[strongSwan] Random IPSEC IKE1 Dropping

Mon Jul 21 20:09:33 CEST 2014

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Hello Bradley,

There are diverse reasons for this. The first one is, that  the responder doesn't have a fitting configuration for the request. There are more, but I don't know them all.
Check the configuration of both sides (Especially the DNs of the certificates, if there are any used, and the IDs, as well as the ike and esp settings).

Regards,
Noel Kuntze

GPG Key id: 0x63EC6658
Fingerprint: 23CA BB60 2146 05E7 7278 6592 3839 298F 63EC 6658
Am 21.07.2014 20:07, schrieb Turnbough, Bradley E.:
> I'm sorry, but I believe my grep missed something:
>
> Jul 21 13:29:23 15[IKE] <109> received NO_PROPOSAL_CHOSEN error notify
>
> What does this mean, and why is it not chosing a proposal?
>
>
> ________________________________
> From: Turnbough, Bradley E.
> Sent: Monday, July 21, 2014 12:47 PM
> To: users at lists.strongswan.org
> Subject: Random IPSEC IKE1 Dropping
>
> Update:
>
> I was able to catch the failure happen.  This is a grepped charon.log.  The failure was detected by my NMS between 13:26 and 13:27.  Why am I continually experiencing issues with my IKEv1 tunnels?  Does anyone have any insight into this?
>
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100> queueing QUICK_DELETE task
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100> activating new tasks
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100>   activating QUICK_DELETE task
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100> closing expired CHILD_SA customer-sa-07{18} with SPIs ca4c0040_i 8ef96c82_o and TS a.b.c.0/24 === d.e.0.0/16
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100> sending DELETE for ESP CHILD_SA with SPI ca4c0040
> Jul 21 13:25:16 02[ENC] <customer-sa-01|100> generating INFORMATIONAL_V1 request 1724216626 [ HASH D ]
> Jul 21 13:25:16 02[NET] <customer-sa-01|100> sending packet: from f.g.h.i[4500] to j.k.l.m[4500] (76 bytes)
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100> activating new tasks
> Jul 21 13:25:16 02[IKE] <customer-sa-01|100> nothing to initiate
> Jul 21 13:25:16 08[NET] sending packet: from f.g.h.i[4500] to j.k.l.m[4500]
> Jul 21 13:25:16 14[IKE] <customer-sa-01|100> queueing QUICK_DELETE task
> Jul 21 13:25:16 14[IKE] <customer-sa-01|100> activating new tasks
> Jul 21 13:25:16 14[IKE] <customer-sa-01|100>   activating QUICK_DELETE task
> Jul 21 13:25:16 14[IKE] <customer-sa-01|100> activating new tasks
> Jul 21 13:25:16 14[IKE] <customer-sa-01|100> nothing to initiate
> Jul 21 13:29:07 13[IKE] <customer-sa-01|100> sending keep alive to j.k.l.m[4500]
> Jul 21 13:29:07 08[NET] sending packet: from f.g.h.i[4500] to j.k.l.m[4500]
> Jul 21 13:29:23 07[NET] received packet: from j.k.l.m[500] to f.g.h.i[500]
> Jul 21 13:29:23 01[NET] <109> received packet: from j.k.l.m[500] to f.g.h.i[500] (264 bytes)
> Jul 21 13:29:23 01[IKE] <109> j.k.l.m is initiating a Main Mode IKE_SA
> Jul 21 13:29:23 01[NET] <109> sending packet: from f.g.h.i[500] to j.k.l.m[500] (140 bytes)
> Jul 21 13:29:23 08[NET] sending packet: from f.g.h.i[500] to j.k.l.m[500]
> Jul 21 13:29:23 07[NET] received packet: from j.k.l.m[500] to f.g.h.i[500]
> Jul 21 13:29:23 15[NET] <109> received packet: from j.k.l.m[500] to f.g.h.i[500] (100 bytes)
> Jul 21 13:29:24 07[NET] received packet: from j.k.l.m[500] to f.g.h.i[500]
> Jul 21 13:29:24 14[NET] <110> received packet: from j.k.l.m[500] to f.g.h.i[500] (264 bytes)
> Jul 21 13:29:24 14[IKE] <110> j.k.l.m is initiating a Main Mode IKE_SA
> Jul 21 13:29:24 14[NET] <110> sending packet: from f.g.h.i[500] to j.k.l.m[500] (140 bytes)
> Jul 21 13:29:24 08[NET] sending packet: from f.g.h.i[500] to j.k.l.m[500]
> Jul 21 13:29:24 07[NET] received packet: from j.k.l.m[500] to f.g.h.i[500]
> Jul 21 13:29:24 02[NET] <110> received packet: from j.k.l.m[500] to f.g.h.i[500] (100 bytes)
> Jul 21 13:29:25 07[NET] received packet: from j.k.l.m[500] to f.g.h.i[500]
> Jul 21 13:29:25 13[NET] <111> received packet: from j.k.l.m[500] to f.g.h.i[500] (264 bytes)
> Jul 21 13:29:25 13[IKE] <111> j.k.l.m is initiating a Main Mode IKE_SA
>
>
>
>
> -------------------Original post:------------------
>
>
> Hello All,
>
> I'm currently running this config on an active strongswan box.  I am running CentOS 6.5 (fully patched) along side of strongswan version "Linux strongSwan U5.0.4/K2.6.32-431.3.1.el6.x86_6"
>
> We upgraded a while back from a version that still used pluto to this new version (which uses charon)  We've started to experience random conn drops (primarilly on sa-01 and sa-05.  The only way to resolve this that I've found is to perform a 'service strongswan restart' This is not the only conn which experiences this, so I'm thinking this may be a configuration issue or a bug.  The problem is, is I don't necessarily know much about ipsec.  I'm hoping someone can help me out.  Can anyone?  Please?
>
> conn customer-sa-01
>   auto=start
>   rightsubnet=A.0.0.0/8
>   also=customer-default
>
> conn customer-sa-02
>   auto=start
>   rightsubnet=B.C.0.0/16
>   also=customer-default
>
> conn customer-sa-03
>   auto=start
>   rightsubnet=D.E.0.0/16
>   also=customer-default
>
> conn customer-sa-04
>   auto=start
>   rightsubnet=F.G.0.0/15
>   also=customer-default
>
> conn customer-sa-05
>   auto=start
>   rightsubnet=H.I.0.0/15
>   also=customer-default
>
> conn customer-sa-06
>   auto=start
>   rightsubnet=J.K.0.0/16
>   also=customer-default
>
> conn customer-sa-07
>   auto=start
>   rightsubnet=L.M.0.0/16
>   also=customer-default
>
> conn customer-sa-08
>   auto=start
>   rightsubnet=N.O.P.Q/32
>   also=customer-default
>
> conn customer-default
>   keyingtries=%forever
>   authby=secret
>   left=R.S.T.U
>   leftsubnet=V.W.X.0/24
>   right=Y.Z.AA.BB
>   rightallowany=yes
>   keyexchange=ikev1
>   ikelifetime=480m
>   keylife=3600s
>   mobike=no
>   ike=aes256-sha1-modp1024
>   esp=3des-md5
>
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