DNS resolution through VPN tunnel

[lehan66]

just setup a B2B VPN tunnel between our company and headquarters. All employees access a special corporate public web-portal which can be accessed from anywhere on the internet. One of the links on the portal, let's call it "acct.company.com" points to an accounting server and only works if the computer trying to access it is on a secure network over the VPN tunnel. Otherwise the user will get a page cannot be displayed. On our tunnel rules, we allow access to this accounting server by its IP, (10.55.55.1).

The problem is if a user click on the accts link, the web page resolves to "acct.company.com" which does not go through the tunnel and it fails. If I replace the "acct.company.com" with the server IP 10.55.55.1, it works. I am sure I need to created a record on our DNS server (Windows 2003 AD) but not sure how and if it will work through the tunnel.

Any help would be appreciated. Thanks!

 

[elgrandeperro]

Which DNS server do they use when tunneled? This seems to be a typical problem where the tunnel is "split" but DNS not.

 

[lehan66]

I am not sure what DNS server they use, must be their internal servers. Its a very large org so its almost impossible to find out what they use. all I know is that they use a PIX firewall for the tunnel. We are using Check Point. Any suggestions of a way to get around this on our end of the tunnel? Do you think the solution is a DNS record or something on the firewall? Thanks.