you will find iptables here
/etc/sysconfig/iptables
edit the file by using the gui on you desktop or as root
#system-config-securitylevel-tui
open the ports, input in the field
53:tcp 53:udp
you will find info about this in the system administration guide chapter 19
jim@xxxxxxxxxxxxxx wrote:
> Hi list. This is my first post here. Super newbie. I will try not to
> ask too many questions, but searching is hard when you don't even know
> where to begin. Hopefully someone can point me in the right direction.
>
> I have just installed CentOS 4.2. I selected to have a firewall in the
> graphic installer, and I opened ports 22 and 80. Fine so far. SSH and
> HTTP both work. But now that everything is set up I have discovered I
> need to open port 53 in order to install djbdns.
>
> My main question is: what did I install by choosing to have a firewall
> in the CentOS installer? Is this iptables? Or is it something else?
>
> And then if anyone just wants to give me the complete answer: how do I
> open port 53?
>
> Thanks!
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