Re: NAT table bypass for local traffic

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On Wed, 28 Apr 2010, Bill Prochazka wrote:

> A more simple example is that ICMP echo requests
> go out the nat table's output chain, but ICMP echo replies do not.

The incoming ICMP echo-request (should be visible in PREROUTING) sets up 
a conntrack entry, the outgoing echo-reply matches to it and thus does 
not show up in nat OUTPUT/POSTROUTING.

c'ya
sven-haegar

-- 
Three may keep a secret, if two of them are dead.
- Ben F.
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