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Obtaining, Compiling, Installing, and Removing Nmap</li></ul><nav class="docnav-header"><div class="dn-unit"><a class="dn-link dn-prev" href="history-future.html" accesskey="p">Prev</a></div><div class="dn-unit"><a class="dn-link dn-next" href="inst-source.html" accesskey="n">Next</a></div></nav></header><section class="chapter" id="install"><div class="titlepage"><div><div><h1 class="title">Chapter 2. Obtaining, Compiling, Installing, and Removing Nmap</h1></div></div></div><div class="toc"><div class="toc-title">Table of Contents</div><ul class="toc"><li><span class="sect1"><a href="install.html#inst-intro">Introduction</a></span><ul><li><span class="sect2"><a href="install.html#inst-already">Testing Whether Nmap is Already Installed</a></span></li><li><span class="sect2"><a href="install.html#inst-interfaces">Command-line and Graphical Interfaces</a></span></li><li><span class="sect2"><a href="install.html#inst-download">Downloading Nmap</a></span></li><li><span class="sect2"><a href="install.html#inst-integrity">Verifying the Integrity of Nmap Downloads</a></span></li><li><span class="sect2"><a href="install.html#inst-svn">Obtaining Nmap from the Subversion (SVN) Repository</a></span></li></ul></li><li><span class="sect1"><a href="inst-source.html">Linux/Unix Compilation and Installation from Source Code</a></span><ul><li><span class="sect2"><a href="inst-source.html#inst-configure">Configure Directives</a></span></li><li><span class="sect2"><a href="inst-source.html#inst-env">Environment Variables</a></span></li><li><span class="sect2"><a href="inst-source.html#inst-compilation-probs">If You Encounter Compilation Problems</a></span></li></ul></li><li><span class="sect1"><a href="inst-linux.html">Linux Distributions</a></span><ul><li><span class="sect2"><a href="inst-linux.html#inst-rpm">RPM-based Distributions (Red Hat, Mandrake, SUSE, Fedora)</a></span></li><li><span class="sect2"><a href="inst-linux.html#inst-yum">Updating Red Hat, Fedora, Mandrake, and Yellow Dog Linux with Yum</a></span></li><li><span class="sect2"><a href="inst-linux.html#inst-debian">Debian Linux and Derivatives such as Ubuntu</a></span></li><li><span class="sect2"><a href="inst-linux.html#inst-linux-other">Other Linux Distributions</a></span></li></ul></li><li><span class="sect1"><a href="inst-windows.html">Windows</a></span><ul><li><span class="sect2"><a href="inst-windows.html#inst-win-exe">Windows Self-installer</a></span></li><li><span class="sect2"><a href="inst-windows.html#inst-win-zip">Command-line Zip Binaries</a></span><ul><li><span class="sect3"><a href="inst-windows.html#inst-win-zip-install">Installing the Nmap zip binaries</a></span></li></ul></li><li><span class="sect2"><a href="inst-windows.html#inst-win-source">Compile from Source Code</a></span></li><li><span class="sect2"><a href="inst-windows.html#inst-win-exec">Executing Nmap on Windows</a></span></li></ul></li><li><span class="sect1"><a href="inst-macosx.html">Apple Mac OS X</a></span><ul><li><span class="sect2"><a href="inst-macosx.html#inst-macosx-installer">Executable Installer</a></span></li><li><span class="sect2"><a href="inst-macosx.html#inst-macosx-source">Compile from Source Code</a></span><ul><li><span class="sect3"><a href="inst-macosx.html#idm45818756601264">Compile Nmap from source code</a></span></li><li><span class="sect3"><a href="inst-macosx.html#idm45818756589824">Compile Zenmap from source code</a></span></li></ul></li><li><span class="sect2"><a href="inst-macosx.html#inst-macosx-third-party">Third-party Packages</a></span></li><li><span class="sect2"><a href="inst-macosx.html#inst-macosx-exec">Executing Nmap on Mac OS X</a></span></li></ul></li><li><span class="sect1"><a href="inst-other-platforms.html">Other Platforms (BSD, Solaris, AIX, AmigaOS)</a></span><ul><li><span class="sect2"><a href="inst-other-platforms.html#inst-bsd">FreeBSD / OpenBSD / NetBSD</a></span><ul><li><span class="sect3"><a href="inst-other-platforms.html#inst-openbsd">OpenBSD Binary Packages and Source Ports Instructions</a></span></li><li><span class="sect3"><a href="inst-other-platforms.html#inst-freebsd">FreeBSD Binary Package and Source Ports Instructions</a></span></li><li><span class="sect3"><a href="inst-other-platforms.html#inst-netbsd">NetBSD Binary Package Instructions</a></span></li></ul></li><li><span class="sect2"><a href="inst-other-platforms.html#inst-solaris">Oracle/Sun Solaris</a></span></li><li><span class="sect2"><a href="inst-other-platforms.html#inst-aix">IBM AIX</a></span></li><li><span class="sect2"><a href="inst-other-platforms.html#inst-amiga">AmigaOS</a></span></li><li><span class="sect2"><a href="inst-other-platforms.html#inst-unix">Other proprietary UNIX (HP-UX, IRIX, etc.)