<div dir="ltr"><div>Hello,</div>
<div> </div>
<div>I'm having issues with an ikve1 l2l vpn connection between a strongswan
instance behind a nat and a cisco asa. I have this problem in live and have been
able to recreate it in a test environment.</div>
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<div>After 75% of the phase 1 lifetime the cisco asa decides to initiate a rekey
of the tunnel. ie when I set the phase 1 lifetime to 8 hours, the cisco asa
initiates a rekey after 6 hours, when i set the phase 1 lifetime to 1 hour, the
cisco asa initiates a rekey after 45 minutes.</div>
<div> </div>
<div>The phase 1 rekey is immediately successful but the tunnel is torn down by
DPD on the cisco asa around 15 seconds later. It looks to me like a problem with
the cisco asa as I understood that the initiator (in this case the strongswan
instance) should be the one that initiates the rekey. And even then, it
shouldn't rekey until the phase 1 lifetime is expiring. I thought I'd mail my
problem to this list in the hope that someone might offer some advice. Hopefully
I'm just doing something stupid.</div>
<div> </div>
<div>I've attached loads of config, logs, packet captures etc. (probably
overkill). Please note that some clocks are GMT, others are BST.</div>
<div> </div>
<div>Grateful for ANY help,</div>
<div> </div>
<div> </div>
<div>Tormod</div></div>