We've recently rolled out Windows XP SP2 to our remote users and have
enabled the XP Firewall on all network connections, including the VPN
connection to the main office.

We are now experiencing problems wherein users can't access PC's on the
remote domain by name, only by IP address, when connected via VPN. Turning
off the XP Firewall for the VPN immediately solves this problem - so the
issue appears to be with DNS lookup through the XP Firewall.

Is there a way to add an exception to the firewall to allow these lookups?
File and Print Sharing is enabled on all Firewall entries and incoming ICMP
exceptions are enabled.

I'm a little baffled as why this setup doesn't work, but would be grateful
for any advice from somebody with more experience of Firewalls! Am I wrong
to try and firewall the VPN connection in the first place?

Regards,