</a></span></li></ul></li><li><span class="sect1"><a href="inst-removing-nmap.html">Removing Nmap</a></span></li></ul></div><a id="install-indexterm" class="indexterm"></a><section class="sect1" id="inst-intro"><div class="titlepage"><div><div><h2 class="title" style="clear: both">Introduction</h2></div></div></div><p>Nmap can often be installed or upgraded with a single command, so don't let the length of this chapter scare you. Most readers will use the table of contents to skip directly to sections that concern them. This chapter describes how to install Nmap on many platforms, including both source code compilation and binary installation methods. Graphical and command-line versions of Nmap are described and contrasted. Nmap removal instructions are also provided in case you change your mind.</p><section class="sect2" id="inst-already"><div class="titlepage"><div><div><h3 class="title">Testing Whether Nmap is Already Installed</h3></div></div></div><a id="idm45818757055680" class="indexterm"></a><p>The first step toward obtaining Nmap is to check whether you already have it. Many free operating system distributions (including most Linux and BSD systems) come with Nmap packages, although they may not be installed by default. On Unix systems, open a terminal window and try executing the command <span class="command"><strong>nmap <code class="option">--version</code></strong></span>. If Nmap exists and is in your <code class="envar">PATH</code>,<a id="idm45818757052560" class="indexterm"></a> you should see output similar to that in <a class="xref" href="install.html#ex-checking-for-nmap" title="Example 2.1. Checking for Nmap and determining its version number">Example 2.1</a>.</p><a id="idm45818757050464" class="indexterm"></a><div class="example" id="ex-checking-for-nmap"><div class="example-title">Example 2.1. Checking for Nmap and determining its version number</div><div class="example-contents"><a id="idm45818757048384" class="indexterm"></a><pre class="screen">felix~> <strong class="userinput"><code>nmap --version</code></strong> Nmap version 4.76 ( https://nmap.org ) felix~> </pre></div></div><br class="example-break"/><p>If Nmap does <span class="emphasis"><em>not</em></span> exist on the system (or if your <code class="envar">PATH</code> is incorrectly set), an error message such as <code class="computeroutput">nmap: Command not found</code> is reported. As the example above shows, Nmap responds to the command by printing its version number (here <code class="literal">4.76</code>).</p><p>Even if your system already has a copy of Nmap, you should consider upgrading to the latest version available from <a class="ulink" href="https://nmap.org/download.html" target="_top"><code class="systemitem">https://nmap.org/download.html</code></a>.<a id="idm45818757040960" class="indexterm"></a> Newer versions often run faster, fix important bugs, and feature updated operating system and service version detection databases. A list of changes since the version already on your system can be found at <a class="ulink" href="https://nmap.org/changelog.html" target="_top"><code class="systemitem">https://nmap.org/changelog.html</code></a>.<a id="idm45818757038832" class="indexterm"></a> Nmap output examples in this document may not match the output produced by older versions. </p></section><section class="sect2" id="inst-interfaces"><div class="titlepage"><div><div><h3 class="title">Command-line and Graphical Interfaces</h3></div></div></div><p>Nmap has traditionally been a command-line tool run from a Unix shell or (more recently) Windows command prompt. This allows experts to quickly execute a command that does exactly what they want without having to maneuver through a bunch of configuration panels and scattered option fields. This also makes Nmap easier to script and enables easy sharing of useful commands among the user community.