167 lines
9.2 KiB
HTML
167 lines
9.2 KiB
HTML
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<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta name="generator" content="pandoc">
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<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
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<title>Shaarli – Server security</title>
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<style type="text/css">code{white-space: pre;}</style>
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<style type="text/css">
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div.sourceCode { overflow-x: auto; }
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table.sourceCode, tr.sourceCode, td.lineNumbers, td.sourceCode {
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margin: 0; padding: 0; vertical-align: baseline; border: none; }
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table.sourceCode { width: 100%; line-height: 100%; }
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td.lineNumbers { text-align: right; padding-right: 4px; padding-left: 4px; color: #aaaaaa; border-right: 1px solid #aaaaaa; }
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td.sourceCode { padding-left: 5px; }
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code > span.kw { color: #007020; font-weight: bold; } /* Keyword */
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code > span.dt { color: #902000; } /* DataType */
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code > span.dv { color: #40a070; } /* DecVal */
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code > span.bn { color: #40a070; } /* BaseN */
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code > span.fl { color: #40a070; } /* Float */
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code > span.ch { color: #4070a0; } /* Char */
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code > span.st { color: #4070a0; } /* String */
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code > span.co { color: #60a0b0; font-style: italic; } /* Comment */
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code > span.ot { color: #007020; } /* Other */
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code > span.al { color: #ff0000; font-weight: bold; } /* Alert */
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code > span.fu { color: #06287e; } /* Function */
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code > span.er { color: #ff0000; font-weight: bold; } /* Error */
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code > span.wa { color: #60a0b0; font-weight: bold; font-style: italic; } /* Warning */
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code > span.cn { color: #880000; } /* Constant */
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code > span.sc { color: #4070a0; } /* SpecialChar */
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code > span.vs { color: #4070a0; } /* VerbatimString */
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code > span.ss { color: #bb6688; } /* SpecialString */
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code > span.im { } /* Import */
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code > span.va { color: #19177c; } /* Variable */
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code > span.cf { color: #007020; font-weight: bold; } /* ControlFlow */
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code > span.op { color: #666666; } /* Operator */
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code > span.bu { } /* BuiltIn */
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code > span.ex { } /* Extension */
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code > span.pp { color: #bc7a00; } /* Preprocessor */
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code > span.at { color: #7d9029; } /* Attribute */
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code > span.do { color: #ba2121; font-style: italic; } /* Documentation */
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code > span.an { color: #60a0b0; font-weight: bold; font-style: italic; } /* Annotation */
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code > span.cv { color: #60a0b0; font-weight: bold; font-style: italic; } /* CommentVar */
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code > span.in { color: #60a0b0; font-weight: bold; font-style: italic; } /* Information */
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</style>
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<link rel="stylesheet" href="github-markdown.css">
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<!--[if lt IE 9]>
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<script src="//cdnjs.cloudflare.com/ajax/libs/html5shiv/3.7.3/html5shiv-printshiv.min.js"></script>
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<![endif]-->
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</head>
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<body>
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<div id="local-sidebar">
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<ul>
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<li><a href="Home.html">Home</a></li>
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<li>Installation
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<ul>
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<li><a href="Download.html">Download</a></li>
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<li><a href="Server-requirements.html">Server requirements</a></li>
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<li><a href="Server-configuration.html">Server configuration</a></li>
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<li><a href="Server-security.html">Server security</a></li>
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<li><a href="Shaarli-installation.html">Shaarli installation</a></li>
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<li><a href="Shaarli-configuration.html">Shaarli configuration</a></li>
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<li><a href="Plugin-installation-&-configuration.html">Plugin installation & configuration</a></li>
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</ul></li>
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<li><a href="Docker.html">Docker</a></li>
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<li><a href="Plugin-list.html">Plugin list</a></li>
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<li><a href="Usage.html">Usage</a>
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<ul>
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<li><a href="Sharing-button.html">Sharing button</a> (bookmarklet)</li>
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<li><a href="Browsing-and-Searching.html">Browsing and Searching</a></li>
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<li><a href="Firefox-share.html">Firefox share</a></li>
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<li><a href="RSS-feeds.html">RSS feeds</a></li>
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</ul></li>
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<li>How To
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<ul>
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<li><a href="Backup,-restore,-import-and-export.html">Backup, restore, import and export</a></li>
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<li><a href="Upgrade-from-original-sebsauvage/Shaarli.html">Upgrade from original sebsauvage/Shaarli</a></li>
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<li><a href="Copy-an-existing-installation-over-SSH-and-serve-it-locally.html">Copy an existing installation over SSH and serve it locally</a></li>
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<li><a href="Create-and-serve-multiple-Shaarlis-(farm).html">Create and serve multiple Shaarlis (farm)</a></li>
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<li><a href="Download-CSS-styles-from-an-OPML-list.html">Download CSS styles from an OPML list</a></li>
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<li><a href="Datastore-hacks.html">Datastore hacks</a></li>
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</ul></li>
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<li><a href="Troubleshooting.html">Troubleshooting</a></li>
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<li><a href="Development.html">Development</a>
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<ul>
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<li><a href="GnuPG-signature.html">GnuPG signature</a></li>
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<li><a href="Coding-guidelines.html">Coding guidelines</a></li>
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<li><a href="Directory-structure.html">Directory structure</a></li>
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<li><a href="3rd-party-libraries.html">3rd party libraries</a></li>
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<li><a href="Plugin-System.html">Plugin System</a></li>
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<li><a href="Release-Shaarli.html">Release Shaarli</a></li>
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<li><a href="Security.html">Security</a></li>
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<li><a href="Static-analysis.html">Static analysis</a></li>
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<li><a href="Theming.html">Theming</a></li>
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<li><a href="Unit-tests.html">Unit tests</a></li>
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</ul></li>
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<li>About
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<ul>
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<li><a href="FAQ.html">FAQ</a></li>
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<li><a href="Community-&-Related-software.html">Community & Related software</a></li>
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<li><a href="TODO.html">TODO</a></li>
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</ul></li>
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</ul>
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</div>
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<h1 id="server-security">Server security</h1>
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<h2 id="php.ini">php.ini</h2>
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<p>PHP settings are defined in:</p>
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<ul>
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<li>a main configuration file, usually found under <code>/etc/php5/php.ini</code>; some distributions provide different configuration environments, e.g.
