub.docker.com/r/hwdsl2/ipsec-vpn-server" role="link" target="_blank" class="text-bold" 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href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/README.md\"\u003eEnglish\u003c/a\u003e | \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/README-zh.md\"\u003e中文\u003c/a\u003e\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch1 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eIPsec VPN Server on Docker\u003c/h1\u003e\u003ca id=\"user-content-ipsec-vpn-server-on-docker\" class=\"anchor\" aria-label=\"Permalink: IPsec VPN Server on Docker\" href=\"#ipsec-vpn-server-on-docker\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"https://github.com/hwdsl2/docker-ipsec-vpn-server/actions/workflows/main-alpine.yml\"\u003e\u003cimg src=\"https://github.com/hwdsl2/docker-ipsec-vpn-server/actions/workflows/main-alpine.yml/badge.svg\" alt=\"Build Status\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e \u003ca href=\"https://github.com/hwdsl2/docker-ipsec-vpn-server/stargazers\"\u003e\u003cimg src=\"/hwdsl2/docker-ipsec-vpn-server/raw/master/docs/images/badges/github-stars.svg\" alt=\"GitHub Stars\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e \u003ca href=\"https://hub.docker.com/r/hwdsl2/ipsec-vpn-server/\" rel=\"nofollow\"\u003e\u003cimg src=\"/hwdsl2/docker-ipsec-vpn-server/raw/master/docs/images/badges/docker-stars.svg\" alt=\"Docker Stars\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e \u003ca href=\"https://hub.docker.com/r/hwdsl2/ipsec-vpn-server/\" rel=\"nofollow\"\u003e\u003cimg src=\"/hwdsl2/docker-ipsec-vpn-server/raw/master/docs/images/badges/docker-pulls.svg\" alt=\"Docker Pulls\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eDocker image to run an IPsec VPN server, with IPsec/L2TP, Cisco IPsec and IKEv2.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eBased on Alpine 3.21 or Debian 12 with \u003ca href=\"https://libreswan.org\" rel=\"nofollow\"\u003eLibreswan\u003c/a\u003e (IPsec VPN software) and \u003ca href=\"https://github.com/xelerance/xl2tpd\"\u003exl2tpd\u003c/a\u003e (L2TP daemon).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAn IPsec VPN encrypts your network traffic, so that nobody between you and the VPN server can eavesdrop on your data as it travels via the Internet. This is especially useful when using unsecured networks, e.g. at coffee shops, airports or hotel rooms.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/vpn-book.md\"\u003e» 📖 Book: Build Your Own VPN Server\u003c/a\u003e\u003c/strong\u003e [\u003ca href=\"https://books2read.com/vpnguide?store=amazon\" rel=\"nofollow\"\u003eEnglish\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguidezh\" rel=\"nofollow\"\u003e中文\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguidees?store=amazon\" rel=\"nofollow\"\u003eEspañol\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguidede?store=amazon\" rel=\"nofollow\"\u003eDeutsch\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguidefr?store=amazon\" rel=\"nofollow\"\u003eFrançais\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguideit?store=amazon\" rel=\"nofollow\"\u003eItaliano\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguidenl?store=amazon\" rel=\"nofollow\"\u003eNL\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguidept?store=amazon\" rel=\"nofollow\"\u003ePT\u003c/a\u003e | \u003ca href=\"https://books2read.com/vpnguideja?store=amazon\" rel=\"nofollow\"\u003e日本語\u003c/a\u003e]\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eQuick start\u003c/h2\u003e\u003ca id=\"user-content-quick-start\" class=\"anchor\" aria-label=\"Permalink: Quick start\" href=\"#quick-start\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eUse this command to set up an IPsec VPN server on Docker:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker run \\\n --name ipsec-vpn-server \\\n --restart=always \\\n -v ikev2-vpn-data:/etc/ipsec.d \\\n -v /lib/modules:/lib/modules:ro \\\n -p 500:500/udp \\\n -p 4500:4500/udp \\\n -d --privileged \\\n hwdsl2/ipsec-vpn-server\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker run \\\n --name ipsec-vpn-server \\\n --restart=always \\\n -v ikev2-vpn-data:/etc/ipsec.d \\\n -v /lib/modules:/lib/modules:ro \\\n -p 500:500/udp \\\n -p 4500:4500/udp \\\n -d --privileged \\\n hwdsl2/ipsec-vpn-server\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYour VPN login details will be randomly generated. See \u003ca href=\"#retrieve-vpn-login-details\"\u003eRetrieve VPN login details\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAlternatively, you may \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn\"\u003eset up IPsec VPN without Docker\u003c/a\u003e. To learn more about how to use this image, read the sections below.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eFeatures\u003c/h2\u003e\u003ca id=\"user-content-features\" class=\"anchor\" aria-label=\"Permalink: Features\" href=\"#features\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eSupports IKEv2 with strong and fast ciphers (e.g. AES-GCM)\u003c/li\u003e\n\u003cli\u003eGenerates VPN profiles to auto-configure iOS, macOS and Android devices\u003c/li\u003e\n\u003cli\u003eSupports Windows, macOS, iOS, Android, Chrome OS and Linux as VPN clients\u003c/li\u003e\n\u003cli\u003eIncludes a helper script to manage IKEv2 users and certificates\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eInstall Docker\u003c/h2\u003e\u003ca id=\"user-content-install-docker\" class=\"anchor\" aria-label=\"Permalink: Install Docker\" href=\"#install-docker\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFirst, \u003ca href=\"https://docs.docker.com/engine/install/\" rel=\"nofollow\"\u003einstall Docker\u003c/a\u003e on your Linux server. You may also use \u003ca href=\"https://podman.io\" rel=\"nofollow\"\u003ePodman\u003c/a\u003e to run this image, after \u003ca href=\"https://podman.io/whatis.html\" rel=\"nofollow\"\u003ecreating an alias\u003c/a\u003e for \u003ccode\u003edocker\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAdvanced users can use this image on macOS with \u003ca href=\"https://docs.docker.com/docker-for-mac/\" rel=\"nofollow\"\u003eDocker for Mac\u003c/a\u003e. Before using IPsec/L2TP mode, you may need to restart the Docker container once with \u003ccode\u003edocker restart ipsec-vpn-server\u003c/code\u003e. This image does not support Docker for Windows.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eDownload\u003c/h2\u003e\u003ca id=\"user-content-download\" class=\"anchor\" aria-label=\"Permalink: Download\" href=\"#download\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eGet the trusted build from the \u003ca href=\"https://hub.docker.com/r/hwdsl2/ipsec-vpn-server/\" rel=\"nofollow\"\u003eDocker Hub registry\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker pull hwdsl2/ipsec-vpn-server\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker pull hwdsl2/ipsec-vpn-server\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAlternatively, you may download from \u003ca href=\"https://quay.io/repository/hwdsl2/ipsec-vpn-server\" rel=\"nofollow\"\u003eQuay.io\u003c/a\u003e:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker pull quay.io/hwdsl2/ipsec-vpn-server\ndocker image tag quay.io/hwdsl2/ipsec-vpn-server hwdsl2/ipsec-vpn-server\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker pull quay.io/hwdsl2/ipsec-vpn-server\ndocker image tag quay.io/hwdsl2/ipsec-vpn-server hwdsl2/ipsec-vpn-server\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSupported platforms: \u003ccode\u003elinux/amd64\u003c/code\u003e, \u003ccode\u003elinux/arm64\u003c/code\u003e and \u003ccode\u003elinux/arm/v7\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAdvanced users can \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#build-from-source-code\"\u003ebuild from source code\u003c/a\u003e on GitHub.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eImage comparison\u003c/h3\u003e\u003ca id=\"user-content-image-comparison\" class=\"anchor\" aria-label=\"Permalink: Image comparison\" href=\"#image-comparison\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTwo pre-built images are available. The default Alpine-based image is only ~18 MB.\u003c/p\u003e\n\u003cmarkdown-accessiblity-table\u003e\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003c/th\u003e\n\u003cth\u003eAlpine-based\u003c/th\u003e\n\u003cth\u003eDebian-based\u003c/th\u003e\n\u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eImage name\u003c/td\u003e\n\u003ctd\u003ehwdsl2/ipsec-vpn-server\u003c/td\u003e\n\u003ctd\u003ehwdsl2/ipsec-vpn-server:debian\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompressed size\u003c/td\u003e\n\u003ctd\u003e~ 18 MB\u003c/td\u003e\n\u003ctd\u003e~ 62 MB\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase image\u003c/td\u003e\n\u003ctd\u003eAlpine Linux 3.21\u003c/td\u003e\n\u003ctd\u003eDebian Linux 12\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePlatforms\u003c/td\u003e\n\u003ctd\u003eamd64, arm64, arm/v7\u003c/td\u003e\n\u003ctd\u003eamd64, arm64, arm/v7\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLibreswan version\u003c/td\u003e\n\u003ctd\u003e5.2\u003c/td\u003e\n\u003ctd\u003e5.2\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIPsec/L2TP\u003c/td\u003e\n\u003ctd\u003e✅\u003c/td\u003e\n\u003ctd\u003e✅\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCisco IPsec\u003c/td\u003e\n\u003ctd\u003e✅\u003c/td\u003e\n\u003ctd\u003e✅\u003c/td\u003e\n\u003c/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIKEv2\u003c/td\u003e\n\u003ctd\u003e✅\u003c/td\u003e\n\u003ctd\u003e✅\u003c/td\u003e\n\u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\u003c/markdown-accessiblity-table\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e To use the Debian-based image, replace every \u003ccode\u003ehwdsl2/ipsec-vpn-server\u003c/code\u003e with \u003ccode\u003ehwdsl2/ipsec-vpn-server:debian\u003c/code\u003e in this README. These images are not currently compatible with Synology NAS systems.