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Date:      Thu, 5 Apr 2007 12:44:00 -0500
From:      David DeSimone <fox@verio.net>
To:        freebsd-net@freebsd.org, freebsd-pf@freebsd.org
Subject:   Status of sasyncd for IPSEC?
Message-ID:  <20070405174359.GA23665@verio.net>

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Hello Lists -

Sorry for the cross-post, but I am not actually sure which list this
question belongs on.

I have been working on building HA firewall/VPN systems using PF and
IPSEC and CARP.  The systems work quite well, however there is a small
gap in the desired feature set:  HA VPN.

I believe OpenBSD has a daemon called sasyncd(8) which utilizes
pfsync(4) to synchronize the negotiated SA's between the cluster
members.  So, if one firewall fails, the other can pick up and continue
not only firewall state but VPN activity without a hitch.

So I am wondering, what is the status of a port of sasyncd to FreeBSD? 
Any pointers appreciated.

I am also wondering about IKE synchronization.  My understanding is that
sasyncd keeps the IPSEC SA's sync'd between cluster members, but the IKE
negotiations are not synchronized.  I imagine that racoon(8) would have
to take on that role, and I am curious if any work has been done to
facilitate this.

If there is any further work needed, I would like to look into
completing it, but I don't want to start from scratch unless I have
to.  Please let me know what info is available.

- -- 
David DeSimone == Network Admin == fox@verio.net
  "It took me fifteen years to discover that I had no
   talent for writing, but I couldn't give it up because
   by that time I was too famous.  -- Robert Benchley
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