Iptables general help (more questions and answers the better)

[mycon]

This thread is for every one to colaberate on. I want more then just my questions asked and answered. for the noob's iptables is a bit daunting. I have ben using linux for quite a while but the manuals still are cryptic on some items, this is one.

I am trying to understand how to put the rules together.

I started with a script put together by...
# shadow999@firemail.de IPTABLES Firewall v 0.86

and have tryed to modify it to my need and done so unsucessfully..

I would be glad to know of a util to help out either webbased or console but understanding iptables is important to.


I was wondering if I got the syntax right for this.

Im attempting to allow a service located localy on the fwbox at port 3783.

$IPTABLES -A INPUT -i $EXTIF -p udp --dport 3783 -j ACCEPT
$IPTABLES -A OUTPUT -o $EXTIF -p udp --sport 3783 -j ACCEPT

also I needed an idea on how to adjust the tos on trafic from/to certin ports for either throughput or speed ie gaming ports 27015 etc..

Thanks for your help

[owensleftfoot]

Try the link below for console based iptables tools.
http://freshmeat.net/search/?q=iptab...by=&filter=226

[r3b00+]

Heres a couple of tutorial written by str34m3r which may be of some help to you

http://www.antionline.com/showthread...light=iptables

http://www.antionline.com/showthread...light=iptables

http://www.antionline.com/showthread...light=iptables

Hope this helps

r3b00+