[Techtalk] Reverse DNS confusion

[Neven Grzancic]

I am pretty sure that you can. We have done it like this and it works fine.
Although if it doesn't, maybe you'll have to ask your ISP or whoever gave you
the IP block to do the reversing.

Still, I think it'll work just fine.

briskola

On Tue, 21 May 2002, Dushyanth Harinath wrote:

> 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
>