\u003c/p\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\nI want to use the older Libreswan version 4.\n\u003c/summary\u003e\n\u003cp dir=\"auto\"\u003eIt is generally recommended to use the latest \u003ca href=\"https://libreswan.org/\" rel=\"nofollow\"\u003eLibreswan\u003c/a\u003e version 5, which is the default version in this project. However, if you want to use the older Libreswan version 4, you can build the Docker image from source code:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"git clone https://github.com/hwdsl2/docker-ipsec-vpn-server\ncd docker-ipsec-vpn-server\n# Specify Libreswan version 4\nsed -i 's/SWAN_VER=5\\..*/SWAN_VER=4.15/' Dockerfile Dockerfile.debian\n# To build Alpine-based image\ndocker build -t hwdsl2/ipsec-vpn-server .\n# To build Debian-based image\ndocker build -f Dockerfile.debian -t hwdsl2/ipsec-vpn-server:debian .\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003egit clone https://github.com/hwdsl2/docker-ipsec-vpn-server\ncd docker-ipsec-vpn-server\n# Specify Libreswan version 4\nsed -i 's/SWAN_VER=5\\..*/SWAN_VER=4.15/' Dockerfile Dockerfile.debian\n# To build Alpine-based image\ndocker build -t hwdsl2/ipsec-vpn-server .\n# To build Debian-based image\ndocker build -f Dockerfile.debian -t hwdsl2/ipsec-vpn-server:debian .\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003c/details\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eHow to use this image\u003c/h2\u003e\u003ca id=\"user-content-how-to-use-this-image\" class=\"anchor\" aria-label=\"Permalink: How to use this image\" href=\"#how-to-use-this-image\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eEnvironment variables\u003c/h3\u003e\u003ca id=\"user-content-environment-variables\" class=\"anchor\" aria-label=\"Permalink: Environment variables\" href=\"#environment-variables\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e All the variables to this image are optional, which means you don't have to type in any variable, and you can have an IPsec VPN server out of the box! To do that, create an empty \u003ccode\u003eenv\u003c/code\u003e file using \u003ccode\u003etouch vpn.env\u003c/code\u003e, and skip to the next section.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThis Docker image uses the following variables, that can be declared in an \u003ccode\u003eenv\u003c/code\u003e file (see \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/vpn.env.example\"\u003eexample\u003c/a\u003e):\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"VPN_IPSEC_PSK=your_ipsec_pre_shared_key\nVPN_USER=your_vpn_username\nVPN_PASSWORD=your_vpn_password\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eVPN_IPSEC_PSK=your_ipsec_pre_shared_key\nVPN_USER=your_vpn_username\nVPN_PASSWORD=your_vpn_password\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThis will create a user account for VPN login, which can be used by your multiple devices\u003ca href=\"#important-notes\"\u003e*\u003c/a\u003e. The IPsec PSK (pre-shared key) is specified by the \u003ccode\u003eVPN_IPSEC_PSK\u003c/code\u003e environment variable. The VPN username is defined in \u003ccode\u003eVPN_USER\u003c/code\u003e, and VPN password is specified by \u003ccode\u003eVPN_PASSWORD\u003c/code\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eAdditional VPN users are supported, and can be optionally declared in your \u003ccode\u003eenv\u003c/code\u003e file like this. Usernames and passwords must be separated by spaces, and usernames cannot contain duplicates. All VPN users will share the same IPsec PSK.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"VPN_ADDL_USERS=additional_username_1 additional_username_2\nVPN_ADDL_PASSWORDS=additional_password_1 additional_password_2\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eVPN_ADDL_USERS=additional_username_1 additional_username_2\nVPN_ADDL_PASSWORDS=additional_password_1 additional_password_2\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e In your \u003ccode\u003eenv\u003c/code\u003e file, DO NOT put \u003ccode\u003e\"\"\u003c/code\u003e or \u003ccode\u003e''\u003c/code\u003e around values, or add space around \u003ccode\u003e=\u003c/code\u003e. DO NOT use these special characters within values: \u003ccode\u003e\\ \" '\u003c/code\u003e. A secure IPsec PSK should consist of at least 20 random characters.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e If you modify the \u003ccode\u003eenv\u003c/code\u003e file after the Docker container is already created, you must remove and re-create the container for the changes to take effect. Refer to \u003ca href=\"#update-docker-image\"\u003eUpdate Docker image\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAdditional environment variables\u003c/h3\u003e\u003ca id=\"user-content-additional-environment-variables\" class=\"anchor\" aria-label=\"Permalink: Additional environment variables\" href=\"#additional-environment-variables\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eAdvanced users can optionally specify a DNS name, client name and/or custom DNS servers.\u003c/p\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\nLearn how to specify a DNS name, client name and/or custom DNS servers.\n\u003c/summary\u003e\n\u003cp dir=\"auto\"\u003eAdvanced users can optionally specify a DNS name for the IKEv2 server address. The DNS name must be a fully qualified domain name (FQDN). Example:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"VPN_DNS_NAME=vpn.example.com\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eVPN_DNS_NAME=vpn.example.com\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eYou may specify a name for the first IKEv2 client. Use one word only, no special characters except \u003ccode\u003e-\u003c/code\u003e and \u003ccode\u003e_\u003c/code\u003e. The default is \u003ccode\u003evpnclient\u003c/code\u003e if not specified.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"VPN_CLIENT_NAME=your_client_name\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eVPN_CLIENT_NAME=your_client_name\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eBy default, clients are set to use \u003ca href=\"https://developers.google.com/speed/public-dns/\" rel=\"nofollow\"\u003eGoogle Public DNS\u003c/a\u003e when the VPN is active. You may specify custom DNS server(s) for all VPN modes. Example:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"VPN_DNS_SRV1=1.1.1.1\nVPN_DNS_SRV2=1.0.0.1\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eVPN_DNS_SRV1=1.1.1.1\nVPN_DNS_SRV2=1.0.0.1\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eFor more details and a list of some popular public DNS providers, see \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md\"\u003eUse alternative DNS servers\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eBy default, no password is required when importing IKEv2 client configuration. You can choose to protect client config files using a random password.\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"VPN_PROTECT_CONFIG=yes\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eVPN_PROTECT_CONFIG=yes\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e The variables above have no effect for IKEv2 mode, if IKEv2 is already set up in the Docker container. In this case, you may remove IKEv2 and set it up again using custom options. Refer to \u003ca href=\"#configure-and-use-ikev2-vpn\"\u003eConfigure and use IKEv2 VPN\u003c/a\u003e.\u003c/p\u003e\n\u003c/details\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eStart the IPsec VPN server\u003c/h3\u003e\u003ca id=\"user-content-start-the-ipsec-vpn-server\" class=\"anchor\" aria-label=\"Permalink: Start the IPsec VPN server\" href=\"#start-the-ipsec-vpn-server\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eCreate a new Docker container from this image (replace \u003ccode\u003e./vpn.env\u003c/code\u003e with your own \u003ccode\u003eenv\u003c/code\u003e file):\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker run \\\n --name ipsec-vpn-server \\\n --env-file ./vpn.env \\\n --restart=always \\\n -v ikev2-vpn-data:/etc/ipsec.d \\\n -v /lib/modules:/lib/modules:ro \\\n -p 500:500/udp \\\n -p 4500:4500/udp \\\n -d --privileged \\\n hwdsl2/ipsec-vpn-server\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker run \\\n --name ipsec-vpn-server \\\n --env-file ./vpn.env \\\n --restart=always \\\n -v ikev2-vpn-data:/etc/ipsec.d \\\n -v /lib/modules:/lib/modules:ro \\\n -p 500:500/udp \\\n -p 4500:4500/udp \\\n -d --privileged \\\n hwdsl2/ipsec-vpn-server\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIn this command, we use the \u003ccode\u003e-v\u003c/code\u003e option of \u003ccode\u003edocker run\u003c/code\u003e to create a new \u003ca href=\"https://docs.docker.com/storage/volumes/\" rel=\"nofollow\"\u003eDocker volume\u003c/a\u003e named \u003ccode\u003eikev2-vpn-data\u003c/code\u003e, and mount it into \u003ccode\u003e/etc/ipsec.d\u003c/code\u003e in the container. IKEv2 related data such as certificates and keys will persist in the volume, and later when you need to re-create the Docker container, just specify the same volume again.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIt is recommended to enable IKEv2 when using this image. However, if you prefer not to enable IKEv2 and use only the IPsec/L2TP and IPsec/XAuth (\"Cisco IPsec\") modes to connect to the VPN, remove the first \u003ccode\u003e-v\u003c/code\u003e option from the \u003ccode\u003edocker run\u003c/code\u003e command above.