[Techtalk] Reverse DNS confusion
Dushyanth Harinath
dushy at symonds.net
Tue May 21 13:42:02 EST 2002
Hi folks,
Iam having a small doubt regarding Reverse DNS setup. The issue is
something like this.
My ISP has assigned me a block if IP's say from the network
192.168.1.0/27. My block of IP's are 192.168.1.32/27 . Now i have setup
forward DNS and i have no problem understanding that. But iam stuck with
reverse DNS. I have created a reverse zone 1.168.192.in-addr.arpa and
gave the PTR records to my hosts in the zone file. Is this ok ?. Can i
create a reverse zone for entire 192.168.1.0/27 ?.
Below is named.conf for bind9.1.3.
//named.conf
options {
directory "/var/named";
listen-on { 192.168.1.33; };
allow-recursion {192.168.1.32/27;};
};
zone "." {
type hint;
file "named.ca";
};
zone "0.0.127.in-addr.arpa" {
type master;
file "named.local";
};
zone "archeanlabs.net"{
type master;
file "forward";
};
zone "1.168.192.in-addr.arpa"{
type master;
file "reverse";
};
forward and reverse file contain the forward and reverse mappings and
they work well.
The IP's i have given here is from a fictional network, actually we have
a block of routable IP's. We have our web servers, mail server etc
running and now we want to have our own DNS servers for our block. For
that i have created to host records ns1.test.com and ns2.test.com at
netsol pointing to our DNS server's. So can i create a reverse zone for
the entire network like specified above and give PTR records to only the
hosts in my block or is there any other procedure to follow ?
Am i confused here ?
TIA
dushyanth
--
In a world full of people only some want to fly, Isn't that crazy
- Seal
Dushyanth Harinath
http://www.archeanit.com
http://symonds.net/~dushy
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