Domain Name Resolution Issue. Select Start point to Programs or All Programs point to Administrative Tools and then select DNS. Domain Name Resolutions As discussed above Domain Name Resolution is the task of converting domain names to their corresponding IP address.
Make sure the VPN server PIX Firewall Cisco VPN Concentrator or a router successfully assigns a DNS server IP address to the Cisco VPN Client. DNS servers have failed. This issue occurs because the authoritative server for the website has both a start of authority SOA record and a CNAME record on the website.
Select Start point to Programs or All Programs point to Administrative Tools and then select DNS.
Disputes over domain names on the Internet. DNS servers have failed. Many apparent connectivity problems are actually name resolution problems. In general you should start with client-side troubleshooting unless you determine during the scoping phase that the issue is definitely occurring on the server side.