From owner-freebsd-net  Sat Apr 10  6:43:40 1999
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Date: Sat, 10 Apr 1999 21:44:27 +0800 (CST)
From: Que Hongyu <qhy@hw.ia.ac.cn>
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To: net@freebsd.org
Subject: NAT help
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Hi, I am using 3.1-RELEASE and want to use NAT.
here is my situation:
I have only one net card with primiary IP: 159.226.21.172/255.255.255.192
  I add alias to it, 10.1.1.1/24.
  then I want to NAT 10.1.1.0/24 to outside internet.

After reading some document, I have tried add
options IPFIREWALL
options IPDIRVERT
options IPFIREWALL_DEFAULT_TO_ACCEPT

plus, 

ipfw add divert all from any to any via ed1

But It does not work , can anyone give me some hints?

Thanks

Que Hongyu





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