Try this (also for Morpheus): ISA server Policy Elements Protocol definitions make a new protocol: Morpheus Inbound Port number 1214 Protocol type TCP Direction Inbound secondery connection yes Port range from 4000 to 5000 protocol type TCP direction Inbound make a new protocol: Morpheus Outbound Port number 1214 Protocol type TCP Direction Outbound secondery connection yes Port range from 4000 to 5000 protocol type TCP direction Inbound go to: Acces Policy Protocol rules Open your current rule goto the tab Protocol turn your Morpheus Inbound and Morpheus Outbound on Hi, Can anyone tell me how to get Kazaaa working behind ISA I've read a few of the previous posts but nothing seems to have worked.