[CentOS] DNS or firewall problem

[Thomas Dukes]

> -----Original Message-----
> From: centos-bounces at centos.org 
> [mailto:centos-bounces at centos.org] On Behalf Of Christopher Chan
> Sent: Monday, July 05, 2010 8:42 PM
> To: centos at centos.org
> Subject: Re: [CentOS] DNS or firewall problem
> 
> On Tuesday, July 06, 2010 08:12 AM, Thomas Dukes wrote:
> >
> >
> >> -----Original Message-----
> >> From: centos-bounces at centos.org
> >> [mailto:centos-bounces at centos.org] On Behalf Of Cliff
> >> Sent: Monday, July 05, 2010 8:05 PM
> >> To: CentOS mailing list
> >> Subject: Re: [CentOS] DNS or firewall problem
> >>
> >> Do u have ipv4 forwarding on in your /etc/syscttl
> >>
> >> Sent from my iPhone
> >
> > Uhhh, in /etc/sysctl.conf,
> >
> > net.ipv4.conf.ip_forward = 0  ??
> >
> > change to = 1 ??
> 
> Are you running a proxy for http? It would be rather 
> surprising that internal machines can access the Internet 
> without forwarding turned on otherwise. When you say internal 
> machines cannot access your server, are they connecting to it 
> via the local interface's ip or the Internet ip? 
> Are the services bound to the local interface?


I did notice today there is a squid.conf file in my /etc/httpd/conf.d
directory. It appears it is configure for the local domain only.  I renamed
it and restarted apache but that didn't work.

The server has two nics, one for internet and one for the local network,
connected to a switch. eth0 is connected to the uplink port.