[CentOS] Re: Firewall frustration

Tue Jan 1 18:01:49 UTC 2008
Ugo Bellavance <ugob at lubik.ca>

Robert Moskowitz wrote:
> Firewall is up and running.
> 
> Used Shorewall with Webmin.
> 
> Les Bell wrote:
>> Robert Spangler <mlists at zoominternet.net> wrote:
>>
>>   While IPTABLES might be CHEAP (price) it is a very good firewall.
>> Learn to set it up from the command line, it isn't that hard.
>> <<
>>
>> Amen. I've been using CentOS for firewalls here for a long time now, with
>> hand-written rules. Besides, generic firewall configuration tools don't -
>> can't - know about many of the more advanced modules and features of
>> iptables.
> I spent much of the past 24 hours trying to find out how to set up 
> iptables for firewall routing WITHOUT NATing. Could not find anything.
> 
> So I decided to try out shorewall, which has a front end in Webmin. The 
> 'nice' thing about this was as I built a portion of Shorewall (say the 
> zones), I could sue the Webmin edit the conf file directly to see the 
> 'raw' config file and looky there, a URL for a help page!
> 
> Taking it slow, I got Shorewall up in about 1 hour.
> 
> But I have questions for the Shorewall people. They talk about iptables, 
> then netfilter. The site says that Shorewall is not a deamon. Well I see 
> a Shorewall service running. Can't see that is using any cpu cycles or 
> how much memory. The iptables have the same content they had when I used 
> the upstream's tool at Centos install time to set up basic 'firewall' 
> features. So what gives....

There is also an iptables 'service', that doesn't mean there is a 
deamon.  It is a simple way to start the firewall at boot time.

Have you checked m0n0wall/pfsense livecd?