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How to configure DNS for Cisco VPN Clients on the PIX/Adaptive Security Appliance (ASA)

What is DNS?

The DNS (Domain Name Servers) is used to maintain a relationship between IP addresses and domain names. DNS is a set of database servers which is used to maintain the relationship between IP addresses and domain names and help in the lookup between the two. Computers use the DNS system to electronically transmit data with other computers through the internet.

Resolution

In order to configure an internal or external Domain Name System (DNS) server for Cisco VPN Clients on the PIX/ASA, complete these steps:

  1. Access the device using the CLI and go to configuration mode.

  2. Enter the config-group-policy mode for the VPN Client using the group-policy  attributes command.

  3. Configure the DNS server using the dns-server  command.

  4. Exit out of the configuration.

For information on how to configure the Cisco VPN Client to ASA, refer to the Summary of the Configuration section of Configuring Remote Access VPNs

In order to resolve Cisco VPN Client problems with name resolution on the PIX and VPN Concentrator, refer to How to resolve Cisco VPN Client problems with name resolution.

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