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e Advanced users can also \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#run-without-privileged-mode\"\u003erun without privileged mode\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch3 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eRetrieve VPN login details\u003c/h3\u003e\u003ca id=\"user-content-retrieve-vpn-login-details\" class=\"anchor\" aria-label=\"Permalink: Retrieve VPN login details\" href=\"#retrieve-vpn-login-details\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf you did not specify an \u003ccode\u003eenv\u003c/code\u003e file in the \u003ccode\u003edocker run\u003c/code\u003e command above, \u003ccode\u003eVPN_USER\u003c/code\u003e will default to \u003ccode\u003evpnuser\u003c/code\u003e and both \u003ccode\u003eVPN_IPSEC_PSK\u003c/code\u003e and \u003ccode\u003eVPN_PASSWORD\u003c/code\u003e will be randomly generated. To retrieve them, view the container logs:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker logs ipsec-vpn-server\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker logs ipsec-vpn-server\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSearch for these lines in the output:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"Connect to your new VPN with these details:\n\nServer IP: your_vpn_server_ip\nIPsec PSK: your_ipsec_pre_shared_key\nUsername: your_vpn_username\nPassword: your_vpn_password\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eConnect to your new VPN with these details:\n\nServer IP: your_vpn_server_ip\nIPsec PSK: your_ipsec_pre_shared_key\nUsername: your_vpn_username\nPassword: your_vpn_password\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThe output will also include details for IKEv2 mode, if enabled.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e(Optional) Backup the generated VPN login details (if any) to the current directory:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker cp ipsec-vpn-server:/etc/ipsec.d/vpn-gen.env ./\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker cp ipsec-vpn-server:/etc/ipsec.d/vpn-gen.env ./\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eNext steps\u003c/h2\u003e\u003ca id=\"user-content-next-steps\" class=\"anchor\" aria-label=\"Permalink: Next steps\" href=\"#next-steps\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cem\u003eRead this in other languages: \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/README.md#next-steps\"\u003eEnglish\u003c/a\u003e, \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/README-zh.md#%E4%B8%8B%E4%B8%80%E6%AD%A5\"\u003e中文\u003c/a\u003e.\u003c/em\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eGet your computer or device to use the VPN. Please refer to:\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e\u003ca href=\"#configure-and-use-ikev2-vpn\"\u003eConfigure and use IKEv2 VPN (recommended)\u003c/a\u003e\u003c/strong\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e\u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md\"\u003eConfigure IPsec/L2TP VPN Clients\u003c/a\u003e\u003c/strong\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003e\u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-xauth.md\"\u003eConfigure IPsec/XAuth (\"Cisco IPsec\") VPN Clients\u003c/a\u003e\u003c/strong\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eRead \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/vpn-book.md\"\u003e📖 VPN book\u003c/a\u003e to access \u003ca href=\"https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J\" rel=\"nofollow\"\u003eextra content\u003c/a\u003e.\u003c/strong\u003e\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eEnjoy your very own VPN! ✨🎉🚀✨\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eImportant notes\u003c/h2\u003e\u003ca id=\"user-content-important-notes\" class=\"anchor\" aria-label=\"Permalink: Important notes\" href=\"#important-notes\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWindows users\u003c/strong\u003e: For IPsec/L2TP mode, a \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#windows-error-809\"\u003eone-time registry change\u003c/a\u003e is required if the VPN server or client is behind NAT (e.g. home router).\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe same VPN account can be used by your multiple devices. However, due to an IPsec/L2TP limitation, if you wish to connect multiple devices from behind the same NAT (e.g. home router), you must use \u003ca href=\"#configure-and-use-ikev2-vpn\"\u003eIKEv2\u003c/a\u003e or \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-xauth.md\"\u003eIPsec/XAuth\u003c/a\u003e mode.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eIf you wish to add, edit or remove VPN user accounts, first update your \u003ccode\u003eenv\u003c/code\u003e file, then you must remove and re-create the Docker container using instructions from the \u003ca href=\"#update-docker-image\"\u003enext section\u003c/a\u003e. Advanced users can \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bind-mount-the-env-file\"\u003ebind mount\u003c/a\u003e the \u003ccode\u003eenv\u003c/code\u003e file.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFor servers with an external firewall (e.g. \u003ca href=\"https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-security-groups.html\" rel=\"nofollow\"\u003eEC2\u003c/a\u003e/\u003ca href=\"https://cloud.google.com/vpc/docs/firewalls\" rel=\"nofollow\"\u003eGCE\u003c/a\u003e), open UDP ports 500 and 4500 for the VPN. Aliyun users, see \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/issues/433\" data-hovercard-type=\"issue\" data-hovercard-url=\"/hwdsl2/setup-ipsec-vpn/issues/433/hovercard\"\u003e#433\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eClients are set to use \u003ca href=\"https://developers.google.com/speed/public-dns/\" rel=\"nofollow\"\u003eGoogle Public DNS\u003c/a\u003e when the VPN is active. If another DNS provider is preferred, read \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#use-alternative-dns-servers\"\u003ethis section\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eUpdate Docker image\u003c/h2\u003e\u003ca id=\"user-content-update-docker-image\" class=\"anchor\" aria-label=\"Permalink: Update Docker image\" href=\"#update-docker-image\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eTo update the Docker image and container, first \u003ca href=\"#download\"\u003edownload\u003c/a\u003e the latest version:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"docker pull hwdsl2/ipsec-vpn-server\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003edocker pull hwdsl2/ipsec-vpn-server\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIf the Docker image is already up to date, you should see:\u003c/p\u003e\n\u003cdiv class=\"snippet-clipboard-content notranslate position-relative overflow-auto\" data-snippet-clipboard-copy-content=\"Status: Image is up to date for hwdsl2/ipsec-vpn-server:latest\"\u003e\u003cpre class=\"notranslate\"\u003e\u003ccode\u003eStatus: Image is up to date for hwdsl2/ipsec-vpn-server:latest\n\u003c/code\u003e\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eOtherwise, it will download the latest version. To update your Docker container, first write down all your \u003ca href=\"#retrieve-vpn-login-details\"\u003eVPN login details\u003c/a\u003e. Then remove the Docker container with \u003ccode\u003edocker rm -f ipsec-vpn-server\u003c/code\u003e. Finally, re-create it using instructions from \u003ca href=\"#how-to-use-this-image\"\u003eHow to use this image\u003c/a\u003e.\u003c/p\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eConfigure and use IKEv2 VPN\u003c/h2\u003e\u003ca id=\"user-content-configure-and-use-ikev2-vpn\" class=\"anchor\" aria-label=\"Permalink: Configure and use IKEv2 VPN\" href=\"#configure-and-use-ikev2-vpn\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eIKEv2 mode has improvements over IPsec/L2TP and IPsec/XAuth (\"Cisco IPsec\"), and does not require an IPsec PSK, username or password. Read more \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md\"\u003ehere\u003c/a\u003e.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eFirst, check container logs to view details for IKEv2:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"docker logs ipsec-vpn-server\"\u003e\u003cpre\u003edocker logs ipsec-vpn-server\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e If you cannot find IKEv2 details, IKEv2 may not be enabled in the container. Try updating the Docker image and container using instructions from the \u003ca href=\"#update-docker-image\"\u003eUpdate Docker image\u003c/a\u003e section.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eDuring IKEv2 setup, an IKEv2 client (with default name \u003ccode\u003evpnclient\u003c/code\u003e) is created, with its configuration exported to \u003ccode\u003e/etc/ipsec.d\u003c/code\u003e \u003cstrong\u003einside the container\u003c/strong\u003e. To copy config file(s) to the Docker host:\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"# Check contents of /etc/ipsec.d in the container\ndocker exec -it ipsec-vpn-server ls -l /etc/ipsec.d\n# Example: Copy a client config file from the container\n# to the current directory on the Docker host\ndocker cp ipsec-vpn-server:/etc/ipsec.d/vpnclient.p12 ./\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Check contents of /etc/ipsec.d in the container\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ls -l /etc/ipsec.d\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Example: Copy a client config file from the container\u003c/span\u003e\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e to the current directory on the Docker host\u003c/span\u003e\ndocker cp ipsec-vpn-server:/etc/ipsec.d/vpnclient.p12 ./\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNext steps:\u003c/strong\u003e \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md\"\u003eConfigure your devices\u003c/a\u003e to use the IKEv2 VPN.