MSN Messenger 5.0 Primary connection MSN Messenger: TCP 1863 Oubound Secondary connection Voice and Video communications: UDP ports 5004 - 65535 send recieve File Transfer: TCP 6891-6900 Inbound/Outbound (to allow 10 simultaneous file transfers open ports 6891 through 6900) Application and Whiteboard Sharing: TCP 1503 Inbound/Outbound Remote Assistance: TCP 3389 Inbound/Outbound Ref: Windows Messenger in Windows XP: Working with Firewalls and Network Address Translation Devices: Solutions http://www.microsoft.com/WindowsXP/pro/techinfo/deployment/natfw/solutio ns.asp#solutions Windows Messenger in Windows XP: Working with Firewalls and Network Address Translation Devices http://www.microsoft.com/windowsxp/pro/techinfo/deployment/natfw/default .asp -----Original Message----- From: Adnan [mailto:adnan.ghouri@xxxxxxxxxxxx] Sent: Monday, June 16, 2003 10:09 AM To: [ISAserver.org Discussion List] Subject: [isalist] i have to block msn http://www.ISAserver.org how to disable MSN messanger service in ISA Server 2000. Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message.