Step 3 – Change the DNS Settings on Your Relevant Network Device
You only need to change the DNS settings on your edge DNS equipment, typically a DNS or DHCP server, or a router—a DSL router or cable modem if that's the only router in your network. For information about how to configure devices including laptops or routers, see Point Your DNS to Cisco Secure Access.
Note: The device where you test the network must have retrieved a new set of DNS servers from the DNS/DHCP server or router, or you must change the device's DNS settings manually before verifying the configuration of the network resource.