[CentOS] Build a Firewall (Can I learn to do this...)

Ryan Wagoner rswagoner at gmail.com
Thu Oct 1 22:03:06 UTC 2009

You don't need to have Comcast route all traffic to that IP. You just
need to put two NICs in the server and place it between Comcast and
your servers. Then using iptables you can configure CentOS to deny /
allow traffic to IPs on specific ports. I know this is a CentOS list,
but if you want something with a webGUI have a look at pfSense. I use
this in front of my CentOS servers.


On Thu, Oct 1, 2009 at 4:56 PM, ML <mailinglists at mailnewsrss.com> wrote:
> Hi All,
> I have a home business circuit and I am gearing up to host my business
> affairs in my place. I have Comcast and 13 static IP's.
> I have an extra PIII 1U, 2 9gb SCSI, 1gb RAMm dual NICS.
> So I am wanting to build a firewall to front end my traffic. Assign
> one of my statics to it and have Comcast statically route my traffic
> to this IP. Then when traffic comes have it decide if it is allowed or
> not and if allowed pass it to the right server based upon the rules.
> I used to work with PIX 525's so I have knowledge, I just dont quite
> know how to do this with CentOS and such.
> Can anyone offer advice?
> Best,
> -Jason
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