</p><p>One downside of the command-line approach is that it can be intimidating for new and infrequent users. Nmap offers more than a hundred command-line options, although many are obscure features or debugging controls that most users can ignore. Many graphical frontends have been created for those users who prefer a GUI interface. Nmap has traditionally included a simple GUI for Unix named <span class="application">NmapFE</span><a id="idm45818757034800" class="indexterm"></a>, but that was replaced in 2007 by Zenmap, which we have been developing since 2005. Zenmap is far more powerful and effective than NmapFE, particularly in results viewing. Zenmap's tab-based interface lets you search and sort results, and also browse them in several ways (host details, raw Nmap output, and ports/hosts). It works on Linux, Windows, Mac OS X, and other platforms. Zenmap is covered in depth in <a class="xref" href="zenmap.html" title="Chapter 12. Zenmap GUI Users' Guide">Chapter 12, <em>Zenmap GUI Users' Guide</em></a>. The rest of this book focuses on command-line Nmap invocations. Once you understand how the command-line options work and can interpret the output, using Zenmap or the other available Nmap GUIs is easy. Nmap's options work the same way whether you choose them from radio buttons and menus or type them at a command-line. </p></section><section class="sect2" id="inst-download"><div class="titlepage"><div><div><h3 class="title">Downloading Nmap</h3></div></div></div><a id="idm45818757031616" class="indexterm"></a><p>Nmap.Org is the official source for downloading Nmap source code and binaries for Nmap and Zenmap. Source code is distributed in bzip2 and gzip compressed tar files, and binaries are available for Linux (RPM format), Windows (NSIS executable installer) and Mac OS X (<code class="filename">.dmg</code> disk image). Find all of this at <a class="ulink" href="https://nmap.org/download.html" target="_top"><code class="systemitem">https://nmap.org/download.html</code></a>.</p></section><section class="sect2" id="inst-integrity"><div class="titlepage"><div><div><h3 class="title">Verifying the Integrity of Nmap Downloads</h3></div></div></div><a id="idm45818757027328" class="indexterm"></a><p>It often pays to be paranoid about the integrity of files downloaded from the Internet. Popular packages such as Sendmail (<a class="ulink" href="http://cert.org/advisories/CA-2002-28.html" target="_top">example</a>), OpenSSH (<a class="ulink" href="http://cert.org/advisories/CA-2002-24.html" target="_top">example</a>), tcpdump, Libpcap, BitchX, Fragrouter, and many others have been infected with malicious trojans. Software distributions sites at the Free Software Foundation, Debian, and SourceForge have also been successfully compromised. This has never happened to Nmap, but one should always be careful. To verify the authenticity of an Nmap release, consult the PGP detached signatures or cryptographic hashes (including SHA1 and MD5) posted for the release in the Nmap signatures directory at <a class="ulink" href="https://nmap.org/dist/sigs/?C=M&O=D" target="_top"><code class="systemitem">https://nmap.org/dist/sigs/?C=M&O=D</code></a>.</p><p>The most secure verification mechanism is detached PGP<a id="idm45818757022544" class="indexterm"></a> signatures. As the signing key is never stored on production servers, even someone who successfully compromises the web server couldn't forge and properly sign a trojan release. While numerous applications are able to verify PGP signatures, I recommend <a class="ulink" href="http://www.gnupg.org/" target="_top">GNU Privacy Guard (GPG)</a>.</p><a id="idm45818757020640" class="indexterm"></a><p> Nmap releases are signed with a special Nmap Project Signing Key,<a id="idm45818757019488" class="indexterm"></a> which can be obtained from the major keyservers or <a class="ulink" href="https://svn.nmap.org/nmap/docs/nmap_gpgkeys.txt" target="_top"><code class="systemitem">https://svn.nmap.org/nmap/docs/nmap_gpgkeys.txt</code></a>. My key is included in that file too. The keys can be imported with the command <span class="command"><strong>gpg --import nmap_gpgkeys.txt</strong></span>. You only need to do this once, then you can verify all future Nmap releases from that machine. Before trusting the keys, verify that the fingerprints match the values shown in <a class="xref" href="install.html#ex-check-gpg-keys" title="Example 2.2. Verifying the Nmap and Fyodor PGP Key Fingerprints">Example 2.2</a>.