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<title>ProFTPD module mod_delay</title>
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<h2><b>ProFTPD module <code>mod_delay</code></b></h2>
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The <code>mod_delay</code> module is designed to make a certain type of
information leak, known as a &quot;timing attack&quot;, harder.

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When <code>proftpd</code> processes the <code>USER</code> and <code>PASS</code>
FTP commands from a client, it has to perform checks against configured
ACLs, look up user and gro