\u003c/p\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\nLearn how to manage IKEv2 clients.\n\u003c/summary\u003e\n\u003cp dir=\"auto\"\u003eYou can manage IKEv2 clients using the helper script. See examples below. To customize client options, run the script without arguments.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"# Add a new client (using default options)\ndocker exec -it ipsec-vpn-server ikev2.sh --addclient [client name]\n# Export configuration for an existing client\ndocker exec -it ipsec-vpn-server ikev2.sh --exportclient [client name]\n# List existing clients\ndocker exec -it ipsec-vpn-server ikev2.sh --listclients\n# Show usage\ndocker exec -it ipsec-vpn-server ikev2.sh -h\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Add a new client (using default options)\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ikev2.sh --addclient [client name]\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Export configuration for an existing client\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ikev2.sh --exportclient [client name]\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e List existing clients\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ikev2.sh --listclients\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Show usage\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ikev2.sh -h\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e If you encounter error \"executable file not found\", replace \u003ccode\u003eikev2.sh\u003c/code\u003e above with \u003ccode\u003e/opt/src/ikev2.sh\u003c/code\u003e.\u003c/p\u003e\n\u003c/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\nLearn how to change the IKEv2 server address.\n\u003c/summary\u003e\n\u003cp dir=\"auto\"\u003eIn certain circumstances, you may need to change the IKEv2 server address. For example, to switch to use a DNS name, or after server IP changes. To change the IKEv2 server address, first \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bash-shell-inside-container\"\u003eopen a bash shell inside the container\u003c/a\u003e, then \u003ca href=\"https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#change-ikev2-server-address\"\u003efollow these instructions\u003c/a\u003e. Note that the container logs will not show the new IKEv2 server address until you restart the Docker container.\u003c/p\u003e\n\u003c/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003e\nRemove IKEv2 and set it up again using custom options.\n\u003c/summary\u003e\n\u003cp dir=\"auto\"\u003eIn certain circumstances, you may need to remove IKEv2 and set it up again using custom options.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eWarning:\u003c/strong\u003e All IKEv2 configuration including certificates and keys will be \u003cstrong\u003epermanently deleted\u003c/strong\u003e. This \u003cstrong\u003ecannot be undone\u003c/strong\u003e!\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eOption 1:\u003c/strong\u003e Remove IKEv2 and set it up again using the helper script.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eNote that this will override variables you specified in the \u003ccode\u003eenv\u003c/code\u003e file, such as \u003ccode\u003eVPN_DNS_NAME\u003c/code\u003e and \u003ccode\u003eVPN_CLIENT_NAME\u003c/code\u003e, and the container logs will no longer show up-to-date information for IKEv2.\u003c/p\u003e\n\u003cdiv class=\"highlight highlight-source-shell notranslate position-relative overflow-auto\" dir=\"auto\" data-snippet-clipboard-copy-content=\"# Remove IKEv2 and delete all IKEv2 configuration\ndocker exec -it ipsec-vpn-server ikev2.sh --removeikev2\n# Set up IKEv2 again using custom options\ndocker exec -it ipsec-vpn-server ikev2.sh\"\u003e\u003cpre\u003e\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Remove IKEv2 and delete all IKEv2 configuration\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ikev2.sh --removeikev2\n\u003cspan class=\"pl-c\"\u003e\u003cspan class=\"pl-c\"\u003e#\u003c/span\u003e Set up IKEv2 again using custom options\u003c/span\u003e\ndocker \u003cspan class=\"pl-c1\"\u003eexec\u003c/span\u003e -it ipsec-vpn-server ikev2.sh\u003c/pre\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eOption 2:\u003c/strong\u003e Remove \u003ccode\u003eikev2-vpn-data\u003c/code\u003e and re-create the container.\u003c/p\u003e\n\u003col dir=\"auto\"\u003e\n\u003cli\u003eWrite down all your \u003ca href=\"#retrieve-vpn-login-details\"\u003eVPN login details\u003c/a\u003e.\u003c/li\u003e\n\u003cli\u003eRemove the Docker container: \u003ccode\u003edocker rm -f ipsec-vpn-server\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eRemove the \u003ccode\u003eikev2-vpn-data\u003c/code\u003e volume: \u003ccode\u003edocker volume rm ikev2-vpn-data\u003c/code\u003e.\u003c/li\u003e\n\u003cli\u003eUpdate your \u003ccode\u003eenv\u003c/code\u003e file and add custom IKEv2 options such as \u003ccode\u003eVPN_DNS_NAME\u003c/code\u003e and \u003ccode\u003eVPN_CLIENT_NAME\u003c/code\u003e, then re-create the container. Refer to \u003ca href=\"#how-to-use-this-image\"\u003eHow to use this image\u003c/a\u003e.\u003c/li\u003e\n\u003c/ol\u003e\n\u003c/details\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eAdvanced usage\u003c/h2\u003e\u003ca id=\"user-content-advanced-usage\" class=\"anchor\" aria-label=\"Permalink: Advanced usage\" href=\"#advanced-usage\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eSee \u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md\"\u003eAdvanced usage\u003c/a\u003e.\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#use-alternative-dns-servers\"\u003eUse alternative DNS servers\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#run-without-privileged-mode\"\u003eRun without privileged mode\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#select-vpn-modes\"\u003eSelect VPN modes\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#access-other-containers-on-the-docker-host\"\u003eAccess other containers on the Docker host\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#specify-vpn-servers-public-ip\"\u003eSpecify VPN server's public IP\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#assign-static-ips-to-vpn-clients\"\u003eAssign static IPs to VPN clients\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#customize-vpn-subnets\"\u003eCustomize VPN subnets\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#split-tunneling\"\u003eSplit tunneling\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#about-host-network-mode\"\u003eAbout host network mode\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#enable-libreswan-logs\"\u003eEnable Libreswan logs\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#check-server-status\"\u003eCheck server status\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#build-from-source-code\"\u003eBuild from source code\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bash-shell-inside-container\"\u003eBash shell inside container\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bind-mount-the-env-file\"\u003eBind mount the env file\u003c/a\u003e\u003c/li\u003e\n\u003cli\u003e\u003ca href=\"/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#deploy-google-bbr-congestion-control\"\u003eDeploy Google BBR congestion control\u003c/a\u003e\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eTechnical details\u003c/h2\u003e\u003ca id=\"user-content-technical-details\" class=\"anchor\" aria-label=\"Permalink: Technical details\" href=\"#technical-details\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003eThere are two services running: \u003ccode\u003eLibreswan (pluto)\u003c/code\u003e for the IPsec VPN, and \u003ccode\u003exl2tpd\u003c/code\u003e for L2TP support.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eThe default IPsec configuration supports:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003eIPsec/L2TP with PSK\u003c/li\u003e\n\u003cli\u003eIKEv1 with PSK and XAuth (\"Cisco IPsec\")\u003c/li\u003e\n\u003cli\u003eIKEv2\u003c/li\u003e\n\u003c/ul\u003e\n\u003cp dir=\"auto\"\u003eThe ports that are exposed for this container to work are:\u003c/p\u003e\n\u003cul dir=\"auto\"\u003e\n\u003cli\u003e4500/udp and 500/udp for IPsec\u003c/li\u003e\n\u003c/ul\u003e\n\u003cdiv class=\"markdown-heading\" dir=\"auto\"\u003e\u003ch2 tabindex=\"-1\" class=\"heading-element\" dir=\"auto\"\u003eLicense\u003c/h2\u003e\u003ca id=\"user-content-license\" class=\"anchor\" aria-label=\"Permalink: License\" href=\"#license\"\u003e\u003csvg class=\"octicon octicon-link\" viewBox=\"0 0 16 16\" version=\"1.1\" width=\"16\" height=\"16\" aria-hidden=\"true\"\u003e\u003cpath d=\"m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z\"\u003e\u003c/path\u003e\u003c/svg\u003e\u003c/a\u003e\u003c/div\u003e\n\u003cp dir=\"auto\"\u003e\u003cstrong\u003eNote:\u003c/strong\u003e The software components inside the pre-built image (such as Libreswan and xl2tpd) are under the respective licenses chosen by their respective copyright holders. As for any pre-built image usage, it is the image user's responsibility to ensure that any use of this image complies with any relevant licenses for all software contained within.