This usually only happens with laptops that use different ISP connections while they are travelling. Mine does it once in awhile but I usually flush the dns. I've been reading a lot of posts on here regarding vpn and dns issues but I'm still trying to pinpoint where the problem resides.
O/S: Windows 7
Problem: Internal names cannot be resolved
The Fortigate is setup to dish out DNS IP's to the incoming connection. Once connected I can ping the internal IP's. Internal server names cannot be resolved. ie Bringing up an internal webpage using http://myserver/default.aspx
won't work but replacing 'myserver' with the IP works fine.
This seems to happen on certain cable ISP's. Rogers is a nasty one for doing this but Bell you would have no problem with. Do cable providers do something so that they force you to always use their DNS servers first? Is there a way to force my internal DNS servers to be used while connecting through the VPN? This is a pain!!