Hope someone can help with this.
I have a new ISA 2006 Installation on W2k3.
The ISA server all looks to be working without issue. (Blocking and enabling require traffic.) The only problem I have is when I try to add users using the windows Users and groups option.
I am able to browse AD for the OU and can Find the Security group that I require. (Same issue for a user.) Yet once I click OK in the select user and groups windows the whole system locks up for 5 min then returns "The RPC server is unavailable."
I have found that if I disable Microsoft Firewall and they select the group that this works without an Issue. I can then enable Microsoft Firewall and every thing works as expect for about 15min. After that the system is unable to refresh the security group and access is stopped.
I did find and Artical that said to disable "EnableRSS" and I have done this on the ISA system. See below for artical.
Also I create a rule to allow all traffic from ISA to AD server yet still failed to resolve the issue.
Any suggestion would be appriciated.