http://msmvps.com/blogs/bradley/archive/2007/01/16/isa-rules-in-the-wrong-place.aspxhttp://simultaneouspancakes.com/Lessons/2007/01/15/isa-and-dhcp/ When you start using ISA to restrict things... be careful about restricting too much..... Depending on where you put that ISA rule set you could end up shutting off DHCP services as a resultenCommunityServer 2008.5 SP2 (Build: 40407.4157)