How to block IM

"Flavio C. Prado" <fprado-w57cjQFVChNwFqzsTH5u/[email protected]> Wed, 23 Jun 2004 16:12:20 -0300
Newsgroups gmane.linux.admin.managers
Message-ID <126101c45956$028fe220$2001a8c0@flavio>
Hello everyone,

I would like to block in my company firewall the use of IM and file sharing
programs. I already know which ports to block, (thanks to this site:
http://testweb.oofle.com/messaging/MSN/index.htm) but I can't get it to work
in my iptables setup. Anyone here has done this before?

Regards,

Flavio C. Prado
fprado-w57cjQFVChNwFqzsTH5u/[email protected]
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