</p><div class="example" id="ex-check-gpg-keys"><div class="example-title">Example 2.2. Verifying the Nmap and Fyodor PGP Key Fingerprints</div><div class="example-contents"><pre class="screen">flog~> <strong class="userinput"><code>gpg --fingerprint nmap fyodor</code></strong> pub 1024D/33599B5F 2005-04-24 Key fingerprint = BB61 D057 C0D7 DCEF E730 996C 1AF6 EC50 3359 9B5F uid Fyodor <fyodor@insecure.org> sub 2048g/D3C2241C 2005-04-24 pub 1024D/6B9355D0 2005-04-24 Key fingerprint = 436D 66AB 9A79 8425 FDA0 E3F8 01AF 9F03 6B93 55D0 uid Nmap Project Signing Key (https://insecure.org/) sub 2048g/A50A6A94 2005-04-24 </pre></div></div><br class="example-break"/><p>For every Nmap package download file (e.g. <code class="filename">nmap-4.76.tar.bz2</code> and <code class="filename">nmap-4.76-setup.exe</code>), there is a corresponding file in the <code class="filename">sigs</code> directory with <code class="literal">.asc</code> appended to the name (e.g. <code class="filename">nmap-4.76.tar.bz2.asc</code>). This is the detached signature file.</p><p>With the proper PGP key in your keyring and the detached signature file downloaded, verifying an Nmap release takes a single GPG command, as shown in <a class="xref" href="install.html#ex-gpg-verify-nmap-release-good" title="Example 2.3. Verifying PGP key fingerprints (Successful)">Example 2.3</a>. That example assumes that the verified file can be found in the same directory by simply removing <span class="quote">“<span class="quote">.asc</span>”</span> from the signature filename. When that isn't the case, simply pass the target filename as the final argument to GPG. If the file has been tampered with, the results will look like <a class="xref" href="install.html#ex-gpg-verify-nmap-release-bad" title="Example 2.4. Detecting a bogus file">Example 2.4</a>.</p><div class="example" id="ex-gpg-verify-nmap-release-good"><div class="example-title">Example 2.3. Verifying PGP key fingerprints (Successful)</div><div class="example-contents"><pre class="screen">flog> <strong class="userinput"><code>gpg --verify nmap-4.76.tar.bz2.asc </code></strong> gpg: Signature made Fri 12 Sep 2008 02:03:59 AM PDT using DSA key ID 6B9355D0 gpg: Good signature from "Nmap Project Signing Key (http://www.insecure.org/)" </pre></div></div><br class="example-break"/><div class="example" id="ex-gpg-verify-nmap-release-bad"><div class="example-title">Example 2.4. Detecting a bogus file</div><div class="example-contents"><pre class="screen">flog> <strong class="userinput"><code>gpg --verify nmap-4.76.tar.bz2.asc nmap-4.76-hacked.tar.bz2</code></strong> gpg: Signature made Fri 12 Sep 2008 02:03:59 AM PDT using DSA key ID 6B9355D0 gpg: BAD signature from "Nmap Project Signing Key (http://www.insecure.org/)" </pre></div></div><br class="example-break"/><p>While PGP signatures are the recommended validation technique, SHA2, SHA1, and MD5 (among other) hashes<a id="idm45818756999680" class="indexterm"></a><a id="idm45818756998992" class="indexterm"></a> are made available for more casual validation. An attacker who can manipulate your Internet traffic in real time (and is extremely skilled) or who compromises Nmap.Org and replaces both the distribution file and digest file, could defeat this test. However, it can be useful to check the authoritative Nmap.Org hashes if you obtain Nmap from a third party or feel it might have been accidentally corrupted. For every Nmap package download file, there is a corresponding file in the <code class="filename">sigs</code> directory with <code class="literal">.digest.txt</code> appended to the name (e.g. <code class="filename">nmap-4.76.tar.bz2.digest.txt</code>). An example is shown in <a class="xref" href="install.html#ex-digest-file" title="Example 2.5. A typical Nmap release digest file">Example 2.5</a>. This is the detached signature file. The hashes from the digest file can be verified using common tools such as <span class="application">gpg</span>, <span class="application">sha1sum</span>, or <span class="application">md5sum</span>, as shown in <a class="xref" href="install.html#ex-digest-file-verify" title="Example 2.6. Verifying Nmap hashes">Example 2.6, “Verifying Nmap hashes”</a>.