\u003c/p\u003e\n\u003cp dir=\"auto\"\u003eCopyright (C) 2016-2025 \u003ca href=\"https://github.com/hwdsl2\"\u003eLin Song\u003c/a\u003e \u003ca href=\"https://www.linkedin.com/in/linsongui\" rel=\"nofollow\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/0bf3dce5620f3369d66c1b50a5466d13ffde8ced8ff02b70669ce8a67454dbd1/68747470733a2f2f7374617469632e6c6963646e2e636f6d2f736364732f636f6d6d6f6e2f752f696d672f77656270726f6d6f2f62746e5f766965776d795f3136307832352e706e67\" alt=\"View my profile on LinkedIn\" data-canonical-src=\"https://static.licdn.com/scds/common/u/img/webpromo/btn_viewmy_160x25.png\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003cbr\u003e\nBased on \u003ca href=\"https://github.com/sarfata/voodooprivacy\"\u003ethe work of Thomas Sarlandie\u003c/a\u003e (Copyright 2012)\u003c/p\u003e\n\u003cp dir=\"auto\"\u003e\u003ca href=\"http://creativecommons.org/licenses/by-sa/3.0/\" rel=\"nofollow\"\u003e\u003cimg src=\"https://camo.githubusercontent.com/89048a6b55b3078498266d79e4a1db16804c7949182726e032bc215b970c911e/68747470733a2f2f692e6372656174697665636f6d6d6f6e732e6f72672f6c2f62792d73612f332e302f38387833312e706e67\" alt=\"Creative Commons License\" data-canonical-src=\"https://i.creativecommons.org/l/by-sa/3.0/88x31.png\" style=\"max-width: 100%;\"\u003e\u003c/a\u003e\u003cbr\u003e\nThis work is licensed under the \u003ca href=\"http://creativecommons.org/licenses/by-sa/3.0/\" rel=\"nofollow\"\u003eCreative Commons Attribution-ShareAlike 3.0 Unported License\u003c/a\u003e\u003cbr\u003e\nAttribution required: please include my name in any derivative and let me know how you have improved it!\u003c/p\u003e\n\u003c/article\u003e","loaded":true,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":[{"level":1,"text":"IPsec VPN Server on Docker","anchor":"ipsec-vpn-server-on-docker","htmlText":"IPsec VPN Server on Docker"},{"level":2,"text":"Quick start","anchor":"quick-start","htmlText":"Quick start"},{"level":2,"text":"Features","anchor":"features","htmlText":"Features"},{"level":2,"text":"Install Docker","anchor":"install-docker","htmlText":"Install Docker"},{"level":2,"text":"Download","anchor":"download","htmlText":"Download"},{"level":3,"text":"Image comparison","anchor":"image-comparison","htmlText":"Image comparison"},{"level":2,"text":"How to use this image","anchor":"how-to-use-this-image","htmlText":"How to use this image"},{"level":3,"text":"Environment variables","anchor":"environment-variables","htmlText":"Environment variables"},{"level":3,"text":"Additional environment variables","anchor":"additional-environment-variables","htmlText":"Additional environment variables"},{"level":3,"text":"Start the IPsec VPN server","anchor":"start-the-ipsec-vpn-server","htmlText":"Start the IPsec VPN server"},{"level":3,"text":"Retrieve VPN login details","anchor":"retrieve-vpn-login-details","htmlText":"Retrieve VPN login details"},{"level":2,"text":"Next steps","anchor":"next-steps","htmlText":"Next steps"},{"level":2,"text":"Important notes","anchor":"important-notes","htmlText":"Important notes"},{"level":2,"text":"Update Docker image","anchor":"update-docker-image","htmlText":"Update Docker image"},{"level":2,"text":"Configure and use IKEv2 VPN","anchor":"configure-and-use-ikev2-vpn","htmlText":"Configure and use IKEv2 VPN"},{"level":2,"text":"Advanced usage","anchor":"advanced-usage","htmlText":"Advanced usage"},{"level":2,"text":"Technical details","anchor":"technical-details","htmlText":"Technical details"},{"level":2,"text":"License","anchor":"license","htmlText":"License"}],"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fhwdsl2%2Fdocker-ipsec-vpn-server"}},{"displayName":"LICENSE.md","repoName":"docker-ipsec-vpn-server","refName":"master","path":"LICENSE.md","preferredFileType":"license","tabName":"License","richText":null,"loaded":false,"timedOut":false,"errorMessage":null,"headerInfo":{"toc":null,"siteNavLoginPath":"/login?return_to=https%3A%2F%2Fgithub.com%2Fhwdsl2%2Fdocker-ipsec-vpn-server"}}],"overviewFilesProcessingTime":0}},"appPayload":{"helpUrl":"https://docs.github.com","findFileWorkerPath":"/assets-cdn/worker/find-file-worker-7d7eb7c71814.js","findInFileWorkerPath":"/assets-cdn/worker/find-in-file-worker-96e76d5fdb2c.js","githubDevUrl":null,"enabled_features":{"copilot_workspace":null,"code_nav_ui_events":false,"overview_shared_code_dropdown_button":false,"react_blob_overlay":false,"accessible_code_button":true,"github_models_repo_integration":false}}}}</script> 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tabindex="-1" class="heading-element" dir="auto">IPsec VPN Server on Docker</h1><a id="user-content-ipsec-vpn-server-on-docker" class="anchor" aria-label="Permalink: IPsec VPN Server on Docker" href="#ipsec-vpn-server-on-docker"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><a href="https://github.com/hwdsl2/docker-ipsec-vpn-server/actions/workflows/main-alpine.yml"><img src="https://github.com/hwdsl2/docker-ipsec-vpn-server/actions/workflows/main-alpine.yml/badge.svg" alt="Build Status" style="max-width: 100%;"></a> <a href="https://github.com/hwdsl2/docker-ipsec-vpn-server/stargazers"><img src="/hwdsl2/docker-ipsec-vpn-server/raw/master/docs/images/badges/github-stars.svg" alt="GitHub Stars" style="max-width: 100%;"></a> <a href="https://hub.docker.com/r/hwdsl2/ipsec-vpn-server/" rel="nofollow"><img src="/hwdsl2/docker-ipsec-vpn-server/raw/master/docs/images/badges/docker-stars.svg" alt="Docker Stars" style="max-width: 100%;"></a> <a href="https://hub.docker.com/r/hwdsl2/ipsec-vpn-server/" rel="nofollow"><img src="/hwdsl2/docker-ipsec-vpn-server/raw/master/docs/images/badges/docker-pulls.svg" alt="Docker Pulls" style="max-width: 100%;"></a></p> <p dir="auto">Docker image to run an IPsec VPN server, with IPsec/L2TP, Cisco IPsec and IKEv2.</p> <p dir="auto">Based on Alpine 3.21 or Debian 12 with <a href="https://libreswan.org" rel="nofollow">Libreswan</a> (IPsec VPN software) and <a href="https://github.com/xelerance/xl2tpd">xl2tpd</a> (L2TP daemon).</p> <p dir="auto">An IPsec VPN encrypts your network traffic, so that nobody between you and the VPN server can eavesdrop on your data as it travels via the Internet. This is especially useful when using unsecured networks, e.g. at coffee shops, airports or hotel rooms.</p> <p dir="auto"><strong><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/vpn-book.md">» 📖 Book: Build Your Own VPN Server</a></strong> [<a href="https://books2read.com/vpnguide?store=amazon" rel="nofollow">English</a> | <a href="https://books2read.com/vpnguidezh" rel="nofollow">中文</a> | <a href="https://books2read.com/vpnguidees?store=amazon" rel="nofollow">Español</a> | <a href="https://books2read.com/vpnguidede?store=amazon" rel="nofollow">Deutsch</a> | <a href="https://books2read.com/vpnguidefr?store=amazon" rel="nofollow">Français</a> | <a href="https://books2read.com/vpnguideit?store=amazon" rel="nofollow">Italiano</a> | <a href="https://books2read.com/vpnguidenl?store=amazon" rel="nofollow">NL</a> | <a href="https://books2read.com/vpnguidept?store=amazon" rel="nofollow">PT</a> | <a href="https://books2read.com/vpnguideja?store=amazon" rel="nofollow">日本語</a>]</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Quick start</h2><a id="user-content-quick-start" class="anchor" aria-label="Permalink: Quick start" href="#quick-start"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Use this command to set up an IPsec VPN server on Docker:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker run \ --name ipsec-vpn-server \ --restart=always \ -v ikev2-vpn-data:/etc/ipsec.d \ -v /lib/modules:/lib/modules:ro \ -p 500:500/udp \ -p 4500:4500/udp \ -d --privileged \ hwdsl2/ipsec-vpn-server"><pre class="notranslate"><code>docker run \ --name ipsec-vpn-server \ --restart=always \ -v ikev2-vpn-data:/etc/ipsec.d \ -v /lib/modules:/lib/modules:ro \ -p 500:500/udp \ -p 4500:4500/udp \ -d --privileged \ hwdsl2/ipsec-vpn-server </code></pre></div> <p dir="auto">Your VPN login details will be randomly generated. See <a href="#retrieve-vpn-login-details">Retrieve VPN login details</a>.</p> <p dir="auto">Alternatively, you may <a href="https://github.com/hwdsl2/setup-ipsec-vpn">set up IPsec VPN without Docker</a>. To learn more about how to use this image, read the sections below.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Features</h2><a id="user-content-features" class="anchor" aria-label="Permalink: Features" href="#features"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <ul dir="auto"> <li>Supports IKEv2 with strong and fast ciphers (e.g. AES-GCM)</li> <li>Generates VPN profiles to auto-configure iOS, macOS and Android devices</li> <li>Supports Windows, macOS, iOS, Android, Chrome OS and Linux as VPN clients</li> <li>Includes a helper script to manage IKEv2 users and certificates</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Install Docker</h2><a id="user-content-install-docker" class="anchor" aria-label="Permalink: Install Docker" href="#install-docker"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">First, <a href="https://docs.docker.com/engine/install/" rel="nofollow">install Docker</a> on your Linux server. You may also use <a href="https://podman.io" rel="nofollow">Podman</a> to run this image, after <a href="https://podman.io/whatis.html" rel="nofollow">creating an alias</a> for <code>docker</code>.</p> <p dir="auto">Advanced users can use this image on macOS with <a href="https://docs.docker.com/docker-for-mac/" rel="nofollow">Docker for Mac</a>. Before using IPsec/L2TP mode, you may need to restart the Docker container once with <code>docker restart ipsec-vpn-server</code>. This image does not support Docker for Windows.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Download</h2><a id="user-content-download" class="anchor" aria-label="Permalink: Download" href="#download"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Get the trusted build from the <a href="https://hub.docker.com/r/hwdsl2/ipsec-vpn-server/" rel="nofollow">Docker Hub registry</a>:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker pull hwdsl2/ipsec-vpn-server"><pre class="notranslate"><code>docker pull hwdsl2/ipsec-vpn-server </code></pre></div> <p dir="auto">Alternatively, you may download from <a href="https://quay.io/repository/hwdsl2/ipsec-vpn-server" rel="nofollow">Quay.io</a>:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker pull quay.io/hwdsl2/ipsec-vpn-server docker image tag quay.io/hwdsl2/ipsec-vpn-server hwdsl2/ipsec-vpn-server"><pre class="notranslate"><code>docker pull quay.io/hwdsl2/ipsec-vpn-server docker image tag quay.io/hwdsl2/ipsec-vpn-server hwdsl2/ipsec-vpn-server </code></pre></div> <p dir="auto">Supported platforms: <code>linux/amd64</code>, <code>linux/arm64</code> and <code>linux/arm/v7</code>.