just starting today i started getting this message when connecting to

certain Efnet IRC servers. Banned: Open Proxy found on your host.
Please
visit www.blitzed.org/proxy?ip=xxx.xxx.xxx.xxx for more information.

any ideas, do i really have an open proxy and if so is there any
documentation on securing it. I'm in dire need of some seriuos
answers.

Thank you,
Vince