man nullidentd (Administration système) - a bare minimum identd server


nullidentd - a bare minimum identd server


nullidentd [uid]


This manual page documents briefly the nullidentd command. This manual page was written for the Debian GNU/Linux distribution because the original program does not have a manual page.

Nullidentd is intended to be a bare minimum identd server, suitable for a firewall or IP Masq/NAT gateway.


nullidentd takes only one optional argument, the username to answer with. If this is omitted, nullidentd will reply with the username “foobar”. If the username is RANDOM, a random string is generated.


nullidentd is typically invoked from inetd. The following is a typical inetd.conf example:

auth stream tcp nowait nobody /usr/sbin/nullidentd nullidentd


nullidentd is written by Brian Young <>

This manual page was written by John H. Robinson, IV <>, for the Debian GNU/Linux system (but may be used by others).