how to configure ipchains

[emmons]

I think I have a problem with ipchains.
Where do I set the ipchains rules and how can I determine what the proper settings should be?

thanks for any info

 

[emmons]

ipchains -L

here is what displayed

Chain input (policy ACCEPT):
Chain forward (policy ACCEPT):
Chain output (policy ACCEPT):

does this mean ipchains is not blocking any packets?

 

[tarn]

Yes this means that either you have no rules in your firewall or ipchains is stopped.

Lets assume Red Hat 7.n you will probably have a file in /etc/sysconfig/ called ipchains? this would normaly hold the rules and you would start/stop ipchains (usually at boot but not allways especially if its a remote server, you could lock yourself out) with /etc/rc.d/init.d/ipchains {start, stop, status}

You can get a good idea of how to build a rule set from the following website and there are some good chain building tools there:

http://www.linux-firewall-tools.com/linux/firewall/index.html

Good Luck,
Laurie.