Problem with DNS Lookup behind XP Firewall - microsoft.public.windowsxp.work_remotely

Message from discussion Problem with DNS Lookup behind XP Firewall

Robin Walker

View profile

More options 4 Jan 2005, 18:09

Newsgroups: microsoft.public.windowsxp.work_remotely

From: "Robin Walker" <r...@cam.ac.uk>

Date: Tue, 4 Jan 2005 18:09:19 -0000

Local: Tues 4 Jan 2005 18:09

Subject: Re: Problem with DNS Lookup behind XP Firewall

  Reply to author
  |
  Forward | Print | View thread
  | Show original
  | Report this message | Find messages by this author
  

Richard Tubb wrote:
> 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.

My guess is that this is not a DNS problem, but a NetBIOS one. DNS lookups
are not blocked by Windows Firewall.

Maybe you should check that the "scope" of the File & Print Sharing
Exception in Windows Firewall includes explicitly:
(a) the subnets in use in your office LAN;
(b) the subnet ranges you allocate for VPN connections.

Do not rely on the default "My network (subnet) only" scope.

--
Robin Walker
r...@cam.ac.uk

Reply to author Forward