Which is the chain name in iptables

dkn4a1 · 09-18-2008, 04:34 AM

Hi all,

i hav queued a lot rules in my iptable.
and i want to replace one.
i have found that i can do so with
iptables -E
but sytax is -E old-chain-name new-chain-name

what is the chain name in iptables?

plz help i dont wish to flush all the things.

any help will be appreciated.

born4linux · 09-19-2008, 04:34 AM

chain name, is the one that comes after the word "Chain"
when you run "iptables -L", like:

Chain FORWARD (policy ACCEPT)
...
...
...

jlinkels · 09-20-2008, 09:03 AM

The best way to maintain iptables is to build a bash script which enters iptables rules one by one.
It is much easier to do than printing out the current rule set and making changes, especially if the number of rules get larger than 30 or so.
With the script you start by flushing everything, and you are sure you enter into iptables exactly what is in your script.

jlinkels

sundialsvcs · 09-21-2008, 08:39 PM

(Shrug...) For better or worse, I use Shorewall.

Anyhow: a "chain name" is basically just a moniker. It's a way to name and group rules.

dkn4a1 · 09-22-2008, 05:23 AM

tahnx all...
i got it