Configure DNS on ASA

Use this procedure to configure a domain name server (DNS) on each of your ASAs.

Prerequisites

  • The ASA must be able to reach the internet.

  • Before you begin, gather this information:

    • The name of the ASA interface that can reach the DNS server; for example, inside, outside, or dmz.

    • The IP address of the DNS server your organization uses. If you don't maintain your own DNS server, you can use Cisco Umbrella. The IP address for Cisco Umbrella is 208.67.220.220.