Re: reverse DNS resolution...

Eric F Crist wrote:
Hey folks,

We're trying to get reverse DNS resolution for a block of IPs
(private). We've had the 10.x network working great at the office
for quite some time now, but I'm having a problem getting the
172.30.x network to work.

Typing 'host <ip>' returns a valid result, however output from who,
as well as other network services (IRC, apache) only see the IP. Is
there something I'm missing?

Thanks for the pointers!
Well, your DNS needs to be authoritative for both forward and reverse.
If you are trying to do this for less then a /24 block the zone files
get messy quick because of the 8bit boundaries. You seem to be trying
to do this for a /16. I'll bet you're missing the named.conf entries
and related reverse zone files:

Odds are you'll want to have zones:

zone "1.30.172.in.addr.arpa" {
type master;
file "master/1.30.172.in.addr.arpa
notify yes;
}
....
zone "255.30.172.in.addr.arpa" {
;; or slave config since you'll have more than 1 ns
type slave;
file "slave/255.30.172.in.addr.arpa";
masters { x.y.z.a; };
}

Or some larger splits of that.

You're going to have give me a netmask for more help.


$ORIGIN .
$TTL 3600 ; 1 hour
0.28.172.in-addr.arpa IN SOA ns1.rws. admin.Z. (
2007101800 ; Serial
10800 ; refresh (3 hours)
3600 ; retry (1 hour)
3600 ; expire (1 hour)
86400 ; minimum (1 day)
)
NS ns1.Z.
$ORIGIN 0.28.172.in-addr.arpa.
1 PTR router.Z.
......



--
------------------------------------------------------------------------
Philip M. Gollucci (philip@xxxxxxxxxxxxxx) c:323.219.4708 o:703.749.9295x206
Senior System Admin - Riderway, Inc.
http://riderway.com / http://ridecharge.com
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