</p> <p dir="auto">Advanced users can <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#build-from-source-code">build from source code</a> on GitHub.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Image comparison</h3><a id="user-content-image-comparison" class="anchor" aria-label="Permalink: Image comparison" href="#image-comparison"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Two pre-built images are available. The default Alpine-based image is only ~18 MB.</p> <markdown-accessiblity-table><table> <thead> <tr> <th></th> <th>Alpine-based</th> <th>Debian-based</th> </tr> </thead> <tbody> <tr> <td>Image name</td> <td>hwdsl2/ipsec-vpn-server</td> <td>hwdsl2/ipsec-vpn-server:debian</td> </tr> <tr> <td>Compressed size</td> <td>~ 18 MB</td> <td>~ 62 MB</td> </tr> <tr> <td>Base image</td> <td>Alpine Linux 3.21</td> <td>Debian Linux 12</td> </tr> <tr> <td>Platforms</td> <td>amd64, arm64, arm/v7</td> <td>amd64, arm64, arm/v7</td> </tr> <tr> <td>Libreswan version</td> <td>5.2</td> <td>5.2</td> </tr> <tr> <td>IPsec/L2TP</td> <td>✅</td> <td>✅</td> </tr> <tr> <td>Cisco IPsec</td> <td>✅</td> <td>✅</td> </tr> <tr> <td>IKEv2</td> <td>✅</td> <td>✅</td> </tr> </tbody> </table></markdown-accessiblity-table> <p dir="auto"><strong>Note:</strong> To use the Debian-based image, replace every <code>hwdsl2/ipsec-vpn-server</code> with <code>hwdsl2/ipsec-vpn-server:debian</code> in this README. These images are not currently compatible with Synology NAS systems.</p> <details> <summary> I want to use the older Libreswan version 4. </summary> <p dir="auto">It is generally recommended to use the latest <a href="https://libreswan.org/" rel="nofollow">Libreswan</a> version 5, which is the default version in this project. However, if you want to use the older Libreswan version 4, you can build the Docker image from source code:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="git clone https://github.com/hwdsl2/docker-ipsec-vpn-server cd docker-ipsec-vpn-server # Specify Libreswan version 4 sed -i 's/SWAN_VER=5\..*/SWAN_VER=4.15/' Dockerfile Dockerfile.debian # To build Alpine-based image docker build -t hwdsl2/ipsec-vpn-server . # To build Debian-based image docker build -f Dockerfile.debian -t hwdsl2/ipsec-vpn-server:debian ."><pre class="notranslate"><code>git clone https://github.com/hwdsl2/docker-ipsec-vpn-server cd docker-ipsec-vpn-server # Specify Libreswan version 4 sed -i 's/SWAN_VER=5\..*/SWAN_VER=4.15/' Dockerfile Dockerfile.debian # To build Alpine-based image docker build -t hwdsl2/ipsec-vpn-server . # To build Debian-based image docker build -f Dockerfile.debian -t hwdsl2/ipsec-vpn-server:debian . </code></pre></div> </details> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">How to use this image</h2><a id="user-content-how-to-use-this-image" class="anchor" aria-label="Permalink: How to use this image" href="#how-to-use-this-image"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Environment variables</h3><a id="user-content-environment-variables" class="anchor" aria-label="Permalink: Environment variables" href="#environment-variables"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><strong>Note:</strong> All the variables to this image are optional, which means you don't have to type in any variable, and you can have an IPsec VPN server out of the box! To do that, create an empty <code>env</code> file using <code>touch vpn.env</code>, and skip to the next section.</p> <p dir="auto">This Docker image uses the following variables, that can be declared in an <code>env</code> file (see <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/vpn.env.example">example</a>):</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="VPN_IPSEC_PSK=your_ipsec_pre_shared_key VPN_USER=your_vpn_username VPN_PASSWORD=your_vpn_password"><pre class="notranslate"><code>VPN_IPSEC_PSK=your_ipsec_pre_shared_key VPN_USER=your_vpn_username VPN_PASSWORD=your_vpn_password </code></pre></div> <p dir="auto">This will create a user account for VPN login, which can be used by your multiple devices<a href="#important-notes">*</a>. The IPsec PSK (pre-shared key) is specified by the <code>VPN_IPSEC_PSK</code> environment variable. The VPN username is defined in <code>VPN_USER</code>, and VPN password is specified by <code>VPN_PASSWORD</code>.</p> <p dir="auto">Additional VPN users are supported, and can be optionally declared in your <code>env</code> file like this. Usernames and passwords must be separated by spaces, and usernames cannot contain duplicates. All VPN users will share the same IPsec PSK.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="VPN_ADDL_USERS=additional_username_1 additional_username_2 VPN_ADDL_PASSWORDS=additional_password_1 additional_password_2"><pre class="notranslate"><code>VPN_ADDL_USERS=additional_username_1 additional_username_2 VPN_ADDL_PASSWORDS=additional_password_1 additional_password_2 </code></pre></div> <p dir="auto"><strong>Note:</strong> In your <code>env</code> file, DO NOT put <code>""</code> or <code>''</code> around values, or add space around <code>=</code>. DO NOT use these special characters within values: <code>\ " '</code>. A secure IPsec PSK should consist of at least 20 random characters.</p> <p dir="auto"><strong>Note:</strong> If you modify the <code>env</code> file after the Docker container is already created, you must remove and re-create the container for the changes to take effect. Refer to <a href="#update-docker-image">Update Docker image</a>.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Additional environment variables</h3><a id="user-content-additional-environment-variables" class="anchor" aria-label="Permalink: Additional environment variables" href="#additional-environment-variables"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Advanced users can optionally specify a DNS name, client name and/or custom DNS servers.</p> <details> <summary> Learn how to specify a DNS name, client name and/or custom DNS servers. </summary> <p dir="auto">Advanced users can optionally specify a DNS name for the IKEv2 server address. The DNS name must be a fully qualified domain name (FQDN). Example:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="VPN_DNS_NAME=vpn.example.com"><pre class="notranslate"><code>VPN_DNS_NAME=vpn.example.com </code></pre></div> <p dir="auto">You may specify a name for the first IKEv2 client. Use one word only, no special characters except <code>-</code> and <code>_</code>. The default is <code>vpnclient</code> if not specified.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="VPN_CLIENT_NAME=your_client_name"><pre class="notranslate"><code>VPN_CLIENT_NAME=your_client_name </code></pre></div> <p dir="auto">By default, clients are set to use <a href="https://developers.google.com/speed/public-dns/" rel="nofollow">Google Public DNS</a> when the VPN is active. You may specify custom DNS server(s) for all VPN modes. Example:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="VPN_DNS_SRV1=1.1.1.1 VPN_DNS_SRV2=1.0.0.1"><pre class="notranslate"><code>VPN_DNS_SRV1=1.1.1.1 VPN_DNS_SRV2=1.0.0.1 </code></pre></div> <p dir="auto">For more details and a list of some popular public DNS providers, see <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md">Use alternative DNS servers</a>.</p> <p dir="auto">By default, no password is required when importing IKEv2 client configuration. You can choose to protect client config files using a random password.</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="VPN_PROTECT_CONFIG=yes"><pre class="notranslate"><code>VPN_PROTECT_CONFIG=yes </code></pre></div> <p dir="auto"><strong>Note:</strong> The variables above have no effect for IKEv2 mode, if IKEv2 is already set up in the Docker container. In this case, you may remove IKEv2 and set it up again using custom options. Refer to <a href="#configure-and-use-ikev2-vpn">Configure and use IKEv2 VPN</a>.</p> </details> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Start the IPsec VPN server</h3><a id="user-content-start-the-ipsec-vpn-server" class="anchor" aria-label="Permalink: Start the IPsec VPN server" href="#start-the-ipsec-vpn-server"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">Create a new Docker container from this image (replace <code>./vpn.env</code> with your own <code>env</code> file):</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker run \ --name ipsec-vpn-server \ --env-file ./vpn.env \ --restart=always \ -v ikev2-vpn-data:/etc/ipsec.d \ -v /lib/modules:/lib/modules:ro \ -p 500:500/udp \ -p 4500:4500/udp \ -d --privileged \ hwdsl2/ipsec-vpn-server"><pre class="notranslate"><code>docker run \ --name ipsec-vpn-server \ --env-file ./vpn.env \ --restart=always \ -v ikev2-vpn-data:/etc/ipsec.d \ -v /lib/modules:/lib/modules:ro \ -p 500:500/udp \ -p 4500:4500/udp \ -d --privileged \ hwdsl2/ipsec-vpn-server </code></pre></div> <p dir="auto">In this command, we use the <code>-v</code> option of <code>docker run</code> to create a new <a href="https://docs.docker.com/storage/volumes/" rel="nofollow">Docker volume</a> named <code>ikev2-vpn-data</code>, and mount it into <code>/etc/ipsec.d</code> in the container. IKEv2 related data such as certificates and keys will persist in the volume, and later when you need to re-create the Docker container, just specify the same volume again.</p> <p dir="auto">It is recommended to enable IKEv2 when using this image. However, if you prefer not to enable IKEv2 and use only the IPsec/L2TP and IPsec/XAuth ("Cisco IPsec") modes to connect to the VPN, remove the first <code>-v</code> option from the <code>docker run</code> command above.