Date: Sun, 30 Jun 2013 22:32:56 +0700 From: Eugene Grosbein <eugen@grosbein.net> To: Sami Halabi <sodynet1@gmail.com> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, "Paul A. Procacci" <pprocacci@datapipe.com>, freebsd-ipfw <freebsd-ipfw@freebsd.org> Subject: Re: DNAT in freebsd Message-ID: <51D04FA8.8080900@grosbein.net> In-Reply-To: <CAEW%2Bogbx15KiayBHFJ7T1YVGQ2pwm1ArQaSrjUk6XUOBgVPggA@mail.gmail.com> References: <CAEW%2BogYp61U2zjicksYekSdfmLLZh5g9QM3GUg4n16ZbudVZtg@mail.gmail.com> <20130629002959.GB20376@nat.myhome> <CAEW%2BogZ=a6LZavOtcb_egNWFQ8bJP0gzP6pc90tu1dcWC9K80A@mail.gmail.com> <51D006F6.6060809@grosbein.net> <CAEW%2Bogbx15KiayBHFJ7T1YVGQ2pwm1ArQaSrjUk6XUOBgVPggA@mail.gmail.com>
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On 30.06.2013 18:48, Sami Halabi wrote: > Hi, > I don't understand how reverse mode works exactly, and didn't find a good example. > > > can you try and help on the configuration? Well, that's pretty simple. Generally, NAT translates source IP address of the packet keeping destination IP intact. You need both of source and destination addresses get translated. Reverse NAT translates does, well, reverse thing: it translates destination IP keeping source IP intact. So, you just need setup two ipfw nat instances, one "general" and one "reverse" and pass your packets through both instances. Eugene Grosbein
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