</p><div class="example" id="ex-digest-file"><div class="example-title">Example 2.5. A typical Nmap release digest file</div><div class="example-contents"><pre class="screen">flog> <strong class="userinput"><code>cat sigs/nmap-4.76.tgz.digest.txt </code></strong> nmap-4.76.tgz: MD5 = 54 B5 C9 E3 F4 4C 1A DD E1 7D F6 81 70 EB 7C FE nmap-4.76.tgz: SHA1 = 4374 CF9C A882 2C28 5DE9 D00E 8F67 06D0 BCFA A403 nmap-4.76.tgz: RMD160 = AE7B 80EF 4CE6 DBAA 6E65 76F9 CA38 4A22 3B89 BD3A nmap-4.76.tgz: SHA224 = 524D479E 717D98D0 2FB0A42B 9A4E6E52 4027C9B6 1D843F95 D419F87F nmap-4.76.tgz: SHA256 = 0E960E05 53EB7647 0C8517A0 038092A3 969DB65C BE23C03F D6DAEF1A CDCC9658 nmap-4.76.tgz: SHA384 = D52917FD 9EE6EE62 F5F456BF E245675D B6EEEBC5 0A287B27 3CAA4F50 B171DC23 FE7808A8 C5E3A49A 4A78ACBE A5AEED33 nmap-4.76.tgz: SHA512 = 826CD89F 7930A765 C9FE9B41 1DAFD113 2C883857 2A3A9503 E4C1E690 20A37FC8 37564DC3 45FF0C97 EF45ABE6 6CEA49FF E262B403 A52F4ECE C23333A0 48DEDA66 </pre></div></div><br class="example-break"/><div class="example" id="ex-digest-file-verify"><div class="example-title">Example 2.6. Verifying Nmap hashes</div><div class="example-contents"><pre class="screen">flog> <strong class="userinput"><code>gpg --print-md sha256 nmap-4.76.tgz </code></strong> nmap-4.76.tgz: 0E960E05 53EB7647 0C8517A0 038092A3 969DB65C BE23C03F D6DAEF1A CDCC9658 flog> <strong class="userinput"><code>sha1sum nmap-4.76.tgz </code></strong> 4374cf9ca8822c285de9d00e8f6706d0bcfaa403 nmap-4.76.tgz flog> <strong class="userinput"><code>md5sum nmap-4.76.tgz</code></strong> 54b5c9e3f44c1adde17df68170eb7cfe nmap-4.76.tgz </pre></div></div><br class="example-break"/><p>While releases from Nmap.Org are signed as described in this section, certain Nmap add-ons, interfaces, and platform-specific binaries are developed and distributed by other parties. They have different mechanisms for establishing the authenticity of their downloads.</p></section><section class="sect2" id="inst-svn"><div class="titlepage"><div><div><h3 class="title">Obtaining Nmap from the Subversion (SVN) Repository</h3></div></div></div><a id="idm45818756982736" class="indexterm"></a><a id="idm45818756981920" class="indexterm"></a><p>In addition to regular stable and development releases, the latest Nmap source code is always available using the <a class="ulink" href="http://subversion.apache.org" target="_top">Subversion (SVN) revision control system</a>. This delivers new features and version/OS detection database updates immediately as they are developed. The downside is that SVN head revisions aren't always as stable as official releases. So SVN is most useful for Nmap developers and users who need a fix which hasn't yet been formally released.</p><p> SVN write access is strictly limited to top Nmap developers, but everyone has read access to the repository. Check out the latest code using the command <span class="command"><strong>svn co https://svn.nmap.org/nmap</strong></span>. Then you can later update your source code by typing <span class="command"><strong>svn up</strong></span> in your working directory.</p><p>While most users only follow the <code class="filename">/nmap</code> directory in SVN, there is one other interesting directory: <code class="filename">/nmap-exp</code>. This directory contains <span class="emphasis"><em>experimental</em></span> Nmap branches which Nmap developers create when they wish to try new things without destabilizing Nmap proper. When developers feel that an experimental branch is ready for wider-scale testing, they will generally email the location to the <em class="citetitle">nmap-dev</em> mailing list.</p><p>Once Nmap is checked out, you can build it from source code just as you would with the Nmap tarball (described later in this chapter).</p><p>If you would like real-time (or digested) notification and diffs by email when any changes are made to Nmap, sign up for the nmap-svn mailing list at <a class="ulink" href="https://nmap.org/mailman/listinfo/svn" target="_top"><code class="systemitem">https://nmap.org/mailman/listinfo/svn</code></a>.