<li><i>portnum</i>, <i>ip</i> or <i>nasport</i> and <i>nasnum</i> uniquely identify a port in the <a href="schema.html#port">port</a> database table.
</ul>
</ul>
+<h2>Callbacks</h2>
+<ul>
+ <li>Sesstion start - The command(s) specified in the <a href="config.html#session-start">session-start</a> configuration file are executed on the Freeside machine. The contents of the file are treated as a double-quoted perl string, with the following variables available: <code>$ip</code>, <code>$nasip</code> and <code>$nasfqdn</code>, which are the IP address of the starting session, and the IP address and fully-qualified domain name of the NAS this session is on.
+ <li>Session end - The command(s) specified in the <a href="config.html#session-stop">session-stop</a> configuration file are executed on the Freeside machine. The contents of the file are treated as a double-quoted perl string, with the following variables available: <code>$ip</code>, <code>$nasip</code> and <code>$nasfqdn</code>, which are the IP address of the starting session, and the IP address and fully-qualified domain name of the NAS this session is on.
+</ul>
+<h2>Dropping expired users</h2>
+Run <pre>bin/freeside-session-kill username</pre> periodically from cron.
</body>
-
-
-
-
-
-
+</html>