On Tue, Mar 11, 2003 at 07:49:16AM +0100, n/a wrote: > Hello there, > > For the past couple of days i've been looking into setting up an old pc as a > firewall/router for a couple of students. > > To do so i enabled iptables and started looking into configuration issues. > Eventually i came up with a config that worked. haha. Then i realised this > config was fishy and started deleting lines as i went along. Now almost no > lines are left and the darned thing still works even after reboots, > re-loads, restarts. > > Apparently there's something i'm not getting thru my thick skull about > packet filtering. Could someone explain to me in text (no diagrams) how a > packet is evaluated and then processed tru the chains, also what is done and > not-done any more after a packet has passed thru a chain. Somehow i have the > idea this config works from the lan to the outside but not from the outside > to the lan or something. > > Any good resources, tips, explanations are welcome. I'm to dumb for this i > guess. > > Regards, > > Joris >
[snip iptables -L outputs] I found Rusty's HOWTOs in /usr/share/doc/iptables/html/ to be useful when I was starting with iptables. Try the packet filtering HOWTO first. (Love that "4. Who the hell are you, and why are you playing with my kernel") As Mike mentioned earlier, the ipmasq package is good for managing iptables. Graeme -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
