Re: How to find the chain which calls the match

["Gáspár Lajos" <swifty@freemail.hu>]

aoliva írta:
> Sorry if you receives multiple copies,
>
> Hi all, I am writing a match for iptables and I would like it to have 
> a different behaviour when it is called from different chains (e.g. 
> different behaviour when called from INPUT than OUTPUT) anyone knows 
> how to check in the match which is the chain that is calling it?
>
> Thanks in advance.
>
> Antonio de la Oliva
>

I DO NOT THINK THAT IT IS A GOOD IDEA OF USING IPTABLES THIS WAY,
but anyway try this:

iptables -A INPUT -j MARK --set-mark 1
iptables -A INPUT -j mychain

iptables -A OUTPUT -j MARK --set-mark 2
iptables -A OUTPUT -j mychain

iptables -A FORWARD -j MARK --set-mark 3
iptables -A FORWARD -j mychain

iptables -A mybehaviour1 -j DROP

iptables -A mychain -j mybehaviour1 -m mark --mark 1 //INPUT
iptables -A mychain -j mybehaviour2 -m mark --mark 2 //OUTPUT
iptables -A mychain -j mybehaviour3 -m mark --mark 3 //FORWARD



Swifty