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Subject: Re: OpenVPN vs IPSec
To: Victor Sudakov <vas@mpeks.tomsk.su>,
 "Muenz, Michael" <m.muenz@spam-fetish.org>
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Cc: freebsd-net@freebsd.org
From: Eugene Grosbein <eugen@grosbein.net>
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Date: Sun, 19 Nov 2017 21:37:10 +0700
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19.11.2017 21:30, Victor Sudakov wrote:

> I have a personal success story of establishing transport mode IPSec
> between Windows and FreeBSD/racoon. But when other OSes are involved,
> I have the impression that there is no pure IPSec, it's usually
> IPSec+L2TP, and that's where the FreeBSD part becomes complicated
> (interaction between ipsec, mpd5 and racoon is required).

No interaction between mpd5 and racoon is required to make IPSec+L2TP working.
In fact, mpd5 starts its part only when IKE/IPSEC part is already completed
and runs its unencrypted L2TP protocol over existing IPSec tunnel without knowning it.