named

[Bill Gradwohl]

Giuseppe Greco wrote:

>Hi all,
>
>I use named for resolving the names of my internal
>hosts... and it works fine.
>
>Just a question: why should I also create the
>1.168.192.in-addr.arpa.zone file (192.168.1.0/24)?
>What should its content be?
>
>Thanks,
>j3d.
>
>  
>
in-addr.arpa is for reverse lookup. If you want to reverse resolve 
192.168.1.123 to some box, then you need the in-addr.arpa to accomplish 
this. If you don't want reverse resolution, then you don't need it.

However, lots of services will want to reverse resolve IP addresses, so 
its's a good idea to implement it.

Here's a sample:

$ORIGIN .
$TTL 86400      ; 1 day
168.168.192.in-addr.arpa IN SOA ns1.somedomain.xyz. bill.somedomain.xyz. (
                                401041028  ; serial
                                28800      ; refresh (8 hours)
                                7200       ; retry (2 hours)
                                604800     ; expire (1 week)
                                86400      ; minimum (1 day)
                                )
                        NS      ns1.somedomain.xyz.
                        NS      ns2.somedomain.xyz.
$ORIGIN 168.168.192.in-addr.arpa.
1                       PTR     firewall.somedomain.xyz.
10                      PTR     w2ksrvr.somedomain.xyz.
11                      PTR     wntsrvr.somedomain.xyz.
12                      PTR     wxpsrvr.somedomain.xyz.


-- 
Bill Gradwohl
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