But as soon as I start an scp from Perspex to Soekris, Perspex reboots
after a few hundred kb.  Unfortunately, Perspex is in a datacenter and I
do not have console access to it to see what the heck is happening at that
exact moment.

I don't recall.  But for the record (IPSEC inside GRE):

If the Transport IPSEC connection is negotiated between two hosts inside the GRE tunnel private subnet and the IPSEC connection goes down, the data flows in cleartext. *bad*

The opposite would be (GRE-inside-IPSEC-Transport):

If the Transport IPSEC tunnel is built between the two hosts` public interfaces and the GRE tunnel is built normally and thus encrypted, things should work. Of course, we run into the crash.

The trick was I tried it on OpenBSD/Sparc where there is no-such-thing as "Flash back to the BIOS" and it turns out a Sun "watchdog timer" is getting hit. Watchdog timers on i386 must cause the BIOS to reset. So the problem is in-kernel and the config is probably too obscure for developers to spend time on.

My solution was to re-IP my network properly, and use IP Supernets/ summarization/ subnet aggregation thus consolidating the need for so many spokes on a hub-and-spoke VPN config.

~~BAS


I noticed that there were no responses to your thread, but I was wondering
if you had worked out your problem or if you decided to go the ipsec
encapsulated in gre.

Cheers,

/Jason
--
Jason Taylor
e: [EMAIL PROTECTED]
m: 514-815-8204



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