Configuration from the Ubuntu Server Guide by OnWorks

There are many ways to configure BIND9. Some of the most common configurations are a caching nameserver, primary master, and as a secondary master.

• When configured as a caching nameserver BIND9 will find the answer to name queries and remember the answer when the domain is queried again.

• As a primary master server BIND9 reads the data for a zone from a file on it's host and is authoritative for that zone.

• In a secondary master configuration BIND9 gets the zone data from another nameserver authoritative for the zone.