[CentOS] CentOS 4 DNS Server not listening

[Stephen John Smoogen]

On 4/4/07, Michael Barnes <mbarnes at srnradio.com> wrote:
> I installed CentOS 4 on a new box to use as a DNS server.  It is a basic
> server install.
>
> I configured named and it is all up and running fine.  It just isn't
> listening on Port 53.  It also (obviously) does not respond to DNS
> requests.  Requests from the machine itself are processed just fine, so
> the service is working.  It just can't be used by other machines.  Not
> good for a public DNS server.
>
> I did install and turn on SELinux.  Maybe that was a mistake?  I've not
> worked with SELinux before.
>

Sounds like the default firewall is also turned on. The SElinux
policies on this service would affect things both locally and
remotely. Since local host/dig requests work, it sounds like the
iptables is not allowing remote 53 tcp/udp packates


-- 
Stephen J Smoogen. -- CSIRT/Linux System Administrator
How far that little candle throws his beams! So shines a good deed
in a naughty world. = Shakespeare. "The Merchant of Venice"