[CentOS] Security help desperately needed - more info

[Anne Wilson]

On Thursday 07 February 2008 15:14, Ross S. W. Walker wrote:
> I would look at the DNS setup to make sure all host names are resolvable,
> maybe the /etc/hosts file isn't setup properly. Make sure smb ports are
> open inbound and outbound in iptables and the latest selinux profile is
> installed.

/etc/hosts is fine.  All possible connections on the lan are correctly 
defined.  dns resolution is via my isp, and again the IP addresses are 
correctly set.  That leaves the security settings, where I believe the 
problem is.  So, let's start with iptables.  I've never worked directly with 
iptables before.  I use shorewall when I set up the older server, a long time 
ago.  /usr/share/doc/iptables... doesn't help.  Does that mean that the man 
pages are the only help?  Googling, I suppose.  Any particular documents 
recommended?

SELinux can wait until this is sorted.

Anne