You need to set up a protocol definition, port no. 4661 tcp outbound, and use secondary connections of 4664,TCP,Outbound, 4665 UDP,send, and then a protocol rule using these protocols, restart the isa server. HTH Steve Steve Moffat Senior Support Analyst Optimum Computer Solutions Tel : +44 (0)141 586 5296 Mobile : +44 (0)7711 074 605 steve@xxxxxxxxxxxxxxx http://www.optimum.mine.nu