Setup Internal caching DNS Server

[Paul Howarth]

Fernando Gozalo wrote:
>>On Tue, 2005-11-08 at 16:07 -0500, Ki Song wrote:
>>
>>>WHere can I get information on how to setup an internal caching DNS? Is
>>>there a HOWTO or a tutorial on how to do this?
>>
>>All I remember having to do is install BIND (and any dependencies it
>>asked for), and "caching-nameserver".
>>
>>I have these packages installed:
>>
>>bind-chroot-9.3.1-14_FC4
>>bind-libs-9.3.1-14_FC4
>>bind-9.3.1-14_FC4
>>bind-utils-9.3.1-14_FC4
>>caching-nameserver-7.3-3
> 
> 
> With this you have a working cahe nameserver. No need more config.
> 
> But I think I improve the caching-nameserver when I edit
> /var/named/chroot/etc/named.conf and add in the options section:
> 
>         forward only;
>         forwarders {
>                 IP.of.my.first.real.nameserver;
>                 IP.of.my.second.real.nameserver;
>         };

It depends on how good/reliable these nameservers are. Many ISP DNS 
servers have problems from time to time, and by forwarding all requests 
to them, you'd inherit those problems yourself. My preference would 
normally be to let the caching nameserver handle everything itself, so 
that if there was a problem, it could be isolated to my own nameserver 
and hence probably be easier to diagnose and fix.

Paul.