Setup Ubuntu DNS Cache Server

This post is how to setup a DNS Cache Server. This configuration uses Google DNS as the forwarder and allows access from clients that have the IP in the scope of 192.168.0.0/16.

1. Install the BindDNS package
   • sudo apt install bind9
2. Edit the /etc/bind/named.conf.options file editing the Forwarders as follows.
   • forwarders {8.8.8.8;};
3. Edit the /etc/bind/named.conf.options file adding access for remote DNS lookups.
   • recursion yes;
   • allow-recursion { 192.168.0.0/16;};
4. Restart the BindDNS Service
   • sudo systemctl restart bind9.service