Check this link for the IANA assigned numbers, and other non-IANA registered numbers: http://www.sockets.com/services.htm RealPlayer/RealAudio is very hard to filter because it can be configured to run over TCP port 80 (HTTP). So there ya go, Evan -----Original Message----- From: Chris Sweeting [mailto:[EMAIL PROTECTED]] Sent: Friday, February 09, 2001 9:23 AM To: [EMAIL PROTECTED] Subject: > Question I > am trying to find an updated listing of all udp and tcp ports so I can > write an access list to block Real Audio, or is Real audio using port 80. > Or is there a better way ? Write me back at this address thanks _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] _________________________________ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]