The PEAR::Net_Ident implements Identification Protocol according to RFC 1413. The Identification Protocol (a.k.a., "ident", a.k.a., "the Ident Protocol") provides a means to determine the identity of a user of a particular TCP connection. Given a TCP port number pair, it returns a character string which identifies the owner of that connection on the server's system. WWW: http://pear.php.net/package/Net_Ident/