We are running an ISA 2006 server and PPTP VPN connection works fine. Clients are able to connect to internet, access Outlook, CRM, etc. The problem we are encountering is that host name resolution is not working.
Example, when connected via VPN I can’t ping any box other than the VPN server by the host name. Nslookup also fails. I can ping everything fine via IP address. But for clients, they need to be able to access their “mapped” drives over the VPN which all are mapped by host name.
I recently took over this position and it sounds like this used to work. What would be the best place to check first? I haven’t had much exposure to ISA and have been reading up a bit on installation procedures, etc.
DNS is hosted and running on our domain controller, as well as WINS. It isn’t on the ISA box.
Is there a firewall policy that perhaps got removed? What usually is required for host name resolution to pass through.
Both DNS name servers (Domain Controller 1 and 2) are being properly set on the VPN clients, so it is strange they they can't resolve the host names. If I do an nslookup on an IP address over the VPN, they resolve correctly to the Domain Controller. But by host name, it fails.
Thanks for any help.