We have a Windows Small Business Server and a fairly simple network with the SBS doing DNS, AD, Exchange, SQL, etc. All clients on the network use the SBS as their internal gateway. The SBS is connected to a hardware firewall device and then to our T-3.
We need to use a Remote access VPN connection to our parent company's network via the Cisco VPN client. I have opened the proper ports within ISA and our hardware firewall/router to allow for the traffic. I can make the connection and it stays active, however DNS is not resolving to the parent company's internal network.
IPCONFIG /all on one of the clients shows the VPN connection and the proper dns server at the remote location, but it wont use the remote DNS server and falls back to the DNS address of my local SBS(10.10.1.1). When you try and browse a remote website on their internal network, ie. 'https://intranet," you get a proxy error from ISA.
I know very little about the network to which I am connecting other then the IP that I was given to place in the Cisco VPN Client software.
Any ideas on how to allow these VPN Connections to use the remote site's DNS server?
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
Table of Contents Introduction:This document describes details on how
NAT-T works. Background: ESP encrypts all critical information,
encapsulating the entire inner TCP/UDP datagram within an ESP header.
ESP is an IP protocol in the same sense that TCP an...