</p> <p dir="auto"><strong>Note:</strong> Advanced users can also <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#run-without-privileged-mode">run without privileged mode</a>.</p> <div class="markdown-heading" dir="auto"><h3 tabindex="-1" class="heading-element" dir="auto">Retrieve VPN login details</h3><a id="user-content-retrieve-vpn-login-details" class="anchor" aria-label="Permalink: Retrieve VPN login details" href="#retrieve-vpn-login-details"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">If you did not specify an <code>env</code> file in the <code>docker run</code> command above, <code>VPN_USER</code> will default to <code>vpnuser</code> and both <code>VPN_IPSEC_PSK</code> and <code>VPN_PASSWORD</code> will be randomly generated. To retrieve them, view the container logs:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker logs ipsec-vpn-server"><pre class="notranslate"><code>docker logs ipsec-vpn-server </code></pre></div> <p dir="auto">Search for these lines in the output:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Connect to your new VPN with these details: Server IP: your_vpn_server_ip IPsec PSK: your_ipsec_pre_shared_key Username: your_vpn_username Password: your_vpn_password"><pre class="notranslate"><code>Connect to your new VPN with these details: Server IP: your_vpn_server_ip IPsec PSK: your_ipsec_pre_shared_key Username: your_vpn_username Password: your_vpn_password </code></pre></div> <p dir="auto">The output will also include details for IKEv2 mode, if enabled.</p> <p dir="auto">(Optional) Backup the generated VPN login details (if any) to the current directory:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker cp ipsec-vpn-server:/etc/ipsec.d/vpn-gen.env ./"><pre class="notranslate"><code>docker cp ipsec-vpn-server:/etc/ipsec.d/vpn-gen.env ./ </code></pre></div> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Next steps</h2><a id="user-content-next-steps" class="anchor" aria-label="Permalink: Next steps" href="#next-steps"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><em>Read this in other languages: <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/README.md#next-steps">English</a>, <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/README-zh.md#%E4%B8%8B%E4%B8%80%E6%AD%A5">中文</a>.</em></p> <p dir="auto">Get your computer or device to use the VPN. Please refer to:</p> <p dir="auto"><strong><a href="#configure-and-use-ikev2-vpn">Configure and use IKEv2 VPN (recommended)</a></strong></p> <p dir="auto"><strong><a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md">Configure IPsec/L2TP VPN Clients</a></strong></p> <p dir="auto"><strong><a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-xauth.md">Configure IPsec/XAuth ("Cisco IPsec") VPN Clients</a></strong></p> <p dir="auto"><strong>Read <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/vpn-book.md">📖 VPN book</a> to access <a href="https://ko-fi.com/post/Support-this-project-and-get-access-to-supporter-o-O5O7FVF8J" rel="nofollow">extra content</a>.</strong></p> <p dir="auto">Enjoy your very own VPN! ✨🎉🚀✨</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Important notes</h2><a id="user-content-important-notes" class="anchor" aria-label="Permalink: Important notes" href="#important-notes"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><strong>Windows users</strong>: For IPsec/L2TP mode, a <a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients.md#windows-error-809">one-time registry change</a> is required if the VPN server or client is behind NAT (e.g. home router).</p> <p dir="auto">The same VPN account can be used by your multiple devices. However, due to an IPsec/L2TP limitation, if you wish to connect multiple devices from behind the same NAT (e.g. home router), you must use <a href="#configure-and-use-ikev2-vpn">IKEv2</a> or <a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/clients-xauth.md">IPsec/XAuth</a> mode.</p> <p dir="auto">If you wish to add, edit or remove VPN user accounts, first update your <code>env</code> file, then you must remove and re-create the Docker container using instructions from the <a href="#update-docker-image">next section</a>. Advanced users can <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bind-mount-the-env-file">bind mount</a> the <code>env</code> file.</p> <p dir="auto">For servers with an external firewall (e.g. <a href="https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-security-groups.html" rel="nofollow">EC2</a>/<a href="https://cloud.google.com/vpc/docs/firewalls" rel="nofollow">GCE</a>), open UDP ports 500 and 4500 for the VPN. Aliyun users, see <a href="https://github.com/hwdsl2/setup-ipsec-vpn/issues/433" data-hovercard-type="issue" data-hovercard-url="/hwdsl2/setup-ipsec-vpn/issues/433/hovercard">#433</a>.</p> <p dir="auto">Clients are set to use <a href="https://developers.google.com/speed/public-dns/" rel="nofollow">Google Public DNS</a> when the VPN is active. If another DNS provider is preferred, read <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#use-alternative-dns-servers">this section</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Update Docker image</h2><a id="user-content-update-docker-image" class="anchor" aria-label="Permalink: Update Docker image" href="#update-docker-image"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">To update the Docker image and container, first <a href="#download">download</a> the latest version:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="docker pull hwdsl2/ipsec-vpn-server"><pre class="notranslate"><code>docker pull hwdsl2/ipsec-vpn-server </code></pre></div> <p dir="auto">If the Docker image is already up to date, you should see:</p> <div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Status: Image is up to date for hwdsl2/ipsec-vpn-server:latest"><pre class="notranslate"><code>Status: Image is up to date for hwdsl2/ipsec-vpn-server:latest </code></pre></div> <p dir="auto">Otherwise, it will download the latest version. To update your Docker container, first write down all your <a href="#retrieve-vpn-login-details">VPN login details</a>. Then remove the Docker container with <code>docker rm -f ipsec-vpn-server</code>. Finally, re-create it using instructions from <a href="#how-to-use-this-image">How to use this image</a>.</p> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Configure and use IKEv2 VPN</h2><a id="user-content-configure-and-use-ikev2-vpn" class="anchor" aria-label="Permalink: Configure and use IKEv2 VPN" href="#configure-and-use-ikev2-vpn"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">IKEv2 mode has improvements over IPsec/L2TP and IPsec/XAuth ("Cisco IPsec"), and does not require an IPsec PSK, username or password. Read more <a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md">here</a>.</p> <p dir="auto">First, check container logs to view details for IKEv2:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="docker logs ipsec-vpn-server"><pre>docker logs ipsec-vpn-server</pre></div> <p dir="auto"><strong>Note:</strong> If you cannot find IKEv2 details, IKEv2 may not be enabled in the container. Try updating the Docker image and container using instructions from the <a href="#update-docker-image">Update Docker image</a> section.</p> <p dir="auto">During IKEv2 setup, an IKEv2 client (with default name <code>vpnclient</code>) is created, with its configuration exported to <code>/etc/ipsec.d</code> <strong>inside the container</strong>. To copy config file(s) to the Docker host:</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="# Check contents of /etc/ipsec.d in the container docker exec -it ipsec-vpn-server ls -l /etc/ipsec.d # Example: Copy a client config file from the container # to the current directory on the Docker host docker cp ipsec-vpn-server:/etc/ipsec.d/vpnclient.p12 ./"><pre><span class="pl-c"><span class="pl-c">#</span> Check contents of /etc/ipsec.d in the container</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ls -l /etc/ipsec.d <span class="pl-c"><span class="pl-c">#</span> Example: Copy a client config file from the container</span> <span class="pl-c"><span class="pl-c">#</span> to the current directory on the Docker host</span> docker cp ipsec-vpn-server:/etc/ipsec.d/vpnclient.p12 ./</pre></div> <p dir="auto"><strong>Next steps:</strong> <a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md">Configure your devices</a> to use the IKEv2 VPN.</p> <details> <summary> Learn how to manage IKEv2 clients. </summary> <p dir="auto">You can manage IKEv2 clients using the helper script. See examples below. To customize client options, run the script without arguments.</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="# Add a new client (using default options) docker exec -it ipsec-vpn-server ikev2.sh --addclient [client name] # Export configuration for an existing client docker exec -it ipsec-vpn-server ikev2.sh --exportclient [client name] # List existing clients docker exec -it ipsec-vpn-server ikev2.sh --listclients # Show usage docker exec -it ipsec-vpn-server ikev2.sh -h"><pre><span class="pl-c"><span class="pl-c">#</span> Add a new client (using default options)</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ikev2.sh --addclient [client name] <span class="pl-c"><span class="pl-c">#</span> Export configuration for an existing client</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ikev2.sh --exportclient [client name] <span class="pl-c"><span class="pl-c">#</span> List existing clients</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ikev2.sh --listclients <span class="pl-c"><span class="pl-c">#</span> Show usage</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ikev2.sh -h</pre></div> <p dir="auto"><strong>Note:</strong> If you encounter error "executable file not found", replace <code>ikev2.sh</code> above with <code>/opt/src/ikev2.sh</code>.