[LARTC] MARK target question

[LARTC] MARK target question

[Peter Rabbitson]

This is more of a NF question but it is tightly related to LARTC as well. In the following example:

-t mangle -A PREROUTING -i eth0 -j MARK 0x1
....
-t mangle -A INPUT -i eth0 -j MARK 0x2

Since MARK is a non-terminatring target, what would be the resulting mark on a packet comming from the outside and 
destined for a local process?

Thanks

P.S. I agree, the example looks stupid, but on the other hand the real life case where this situation occurs is 
rather confusing and therefore not very suitable. 
_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Re: [LARTC] MARK target question

[Stef Coene]

On Sunday 09 May 2004 02:00, Peter Rabbitson wrote:
> This is more of a NF question but it is tightly related to LARTC as well.
> In the following example:
>
> -t mangle -A PREROUTING -i eth0 -j MARK 0x1
> ....
> -t mangle -A INPUT -i eth0 -j MARK 0x2
>
> Since MARK is a non-terminatring target, what would be the resulting mark
> on a packet comming from the outside and destined for a local process?
INPUT is after PREROUTING, so 0x2.
See 
http://www.docum.org/stef.coene/qos/kptd/

Stef

-- 
stef.coene@docum.org
 "Using Linux as bandwidth manager"
     http://www.docum.org/
_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/

Re: [LARTC] MARK target question

[Patrick Turley]

Peter Rabbitson wrote:
> This is more of a NF question but it is tightly related to LARTC as well. In the following example:
> 
> -t mangle -A PREROUTING -i eth0 -j MARK 0x1
> ....
> -t mangle -A INPUT -i eth0 -j MARK 0x2
> 
> Since MARK is a non-terminatring target, what would be the resulting mark on a packet comming from the outside and 
> destined for a local process?

The mark would be 0 until the packet hits the first rule. After that, it 
would be 1 through the remainder of the PREROUTING chains. After 
routing, it would pass to the INPUT chains where it would change to 2 
when it hits the second rule and would remain 2 through the rest of the 
INPUT chains.

_______________________________________________
LARTC mailing list / LARTC@mailman.ds9a.nl
http://mailman.ds9a.nl/mailman/listinfo/lartc HOWTO: http://lartc.org/