Dear Hari, There is no need to open any port for yahoo messenger. You simply do the following and ensure whether your requirement is fulfilled. Open Tools in internet explorer then internet options then advanced find the option called "Use HTTP 1.1" Under that you will find 2 options Check the options a) use HTTP 1.1 b) use HTTP 1.1 through proxy connections click ok close the explorer and try to login to yahoo messenger. Hope this will work. Shanthi ________________________________ From: KUMAR, Hari [mailto:Hari.KUMAR@xxxxxxxxxxxxxxxxxxxxxxxx] Sent: Sat 4/9/2005 11:18 AM To: [ISAserver.org Discussion List] Subject: [isalist] Open Yahoo messenger http://www.ISAserver.org Dear Friends, I'm facing problem with using yahoo messenger in ISA 2000 Please guide me to open ports for yahoo messenger (Chat, File transfer, Webcam, Voice chat) Thanks & Regards, Hari kumar ------------------------------------------------------ List Archives: http://www.webelists.com/cgi/lyris.pl?enter=isalist ISA Server Newsletter: http://www.isaserver.org/pages/newsletter.asp ISA Server FAQ: http://www.isaserver.org/pages/larticle.asp?type=FAQ ------------------------------------------------------ Other Internet Software Marketing Sites: World of Windows Networking: http://www.windowsnetworking.com Leading Network Software Directory: http://www.serverfiles.com No.1 Exchange Server Resource Site: http://www.msexchange.org Windows Security Resource Site: http://www.windowsecurity.com/ Network Security Library: http://www.secinf.net/ Windows 2000/NT Fax Solutions: http://www.ntfaxfaq.com ------------------------------------------------------ You are currently subscribed to this ISAserver.org Discussion List as: shanthi.p@xxxxxxxxx To unsubscribe visit http://www.webelists.com/cgi/lyris.pl?enter=isalist Report abuse to listadmin@xxxxxxxxxxxxx