XP SP2 Firewall is incorrectly using "non-domain" group policy firewall settings
Posted on 2006-06-15
Windows 2003 AD environment. XP SP2 clients. Domain and non-domain firewall settings defined in group policy for these clients.
In my research I found that the following registry value is blank on the clients:
Since this value doesn't match any connection specific DNS suffix, the system thinks that it isn't connected to the domain network, and uses the non-domain firewall settings.
Ipconfig shows the correct connection specific DNS suffix on the Ethernet interface. The interface is configured for DHCP and the DHCP server assigns the DNS domain name using DHCP option 15.
If I set the NetworkName value in the registry, it gets changed back to blank when I do a gpupdate.