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Re: linux-ipsec: ESP/AH tunnel mode= ESP/AH transport mode(IP in IP tunnel mode)?

To: chenl <chenl@mail.sc.cninfo.net>
Subject: Re: linux-ipsec: ESP/AH tunnel mode= ESP/AH transport mode(IP in IP tunnel mode)?
From: Henry Spencer <henry@spsystems.net>
Date: Thu, 8 Jul 1999 00:08:27 -0400 (EDT)
cc: Linux IPsec <linux-ipsec@clinet.fi>, IP Security List <ipsec@lists.tislabs.com>
In-Reply-To: <37841C2C.4B363405@mail.sc.cninfo.net>
Sender: owner-ipsec@lists.tislabs.com

On Thu, 8 Jul 1999, chenl wrote:
> that is:
> ESP/AH tunnel mode= ESP/AH transport mode(IP in IP tunnel mode)
> Is this right?

Yes (unless we've overlooked something really obscure).  To quote RFC 2401:

   "A tunnel mode SA is essentially an SA applied to an IP tunnel."

(This immediately following an explanation of transport mode.)

                                                          Henry Spencer
                                                       henry@spsystems.net
                                                     (henry@zoo.toronto.edu)

References:

ESP/AH tunnel mode= ESP/AH transport mode(IP in IP tunnel mode)?

From: chenl <chenl@mail.sc.cninfo.net>

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