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Date:      Mon, 2 Jun 2008 12:27:41 -0400
From:      "Bob McConnell" <rvm@CBORD.com>
To:        "alexus" <alexus@gmail.com>, <freebsd-questions@freebsd.org>
Subject:   RE: VPN (IPSEC)
Message-ID:  <FF8482A96323694490C194BABEAC24A002D043EA@Email.cbord.com>
In-Reply-To: <6ae50c2d0806020913v2c7665b8nc3673e30cb8627cc@mail.gmail.com>
References:  <6ae50c2d0805311649p14863af3y43af39fb4aa2cc8a@mail.gmail.com> <6ae50c2d0806020913v2c7665b8nc3673e30cb8627cc@mail.gmail.com>

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On Behalf Of alexus
>
>anyone?
>
>
>On Sat, May 31, 2008 at 7:49 PM, alexus <alexus@gmail.com> wrote:
>> Hello,
>>
>> I'm trying to establish a VPN tunnel over internet, I read a
>> http://www.freebsd.org/doc/en/books/handbook/ipsec.html on how to set
>> it up, I'm some what strangeling if my setup will work at all.
>>

IIRC, IPSEC cannot work through a NAT connection. NAT changes header
fields that IPSEC uses for packet authentication. So the receiver cannot
validate the content of the modified header.

Bob McConnell



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