From owner-freebsd-questions@FreeBSD.ORG  Sat May 13 10:09:03 2006
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Date: Sat, 13 May 2006 12:08:56 +0200
From: Jacek Gawrych <jacekgawrych_itp@o2.pl>
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Subject: FTP behind NAT
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hi,

i'm using FreeBSD as a firewall(IPF)/gateway with external IP 
10.15.0.10/16 and internal 192.168.0.250/24. inside LAN i have passive 
ftp server with 192.168.0.252/24. how should i configure ipnat 
(/etc/ipnat.rules)?

thx for any piece of advice
jacek