Damn....I had the same problem but I can't remember how I fixed it (I don't use NIS anymore). Try this link: http://www.cewindows.net/faqs/symatec-firewall.htm it describes a technique for Activesync. Instead of the Activesync executables use svchost.exe. That maybe how I did it. Also check the Intrusion Detection settings to make sure your allowing yourself access. Good luck again.