VPN works but cannot use Internet Explorer

[ReflexiveArc]

Hi,

I am using a 2wire 1800hw DSL modem/router to connect to a win2k VPN server. The VPN connection works fine but if I'm connected to it, I can't get Internet Explorer to load any web pages. While connected, I can go to a command prompt and ping domain names so it doesn't seem to be a DNS issue. Plus, I can type in IP addresses in IE and it won't load the page either. But as long as I'm logged in to the VPN, IE will give me "Internet Explorer cannot load the search page".

I've tried flushing the DNS cache, using and not using WINS, using a domain controller running DNS as the primary DNS on the VPN connection as well as using a regular DNS server as the primary on the VPN connection, configuring the DNS server to do forwarding (which it already was), using/not using the default gateway on the remote network, using a proxy server, and some other combination I can't recall right now. The private subnet at the remote site *is* different from the private subnet at the VPN server's site.

If I do ipconfig /all at the workstation, the VPN connection does not show a default gateway but the LAN connection does (which seems correct). I can ping the local gateway from the workstation too - it just doesn't seem to work.

As soon as I log out of the VPN, I can load web pages fine.
When I'm logged into the VPN, I can use Outlook to connect to the Exchange server over the VPN just fine. I can't get Exchange IM to work, but that may be an unrelated issue. I'm almost out of troubleshooting strategies - I know IE works since I can disconnect the VPN and surf the net. Why is it that I can resolve domain names and ping from the command prompt yet IE won't work?

 

[mobyduck]

I had similar problems with admittedly a different setup, but it proved to be the VPN IP configuration - it was set to obtain an address by DHCP which also allocated it's own default gateway. As soon as I connected to the VPN, it dropped the existing link and allocated a gateway that was then unreachable...

Open the VPN Properties, check the Internet protocol tab and under advanced, make sure the 'Use Default Gateway on remote...." is unchecked.

Good luck..

 

[ChicagoTechNet]

quoted form

http://www.ms-mvps.com/

Can't access the Internet while using VPN

Symptom: after establishing a VPN connection, you may not be able to access the Internet because the VPN takes over your existing connection and all traffic to use the VPN default gateway on the remote network. The remote network may not allow VPN clients to access the Internet via their gateway.

Resolutions:
1) If you don't need to access the entire VPN resources, disable the "use default gateway on remote network" option in the properties of the VPN connection. To do that, go to VPN Connection->Properties->Network->TCP/IP->Properties->Advanced-, uncheck "Use default gateway on Remote Network".
2) Edit route table manually if you know how to or check routing page on this web site.


Robert Lin, MS-MVP, MCSE & CNE
Windows, Network, Internet, VPN, Routing and How to at

http://www.ms-mvps.com

 

[ReflexiveArc]

Use default gateway on remote network is unchecked, that's what's confusing. Are you saying to edit the routing table in the 2wire?

 

[ReflexiveArc]

Use default gateway on remote network is unchecked, that's what's confusing. Are you saying to edit the routing table in the 2wire?