Date: Fri, 18 Apr 2003 15:38:22 -0700 From: "Crist J. Clark" <crist.clark@attbi.com> To: Damian Gerow <damian@sentex.net> Cc: net@freebsd.org Subject: Re: [LONG] Re: IPSec tunnel setup problems Message-ID: <20030418223822.GC39466@blossom.cjclark.org> In-Reply-To: <20030416190520.GJ648@sentex.net> References: <20030415223713.GB648@sentex.net> <00d001c303dc$191c2830$0b01a8c0@Beastie> <20030416190520.GJ648@sentex.net>
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On Wed, Apr 16, 2003 at 03:05:20PM -0400, Damian Gerow wrote:
> Thus spake Barry Irwin (bvi@itouchlabs.com) [16/04/03 01:52]:
> > Can I suggest you try using TCPdump to see whats going on as well.
>
> I've done it. I see continual re-tries for Phase I, nothing for Phase II.
> Here's what I see:
>
> tcpdump:
> 14:31:33.613674 pyroxene.sentex.ca.isakmp > asylum.afflictions.org.isakmp: isakmp: phase 1 I agg: [|sa]
> 14:31:53.428132 pyroxene.sentex.ca.isakmp > asylum.afflictions.org.isakmp: isakmp: phase 1 I agg: [|sa]
Well, one weird thing is that pyroxene must be behind some kind of NAT
device,
> initiating:
[snip]
> 43:09.033625 64.7.134.90:500 -> 199.212.134.18:500: isakmp 1.0 msgid 00000000: phase 1 I agg:
^^^
> sa: doi=ipsec situation=identity
> p: #1 protoid=isakmp transform=1
> t: #1 id=iketype=lifetype value=sectype=lifeduration value=0e10type=enc value=blowfishtype=keylen value=0080type=auth value=presharedtype=hash value=sha1type=group desc value=0005))))
> ke: key len=192)
> nonce: n len=16)
> id: idtype=IPv4 protoid=udp port=500 len=4 64.7.134.90)
^^^
> receiving:
[snip]
> 40:07.915101 64.7.134.90:41889 -> 199.212.134.18:500: isakmp 1.0 msgid 00000000: phase 1 I agg:
^^^^^
> (sa: doi=ipsec situation=identity
> (p: #1 protoid=isakmp transform=1
> (t: #1 id=ike (type=lifetype value=sec)(type=lifeduration value=0e10)(type=enc value=blowfish)(type=keylen value=0080)(type=auth value=preshared)(type=hash value=sha1)(type=group desc value=0005))))
> (ke: key len=192)
> (nonce: n len=16)
> (id: idtype=IPv4 protoid=udp port=500 len=4 64.7.134.90)
^^^
> 2003-04-16 14:40:07: DEBUG: remoteconf.c:134:getrmconf(): no remote configuration found.
> 2003-04-16 14:40:07: ERROR: isakmp.c:851:isakmp_ph1begin_r(): couldn't find configuration.
I'm not 100% as to whether that is a deal-breaker or not.
This doesn't explain why initiating in the other direction doesn't
work. But what kind of devices are in between these two hosts? What is
doing NAT?
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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