IPSec tunnel setup problems

Damian Gerow damian at sentex.net
Tue Apr 15 14:58:47 PDT 2003


Tried sending this to -questions, now trying -net.  I'm pretty sure it's
something obvious I'm missing, just don't know what.

-----

I'm trying to set up an IPSec tunnel between two gateways, with little luck.
I'm pretty sure I have my setkey entries done properly, it seems to be the
negotiations that are failing.  Local is 10.0.1.1, and remote is 10.0.2.1.
Their is only a tunnel between the two remote LANs, there's no transport
encryption.

>From the initiating side, I see (roughly):

2003-04-04 15:33:19: DEBUG: remoteconf.c:118:getrmconf(): configuration found for 10.0.2.1
2003-04-04 15:33:19: INFO: isakmp.c:1684:isakmp_post_acquire(): IPsec-SA request for 10.0.2.1 queued due to no phase1 found.
<debug output>
2003-04-04 15:33:20: DEBUG: isakmp_agg.c:162:agg_i1send(): authmethod is pre-shared key
2003-04-04 15:33:20: DEBUG: isakmp.c:2113:set_isakmp_payload(): add payload of len 52, next type 4
2003-04-04 15:33:20: DEBUG: isakmp.c:2113:set_isakmp_payload(): add payload of len 192, next type 10
2003-04-04 15:33:20: DEBUG: isakmp.c:2113:set_isakmp_payload(): add payload of len 16, next type 5
2003-04-04 15:33:20: DEBUG: isakmp.c:2113:set_isakmp_payload(): add payload of len 8, next type 0
2003-04-04 15:33:20: DEBUG: isakmp.c:2248:isakmp_printpacket(): begin.
<debug output>
2003-04-04 15:33:20: DEBUG: sockmisc.c:421:sendfromto(): sockname 10.0.1.1[500]
2003-04-04 15:33:20: DEBUG: sockmisc.c:423:sendfromto(): send packet from 10.0.1.1[500]
2003-04-04 15:33:20: DEBUG: sockmisc.c:425:sendfromto(): send packet to 10.0.2.1[500]
2003-04-04 15:33:20: DEBUG: sockmisc.c:570:sendfromto(): 1 times of 312 bytes message will be sent to 10.0.1.1[500]
<plogdump>
2003-04-04 15:33:20: DEBUG: isakmp.c:1449:isakmp_ph1resend(): resend phase1 packet d7824158efb89160:0000000000000000

So it /looks/ to be initiating correctly, no?  The only thing that confuses
me is that 10.0.1.1 is sending to 10.0.1.1, according to the debug
output...

I believe the problem is with the remote end:

2003-04-04 15:36:23: DEBUG: isakmp.c:222:isakmp_handler(): 312 bytes message received from 10.0.1.1[40418]
<plogdump>
2003-04-04 15:36:23: DEBUG: isakmp.c:2248:isakmp_printpacket(): begin.
<packet dump>
2003-04-04 15:36:23: DEBUG: remoteconf.c:134:getrmconf(): no remote configuration found.
2003-04-04 15:36:23: ERROR: isakmp.c:851:isakmp_ph1begin_r(): couldn't find configuration.

So it looks like the remote racoon.conf isn't finding the 'remote 10.0.1.1'
section, as it's failing in Phase I (Phase II would mean it can't find
'sainfo ...', right?).

The two psk.txt's are exactly the same, the two /etc/ipsec.conf's are
exact mirrors, and the two racoon.conf's are mirrors (with configuration
names changed to match directions).  It /feels/ like the remote (10.0.2.1)
isn't finding the 'remote 10.0.1.1' configuration section that exists in
there.  I yanked the 'remote anonymous' and 'sainfo anonymous'
configurations to help narrow this down.

Does anyone have any pointers?  Please reply personally, as I'm not
subscribed.

  - Damian


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