[Openswan Users] Connecting to Cisco VPN, getting INVALID_ID_INFORMATION followed by "perhaps peer likes no proposal"

simon charles charlessimon at hotmail.com
Wed Mar 19 14:44:16 EDT 2014

Tim , 
    I did not see the rightsubnet and leftsubnet listed in your ipsec configuration. It is possible that you have a mismatch between what you have for your leftsubnet/rightsubnet and what Cisco side has for its access-list 127 ( which is  a translation of {local subnet} { remote subnet } )

- Simon Charles - 

Date: Wed, 19 Mar 2014 09:52:12 -0700
From: tim at mccune.name
To: users at lists.openswan.org
Subject: [Openswan Users] Connecting to Cisco VPN, getting INVALID_ID_INFORMATION followed by "perhaps peer likes no proposal"

Hi there.  I was wondering if anyone could help me out with this problem I'm having trying to connect from openswan 2.6.38 on Ubuntu Lucid to a Cisco VPN appliance.  I don't seem to be able to establish a connection.  Here is the output I get in pluto.log:

"mine" #1: initiating Main Mode
"mine" #1: ignoring Vendor ID payload [Cisco IKE Fragmentation]
"mine" #1: transition from state STATE_MAIN_I1 to state STATE_MAIN_I2
"mine" #1: STATE_MAIN_I2: sent MI2, expecting MR2

"mine" #1: received Vendor ID payload [Cisco-Unity]
"mine" #1: received Vendor ID payload [XAUTH]
"mine" #1: ignoring unknown Vendor ID payload [716e44df1a91b4edaffa5ff96dd22125]
"mine" #1: ignoring Vendor ID payload [Cisco VPN 3000 Series]

"mine" #1: transition from state STATE_MAIN_I2 to state STATE_MAIN_I3
"mine" #1: STATE_MAIN_I3: sent MI3, expecting MR3
"mine" #1: received Vendor ID payload [Dead Peer Detection]
"mine" #1: Main mode peer ID is ID_IPV4_ADDR: 'XX.XX.XX.XX'

"mine" #1: transition from state STATE_MAIN_I3 to state STATE_MAIN_I4
"mine" #1: STATE_MAIN_I4: ISAKMP SA established {auth=OAKLEY_PRESHARED_KEY cipher=aes_128 prf=oakley_sha group=modp1024}
"mine" #2: initiating Quick Mode PSK+ENCRYPT+TUNNEL+PFS+UP+IKEv2ALLOW+SAREFTRACK {using isakmp#1 msgid:c359ad28 proposal=AES(12)_128-SHA1(2)_160 pfsgroup=OAKLEY_GROUP_MODP1024}

"mine" #1: ignoring informational payload, type INVALID_ID_INFORMATION msgid=00000000
"mine" #1: received and ignored informational message
"mine" #1: received Delete SA payload: deleting ISAKMP State #1

packet from received and ignored informational message
"mine" #2: max number of retransmissions (2) reached STATE_QUICK_I1.  No acceptable response to our first Quick Mode message: perhaps peer likes no proposal 

"mine" #2: starting keying attempt 2 of an unlimited number

and this output just repeats over and over.  As far as I can tell, we are sending all of the correct parameters in our proposal, based on the configuration information we have been given by the organization that maintains the Cisco appliance.  Here is what they provided us with:

Phase 1:
Encryption scheme: IKE
Authentication Method: Pre-Shared Key
Diffie-Hellman Group: Group 2
Encryption Algorithm: AES128
Hashing Algorithm: SHA-1
Main or Aggressive Mode: Main Mode

Lifetime (for renegotiation): 28800 seconds
Phase 2:
Encapsulation mode: tunnel
Encryption algorithm ESP: AES128
Authentication Algorithm: SHA-1

Perfect Forward Secrecy: Group 2
Lifetime (for renegotiation): 3600 seconds

Here is the configuration on our end in ipsec.conf:

conn mine


And here is the configuration on their end on the Cisco appliance:

crypto ipsec transform-set MyOrg esp-aes esp-sha-hmac
crypto map gtvpn-rules 127 match address 127
crypto map gtvpn-rules 127 set pfs group2

crypto map gtvpn-rules 127 set peer XX.XX.XX.XX
crypto map gtvpn-rules 127 set transform-set MyOrg

crypto map gtvpn-rules 127 set security-association lifetime seconds 3600

tunnel-group XX.XX.XX.XX type ipsec-l2l
tunnel-group XX.XX.XX.XX ipsec-attributes
pre-shared-key xxxxxxxx

access-list 127 extended permit ip host YY.YY.YY.YY host XX.XX.XX.XX

access-list 127 extended permit ip host ZZ.ZZ.ZZ.ZZ host XX.XX.XX.XX

Any guidance would be appreciated.

Thank you!!

Users at lists.openswan.org
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