Re: PREROUTING with ULOG in what order: conn, mangle, imq, nat

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Hi Ramin,

Thanks for the clarification -- I had thought that it was done in "nat"

Cheers

Charles


On Tue, 2003-07-15 at 17:40, Ramin Dousti wrote:
> On Tue, Jul 15, 2003 at 05:11:05PM +0200, lartc@xxxxxxxxxxxxxxxxxxx wrote:
> 
> [snip...]
> 
> > where does de-natting occur?
> > 
> > i thought it was: 
> 
> Your thought is correct. ULOG sees the packets after the conntrack.
> tcpdump sees the packets before the conntrack.
> And de-natting occurs at the conntrack:
> 
> > WIRE -- > PREROUTING [ conntrack --> mangle --> imq --> nat ] ...
>   ^^^^                    ^^^^^^^      ^^^^^^
> tcpdump                  de-natting     ULOG
> 
> 
> Take a look at "Table 3-3. Forwarded packets" in Oscar's tutorial.
> The order of mangle/nat is reverse for incoming and outgoing...
> 
> Ramin
> 
> > if i am capturing at mangle, should not the snat address be there?
> > 
> > Many Many Many Thanks!!
> > 
> > Charles
> > 
> > 
> > 
> > 




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