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authorArthurHoaro <arthur@hoa.ro>2016-04-14 14:20:23 +0200
committerArthurHoaro <arthur@hoa.ro>2016-04-14 15:18:25 +0200
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1<!DOCTYPE html>
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7 <title>Shaarli – Server security</title>
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9 <style type="text/css">
10div.sourceCode { overflow-x: auto; }
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25code > span.al { color: #ff0000; font-weight: bold; } /* Alert */
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55<li>Installation
56<ul>
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58<li><a href="Server-requirements.html">Server requirements</a></li>
59<li><a href="Server-configuration.html">Server configuration</a></li>
60<li><a href="Server-security.html">Server security</a></li>
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102</ul></li>
103</ul>
104</div>
105<h1 id="server-security">Server security</h1>
106<h2 id="php.ini">php.ini</h2>
107<p>PHP settings are defined in:</p>
108<ul>
109<li>a main configuration file, usually found under <code>/etc/php5/php.ini</code>; some distributions provide different configuration environments, e.g.
110<ul>
111<li><code>/etc/php5/php.ini</code> - used when running console scripts</li>
112<li><code>/etc/php5/apache2/php.ini</code> - used when a client requests PHP resources from Apache</li>
113<li><code>/etc/php5/php-fpm.conf</code> - used when PHP requests are proxied to PHP-FPM</li>
114</ul></li>
115<li>additional configuration files/entries, depending on the installed/enabled extensions:
116<ul>
117<li><code>/etc/php/conf.d/xdebug.ini</code></li>
118</ul></li>
119</ul>
120<h3 id="locate-.ini-files">Locate .ini files</h3>
121<h4 id="console-environment">Console environment</h4>
122<div class="sourceCode"><pre class="sourceCode bash"><code class="sourceCode bash">$ <span class="kw">php</span> --ini
123<span class="kw">Configuration</span> File (php.ini) <span class="kw">Path</span>: /etc/php
124<span class="kw">Loaded</span> Configuration File: /etc/php/php.ini
125<span class="kw">Scan</span> for additional .ini files in: /etc/php/conf.d
126<span class="kw">Additional</span> .ini files parsed: /etc/php/conf.d/xdebug.ini</code></pre></div>
127<h4 id="server-environment">Server environment</h4>
128<ul>
129<li>create a <code>phpinfo.php</code> script located in a path supported by the web server, e.g.
130<ul>
131<li>Apache (with user dirs enabled): <code>/home/myself/public_html/phpinfo.php</code></li>
132<li><code>/var/www/test/phpinfo.php</code></li>
133</ul></li>
134<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>
135<li>access the script from a web browser</li>
136<li><p>look at the <em>Loaded Configuration File</em> and <em>Scan this dir for additional .ini files</em> entries</p>
137<div class="sourceCode"><pre class="sourceCode php"><code class="sourceCode php"><span class="kw">&lt;?php</span> <span class="fu">phpinfo</span><span class="ot">();</span> <span class="kw">?&gt;</span></code></pre></div></li>
138</ul>
139<h2 id="fail2ban">fail2ban</h2>
140<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>
141<ul>
142<li><a href="http://www.fail2ban.org/wiki/index.php/Main_Page">Official website</a><a href=".html"></a></li>
143<li><a href="https://github.com/fail2ban/fail2ban">Source code</a><a href=".html"></a></li>
144</ul>
145<h3 id="read-shaarli-logs-to-ban-ips">Read Shaarli logs to ban IPs</h3>
146<p>Example configuration:</p>
147<ul>
148<li>allow 3 login attempts per IP address</li>
149<li>after 3 failures, permanently ban the corresponding IP adddress</li>
150</ul>
151<p><code>/etc/fail2ban/jail.local</code></p>
152<div class="sourceCode"><pre class="sourceCode ini"><code class="sourceCode ini"><span class="kw">[shaarli-auth][]</span><span class="dt">(.html)</span>
153<span class="dt">enabled </span><span class="ot">=</span><span class="st"> </span><span class="kw">true</span>
154<span class="dt">port </span><span class="ot">=</span><span class="st"> https,http</span>
155<span class="dt">filter </span><span class="ot">=</span><span class="st"> shaarli-auth</span>
156<span class="dt">logpath </span><span class="ot">=</span><span class="st"> /var/www/path/to/shaarli/data/log.txt</span>
157<span class="dt">maxretry </span><span class="ot">=</span><span class="st"> </span><span class="dv">3</span>
158<span class="dt">bantime </span><span class="ot">=</span><span class="st"> -</span><span class="dv">1</span></code></pre></div>
159<p><code>/etc/fail2ban/filter.d/shaarli-auth.conf</code></p>
160<div class="sourceCode"><pre class="sourceCode ini"><code class="sourceCode ini"><span class="kw">[INCLUDES][]</span><span class="dt">(.html)</span>
161<span class="dt">before </span><span class="ot">=</span><span class="st"> common.conf</span>
162<span class="kw">[Definition][]</span><span class="dt">(.html)</span>
163<span class="dt">failregex </span><span class="ot">=</span><span class="st"> \s-\s&lt;HOST&gt;\s-\sLogin failed for user.*$</span>
164<span class="dt">ignoreregex </span><span class="ot">=</span><span class="st"> </span></code></pre></div>
165</body>
166</html>
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