</li>
<li><code>proxy-start-sessions=yes|no</code> should be disabled if only
existing sessions should be accessed via the proxy server</li>
<li><code>daemon</code>, <code>chdir</code>, <code>pidfile</code>,
<code>log-dir</code> and <code>log-file</code>: the server's filesystem
context</li>
<li><code>remote-xpra</code> the command executed from client SSH
connections</li>
<li><code>source=SOURCE</code> and <code>env=ENV</code>: anything that
modifies the server's environment variables can potentially be us