Originally Posted by Daveyon
Hello. Im trying to setup a firewall in RHEL. Anyone can give me a "first-timer" howto guide? Iv heard about iptables in redhat, where can I find a GOOD tutorial of howto setup from start?
Here is a tutorial for RedHat
Which, if I remember correctly is pretty much the same as in 'The Linux Quick Notebook' by Harrison. I wouldn't describe this as a beginners tutorial necessarily, so isn't quite what you asked for, but it is good (note that while I describe this as 'for RedHat', in theory it should run on pretty much any Linux distro; the theory doesn't quite work, but if you saw a good tutorial for, say, debian, the iptables part should still work, just the details of how to instantiate your iptables rules at start up and other peripheral bits may not).
Yet further away from what you asked for is http://iptables-tutorial.frozentux.net/
but I regard this as the definitive item; look at this once you have at least skimmed through the other stuff.