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Date:      Mon, 13 Jan 2003 14:40:18 -0500
From:      "JoeB" <barbish@a1poweruser.com>
To:        "FBSDQ" <questions@FreeBSD.ORG>
Subject:   execution sequance of IPFW/IPFILTER when used together
Message-ID:  <MIEPLLIBMLEEABPDBIEGIEFODDAA.barbish@a1poweruser.com>

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Informational post for the archives

From  lists-freebsd@silverwraith.com  who wrote
We actually found it goes:

Internal private Net -> NIC -> IPF+NAT -> IPFW -> Public internet
World

Public internet World -> IPF+NAT -> IPFW -> NIC -> Internal Private
net


Suffice to say, IPF+NAT always sees the packets first

This is way to use ipfilter to perform the nat function and ipfw
dummynet



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