</p></section></section><a id="idm45818756432320" class="indexterm"></a></section><footer><hr/><nav class="docnav-footer"><div class="dn-unit"><a class="dn-link dn-prev" href="history-future.html">Prev</a><span class="dn-title">The History and Future of Nmap</span></div><div class="dn-unit"><a class="dn-link dn-up" href="toc.html" accesskey="u">Up</a><span class="dn-title">Nmap Network Scanning</span></div><div class="dn-unit"><a class="dn-link dn-home" href="toc.html" accesskey="h">Home</a></div><div class="dn-unit"><a class="dn-link dn-next" href="inst-source.html">Next</a><span class="dn-title">Linux/Unix Compilation and Installation from Source Code</span></div></nav></footer> </main><!-- content --> <footer id="nst-foot"> <form class="nst-search" id="nst-foot-search" action="/search/"> <input class="nst-search-q" name="q" type="search" placeholder="Site Search"> <button class="nst-search-button" title="Search"> <img style="width:100%;aspect-ratio:1/1;" alt="" aria-hidden="true" src="/shared/images/nst-icons.svg#search"> </button> </form> <div class="flexlists"> <div class="fl-unit"> <h2><a class="nlink" href="https://nmap.org/">Nmap Security Scanner</a></h2> <ul> <li><a class="nlink" href="https://nmap.org/book/man.html">Ref Guide</a> <li><a class="nlink" href="https://nmap.org/book/install.html">Install Guide</a> <li><a class="nlink" href="https://nmap.org/docs.html">Docs</a> <li><a class="nlink" href="https://nmap.org/download.html">Download</a> <li><a class="nlink" href="https://nmap.org/oem/">Nmap OEM</a> </ul> </div> <div class="fl-unit"> <h2><a class="nlink" href="https://npcap.com/">Npcap packet capture</a></h2> <ul> <li><a class="nlink" href="https://npcap.com/guide/">User's Guide</a> <li><a class="nlink" href="https://npcap.com/guide/npcap-devguide.html#npcap-api">API docs</a> <li><a class="nlink" href="https://npcap.com/#download">Download</a> <li><a class="nlink" href="https://npcap.com/oem/">Npcap OEM</a> </ul> </div> <div class="fl-unit"> <h2><a class="nlink" href="https://seclists.org/">Security Lists</a></h2> <ul> <li><a class="nlink" href="https://seclists.org/nmap-announce/">Nmap Announce</a> <li><a class="nlink" href="https://seclists.org/nmap-dev/">Nmap Dev</a> <li><a class="nlink" href="https://seclists.org/fulldisclosure/">Full Disclosure</a> <li><a class="nlink" href="https://seclists.org/oss-sec/">Open Source Security</a> <li><a class="nlink" href="https://seclists.org/dataloss/">BreachExchange</a> </ul> </div> <div class="fl-unit"> <h2><a class="nlink" href="https://sectools.org">Security Tools</a></h2> <ul> <li><a class="nlink" href="https://sectools.org/tag/vuln-scanners/">Vuln scanners</a> <li><a class="nlink" href="https://sectools.org/tag/pass-audit/">Password audit</a> <li><a class="nlink" href="https://sectools.org/tag/web-scanners/">Web scanners</a> <li><a class="nlink" href="https://sectools.org/tag/wireless/">Wireless</a> <li><a class="nlink" href="https://sectools.org/tag/sploits/">Exploitation</a> </ul> </div> <div class="fl-unit"> <h2><a class="nlink" href="https://insecure.org/">About</a></h2> <ul> <li><a class="nlink" href="https://insecure.org/fyodor/">About/Contact</a> <li><a class="nlink" href="https://insecure.org/privacy.html">Privacy</a> <li><a class="nlink" href="https://insecure.org/advertising.html">Advertising</a> <li><a class="nlink" href="https://nmap.org/npsl/">Nmap Public Source License</a> </ul> </div> <div class="fl-unit social-links"> <a class="nlink" href="https://twitter.com/nmap" title="Visit us on Twitter"> <img width="32" height="32" src="/shared/images/nst-icons.svg#twitter" alt="" aria-hidden="true"> </a> <a class="nlink" href="https://facebook.com/nmap" title="Visit us on Facebook"> <img width="32" height="32" src="/shared/images/nst-icons.svg#facebook" alt="" aria-hidden="true"> </a> <a class="nlink" href="https://github.com/nmap/" title="Visit us on Github"> <img width="32" height="32" src="/shared/images/nst-icons.svg#github" alt="" aria-hidden="true"> </a> <a class="nlink" href="https://reddit.com/r/nmap/" title="Discuss Nmap on Reddit"> <img width="32" height="32" src="/shared/images/nst-icons.svg#reddit" alt="" aria-hidden="true"> </a> </div> </div> </footer> </div><!-- wrapper --> </body> </html>