[CentOS] Yes another "I can't open port 53 for Bind DNS"

[Gordon Messmer]

On 02/01/2012 12:14 AM, Shane Bywater wrote:
> I'm not using iptables (well I didn't configure any)
>
> [root at tribe log]# iptables --line-numbers -n -L
> Chain INPUT (policy ACCEPT)
> num  target     prot opt source               destination
> 1    ACCEPT     all  --  0.0.0.0/0            0.0.0.0/0           state
> RELATED,ESTABLISHED

You should figure out who/what did, then.  Those rules don't look like 
they were created by Red Hat's tools (where you'd see RH-Firewall...), 
and won't be present by default.  Something created rules and the rules 
don't allow access to TCP or UDP 53 (you need both).

For now, just flush the rules: iptables -F INPUT