Setting Up the named.local File

The named.local file sets up the local loopback interface for your name server.

Example 5–18 Sample named.local File

$TTL 5h
; SOA rec
0.0.127.in-addr.arpa. IN SOA sirius.doc.com sysop.centauri.doc.com (
                          1997071401       ;  serial number (YYYYMMDD##)            
                           10800           ;  refresh every 3 hours
                           10800           ;  retry every 3 hours
                           604800          ;  expire after a week
                           86400 )         ;  TTL of 1 day
; Name Servers
0.0.127.in-addr.arpa.      IN  NS     sirius.doc.com
1                          IN  PTR  localhost.
 

A named.local file contains these elements:

• A default TTL (time-to-live) for all records in the file that do not have an explicit TTL set

• A Start of Authority (SOA) record

  The SOA record indicates the start of a zone and includes the name of the host on which the named.local data file resides.

• One or more Name Server (NS) records identifying master and slave DNS name servers

  Server and domain names should be fully qualified.

• A PTR record for localhost