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<ul>
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<li><code>/etc/php5/php.ini</code> - used when running console scripts</li>
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<li><code>/etc/php5/apache2/php.ini</code> - used when a client requests PHP resources from Apache</li>
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<li><code>/etc/php5/php-fpm.conf</code> - used when PHP requests are proxied to PHP-FPM</li>
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</ul></li>
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<li>additional configuration files/entries, depending on the installed/enabled extensions:
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<ul>
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<li><code>/etc/php/conf.d/xdebug.ini</code></li>
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</ul></li>
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</ul>
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<h3 id="locate-.ini-files">Locate .ini files</h3>
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<h4 id="console-environment">Console environment</h4>
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<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">php</span> --ini
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<span class="kw">Configuration</span> File (php.ini) <span class="kw">Path</span>: /etc/php
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<span class="kw">Loaded</span> Configuration File: /etc/php/php.ini
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<span class="kw">Scan</span> for additional .ini files in: /etc/php/conf.d
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<span class="kw">Additional</span> .ini files parsed: /etc/php/conf.d/xdebug.ini</code></pre></div>
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<h4 id="server-environment">Server environment</h4>
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<ul>
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<li>create a <code>phpinfo.php</code> script located in a path supported by the web server, e.g.
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<ul>
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<li>Apache (with user dirs enabled): <code>/home/myself/public_html/phpinfo.php</code></li>
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<li><code>/var/www/test/phpinfo.php</code></li>
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</ul></li>
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<li>make sure the script is readable by the web server user/group (usually, <code>www</code>, <code>www-data</code> or <code>httpd</code>)</li>
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<li>access the script from a web browser</li>
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<li><p>look at the <em>Loaded Configuration File</em> and <em>Scan this dir for additional .ini files</em> entries</p>
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<div class="sourceCode"><pre class="sourceCode php"><code class="sourceCode php"><span class="kw"><?php</span> <span class="fu">phpinfo</span><span class="ot">();</span> <span class="kw">?></span></code></pre></div></li>
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</ul>
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<h2 id="fail2ban">fail2ban</h2>
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<p><code>fail2ban</code> is an intrusion prevention framework that reads server (Apache, SSH, etc.) and uses <code>iptables</code> profiles to block brute-force attempts:</p>
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<ul>
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<li><a href="http://www.fail2ban.org/wiki/index.php/Main_Page">Official website</a><a href=".html"></a></li>
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<li><a href="https://github.com/fail2ban/fail2ban">Source code</a><a href=".html"></a></li>
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</ul>
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<h3 id="read-shaarli-logs-to-ban-ips">Read Shaarli logs to ban IPs</h3>
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<p>Example configuration:</p>
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<ul>
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<li>allow 3 login attempts per IP address</li>
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<li>after 3 failures, permanently ban the corresponding IP adddress</li>
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</ul>
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<p><code>/etc/fail2ban/jail.local</code></p>
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<div class="sourceCode"><pre class="sourceCode ini"><code class="sourceCode ini"><span class="kw">[shaarli-auth][]</span><span class="dt">(.html)</span>
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<span class="dt">enabled </span><span class="ot">=</span><span class="st"> </span><span class="kw">true</span>
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<span class="dt">port </span><span class="ot">=</span><span class="st"> https,http</span>
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<span class="dt">filter </span><span class="ot">=</span><span class="st"> shaarli-auth</span>
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<span class="dt">logpath </span><span class="ot">=</span><span class="st"> /var/www/path/to/shaarli/data/log.txt</span>
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<span class="dt">maxretry </span><span class="ot">=</span><span class="st"> </span><span class="dv">3</span>
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<span class="dt">bantime </span><span class="ot">=</span><span class="st"> -</span><span class="dv">1</span></code></pre></div>
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<p><code>/etc/fail2ban/filter.d/shaarli-auth.conf</code></p>
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<div class="sourceCode"><pre class="sourceCode ini"><code class="sourceCode ini"><span class="kw">[INCLUDES][]</span><span class="dt">(.html)</span>
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<span class="dt">before </span><span class="ot">=</span><span class="st"> common.conf</span>
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<span class="kw">[Definition][]</span><span class="dt">(.html)</span>
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<span class="dt">failregex </span><span class="ot">=</span><span class="st"> \s-\s<HOST>\s-\sLogin failed for user.*$</span>
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<span class="dt">ignoreregex </span><span class="ot">=</span><span class="st"> </span></code></pre></div>
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</body>
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</html>
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