On Mon, 20 Sep 2010, Ausmus, Matt wrote:
To: CentOS mailing list centos@centos.org From: "Ausmus, Matt" mausmus@chapman.edu Subject: Re: [CentOS] iptables
When I was first learning iptables, I found "Rusty's Remarkably Unreliable Guides" to be an excellent resource on how iptables works. He covers each part of iptables and does it in a clear and easy to understand manner. If I remember correctly, the guides are also entertaining.
http://people.netfilter.org/~rusty/unreliable-guides/
I personally don't like any of the GUIs out there. I find them to be way to constricting compared to the sheer power and flexibility of iptables. You're better off going through the guide and googling and then just writing your rules in a text editor.
Yes, I agree.
I have my own iptables rules in a bash shell script to replace the RH ones at boot time.
I also found Rusty's tutorials entertaining, and easy to understand. Plus there's the man page, 'pinfo iptables' that is quite concise.
Here's a nice description of CIDR address notation.
http://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing
Kind Regards,
Keith
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