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How can I block only Yahoo Messenger with ISA server?

Retired Expert - Joel _Johnson EXPERT RESPONSE FROM: Retired Expert - Joel _Johnson

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QUESTION POSED ON: 29 July 2003
How can I block only Yahoo Messenger with ISA server?

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EXPERT RESPONSE
Yahoo uses http. You will need to block access to their servers. Here is the current list from yahoo:
  • Protocol: TCP or HTTP
  • Servers:
    scs.msg.yahoo.com
    scsa.msg.yahoo.com
    scsb.msg.yahoo.com
    scsc.msg.yahoo.com
  • Port: 20,23,25,80,119,5050,8001,8002


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