Use of CGI:IRC
CGI:IRC is used by many IRC networks to provide a way for users to chat on their network from within their web browser. When used in this way, most of the functions are disabled for security reasons, i.e. the user is unable to connect to a different server, sometimes the channels that the user may join are restricted. Due to the nature of CGI:IRC, users are unable to use DCC.
What was a seemingly inconsequential implementation of the IRC protocol is increasingly being seen as a means to evade bans in IRC chat rooms. Several IRC servers have, as a consequence, developed an intolerance for CGI connections. Compounding this development is the fact that there does not exist a means to effectively distinguish between a CGI connection and a real IRC connection.
Some IRC servers may display the true hostname of the connecting client, most will only show the hostname of the CGI:IRC proxy. However, this does not offer much in the way of privacy, since the IP address of the user is hex encoded and included in the ident and/or real name. A simple perl script to decode the IP is included with CGI:IRC. Depending on how CGI:IRC is configured, it may also return the users true IP address (in addition to the HTTP headers) in response to a CTCP USERINFO request.
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