This chat programs uses any available ports. You cant deny them by ports. Just leave the ports patient.
You'll need block access to their master servers. I know some of them. Exam: yahoo. 216.136.130.46/24 216.136.173.179 216.136.175.132 216.136.175.143 216.136.224.215 216.136.225.011 216.136.227.168 216.136.233.130 216.136.233.132 You can obtain these ip by using "netstat" -ing on testing PC. or search by google. good luck. from Mongolia. -----Original Message----- From: KEN MORRIS [mailto:[EMAIL PROTECTED]] Sent: Thursday, February 21, 2002 12:31 AM To: [EMAIL PROTECTED] Subject: Best means to block MSN Messenger, AIM and other chat programs? Hello, I am using both filtering software and Firewall (GNat Box) to try to block out the use of several chat programs. On the FW I have blocked ports: 4000 - ICQ 1863 - MSN Messenger 5050 - AOL and 5190 for Yahoo After having set up the blocking rule, I then tested MSN Messenger in the system. Problem being that it was still accessible. Any suggestions as to how to block the use of the programs at the firewall would be greatly appreciated. Thank you Ken Morris