</p> </details> <details> <summary> Learn how to change the IKEv2 server address. </summary> <p dir="auto">In certain circumstances, you may need to change the IKEv2 server address. For example, to switch to use a DNS name, or after server IP changes. To change the IKEv2 server address, first <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bash-shell-inside-container">open a bash shell inside the container</a>, then <a href="https://github.com/hwdsl2/setup-ipsec-vpn/blob/master/docs/ikev2-howto.md#change-ikev2-server-address">follow these instructions</a>. Note that the container logs will not show the new IKEv2 server address until you restart the Docker container.</p> </details> <details> <summary> Remove IKEv2 and set it up again using custom options. </summary> <p dir="auto">In certain circumstances, you may need to remove IKEv2 and set it up again using custom options.</p> <p dir="auto"><strong>Warning:</strong> All IKEv2 configuration including certificates and keys will be <strong>permanently deleted</strong>. This <strong>cannot be undone</strong>!</p> <p dir="auto"><strong>Option 1:</strong> Remove IKEv2 and set it up again using the helper script.</p> <p dir="auto">Note that this will override variables you specified in the <code>env</code> file, such as <code>VPN_DNS_NAME</code> and <code>VPN_CLIENT_NAME</code>, and the container logs will no longer show up-to-date information for IKEv2.</p> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="# Remove IKEv2 and delete all IKEv2 configuration docker exec -it ipsec-vpn-server ikev2.sh --removeikev2 # Set up IKEv2 again using custom options docker exec -it ipsec-vpn-server ikev2.sh"><pre><span class="pl-c"><span class="pl-c">#</span> Remove IKEv2 and delete all IKEv2 configuration</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ikev2.sh --removeikev2 <span class="pl-c"><span class="pl-c">#</span> Set up IKEv2 again using custom options</span> docker <span class="pl-c1">exec</span> -it ipsec-vpn-server ikev2.sh</pre></div> <p dir="auto"><strong>Option 2:</strong> Remove <code>ikev2-vpn-data</code> and re-create the container.</p> <ol dir="auto"> <li>Write down all your <a href="#retrieve-vpn-login-details">VPN login details</a>.</li> <li>Remove the Docker container: <code>docker rm -f ipsec-vpn-server</code>.</li> <li>Remove the <code>ikev2-vpn-data</code> volume: <code>docker volume rm ikev2-vpn-data</code>.</li> <li>Update your <code>env</code> file and add custom IKEv2 options such as <code>VPN_DNS_NAME</code> and <code>VPN_CLIENT_NAME</code>, then re-create the container. Refer to <a href="#how-to-use-this-image">How to use this image</a>.</li> </ol> </details> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Advanced usage</h2><a id="user-content-advanced-usage" class="anchor" aria-label="Permalink: Advanced usage" href="#advanced-usage"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">See <a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md">Advanced usage</a>.</p> <ul dir="auto"> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#use-alternative-dns-servers">Use alternative DNS servers</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#run-without-privileged-mode">Run without privileged mode</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#select-vpn-modes">Select VPN modes</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#access-other-containers-on-the-docker-host">Access other containers on the Docker host</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#specify-vpn-servers-public-ip">Specify VPN server's public IP</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#assign-static-ips-to-vpn-clients">Assign static IPs to VPN clients</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#customize-vpn-subnets">Customize VPN subnets</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#split-tunneling">Split tunneling</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#about-host-network-mode">About host network mode</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#enable-libreswan-logs">Enable Libreswan logs</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#check-server-status">Check server status</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#build-from-source-code">Build from source code</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bash-shell-inside-container">Bash shell inside container</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#bind-mount-the-env-file">Bind mount the env file</a></li> <li><a href="/hwdsl2/docker-ipsec-vpn-server/blob/master/docs/advanced-usage.md#deploy-google-bbr-congestion-control">Deploy Google BBR congestion control</a></li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">Technical details</h2><a id="user-content-technical-details" class="anchor" aria-label="Permalink: Technical details" href="#technical-details"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto">There are two services running: <code>Libreswan (pluto)</code> for the IPsec VPN, and <code>xl2tpd</code> for L2TP support.</p> <p dir="auto">The default IPsec configuration supports:</p> <ul dir="auto"> <li>IPsec/L2TP with PSK</li> <li>IKEv1 with PSK and XAuth ("Cisco IPsec")</li> <li>IKEv2</li> </ul> <p dir="auto">The ports that are exposed for this container to work are:</p> <ul dir="auto"> <li>4500/udp and 500/udp for IPsec</li> </ul> <div class="markdown-heading" dir="auto"><h2 tabindex="-1" class="heading-element" dir="auto">License</h2><a id="user-content-license" class="anchor" aria-label="Permalink: License" href="#license"><svg class="octicon octicon-link" viewBox="0 0 16 16" version="1.1" width="16" height="16" aria-hidden="true"><path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path></svg></a></div> <p dir="auto"><strong>Note:</strong> The software components inside the pre-built image (such as Libreswan and xl2tpd) are under the respective licenses chosen by their respective copyright holders. As for any pre-built image usage, it is the image user's responsibility to ensure that any use of this image complies with any relevant licenses for all software contained within.</p> <p dir="auto">Copyright (C) 2016-2025 <a href="https://github.com/hwdsl2">Lin Song</a> <a href="https://www.linkedin.com/in/linsongui" rel="nofollow"><img src="https://camo.githubusercontent.com/0bf3dce5620f3369d66c1b50a5466d13ffde8ced8ff02b70669ce8a67454dbd1/68747470733a2f2f7374617469632e6c6963646e2e636f6d2f736364732f636f6d6d6f6e2f752f696d672f77656270726f6d6f2f62746e5f766965776d795f3136307832352e706e67" alt="View my profile on LinkedIn" data-canonical-src="https://static.licdn.com/scds/common/u/img/webpromo/btn_viewmy_160x25.png" style="max-width: 100%;"></a><br> Based on <a href="https://github.com/sarfata/voodooprivacy">the work of Thomas Sarlandie</a> (Copyright 2012)</p> <p dir="auto"><a href="http://creativecommons.org/licenses/by-sa/3.0/" rel="nofollow"><img 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<div class="BorderGrid about-margin" data-pjax> <div class="BorderGrid-row"> <div class="BorderGrid-cell"> <div class="hide-sm hide-md"> <h2 class="mb-3 h4">About</h2> <p class="f4 my-3"> Docker image to run an IPsec VPN server, with IPsec/L2TP, Cisco IPsec and IKEv2 </p> <div class="my-3 d-flex flex-items-center"> <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-link flex-shrink-0 mr-2"> <path d="m7.775 3.275 1.25-1.25a3.5 3.5 0 1 1 4.95 4.95l-2.5 2.5a3.5 3.5 0 0 1-4.95 0 .751.751 0 0 1 .018-1.042.751.751 0 0 1 1.042-.018 1.998 1.998 0 0 0 2.83 0l2.5-2.5a2.002 2.002 0 0 0-2.83-2.83l-1.25 1.25a.751.751 0 0 1-1.042-.018.751.751 0 0 1-.018-1.042Zm-4.69 9.64a1.998 1.998 0 0 0 2.83 0l1.25-1.25a.751.751 0 0 1 1.042.018.751.751 0 0 1 .018 1.042l-1.25 1.25a3.5 3.5 0 1 1-4.95-4.95l2.5-2.5a3.5 3.5 0 0 1 4.95 0 .751.751 0 0 1-.018 1.042.751.751 0 0 1-1.042.018 1.998 1.998 0 0 0-2.83 0l-2.5 2.5a1.998 1.998 0 0 0 0 2.83Z"></path> </svg> <span class="flex-auto min-width-0 css-truncate css-truncate-target width-fit"> <a title="https://hub.docker.com/r/hwdsl2/ipsec-vpn-server" role="link" target="_blank" rel="noopener noreferrer nofollow" class="text-bold" href="https://hub.docker.com/r/hwdsl2/ipsec-vpn-server">hub.docker.com/r/hwdsl2/ipsec-vpn-server</a> </span> </div> <h3 class="sr-only">Topics</h3> <div class="my-3"> <div class="f6"> <a href="/topics/linux" title="Topic: linux" data-view-component="true" class="topic-tag topic-tag-link"> linux </a> <a href="/topics/docker" title="Topic: docker" data-view-component="true" class="topic-tag topic-tag-link"> docker </a> <a href="/topics/security" title="Topic: security" data-view-component="true" class="topic-tag topic-tag-link"> security </a> <a href="/topics/encryption" title="Topic: encryption" data-view-component="true" class="topic-tag topic-tag-link"> encryption </a> <a href="/topics/ipsec" title="Topic: ipsec" data-view-component="true" class="topic-tag topic-tag-link"> ipsec </a> <a href="/topics/network" title="Topic: network" data-view-component="true" class="topic-tag topic-tag-link"> network </a> <a href="/topics/docker-image" title="Topic: docker-image" data-view-component="true" class="topic-tag topic-tag-link"> docker-image </a> <a href="/topics/vpn" title="Topic: vpn" data-view-component="true" class="topic-tag topic-tag-link"> vpn </a> <a href="/topics/vpn-server" title="Topic: vpn-server" data-view-component="true" class="topic-tag topic-tag-link"> vpn-server </a> <a href="/topics/vpn-client" title="Topic: vpn-client" data-view-component="true" class="topic-tag topic-tag-link"> vpn-client </a> <a href="/topics/ikev2" title="Topic: ikev2" data-view-component="true" class="topic-tag topic-tag-link"> ikev2 </a> <a href="/topics/l2tp" title="Topic: l2tp" data-view-component="true" class="topic-tag topic-tag-link"> l2tp </a> <a href="/topics/libreswan" title="Topic: libreswan" data-view-component="true" 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