[Openswan Users] Connection is getting reset every few seconds

[Prakash Palanisamy]

VPN connection between Linux Openswan U2.6.38 (Ubuntu EC2 instance in VPC with EIP) & Cisco ASA 5510 is getting reset every few seconds. Earlier today with the help of the community I solved the another problem with “pending phase 2” issue and after that we see that the connection is being very flaky.

Other details about the setup can be found in my previous thread - https://lists.openswan.org/pipermail/users/2015-August/023391.html

Auth logs:
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: initiating Main Mode
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: ignoring Vendor ID payload [Cisco IKE Fragmentation]
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: transition from state STATE_MAIN_I1 to state STATE_MAIN_I2
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: STATE_MAIN_I2: sent MI2, expecting MR2
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: received Vendor ID payload [Cisco-Unity]
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: received Vendor ID payload [XAUTH]
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: ignoring unknown Vendor ID payload [ec43b53de4bd9e2ec73fcf4ea211143f]
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: ignoring Vendor ID payload [Cisco VPN 3000 Series]
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: transition from state STATE_MAIN_I2 to state STATE_MAIN_I3
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: STATE_MAIN_I3: sent MI3, expecting MR3
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: received Vendor ID payload [Dead Peer Detection]
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: Main mode peer ID is ID_FQDN: '@Connection1-ASA.global.sdl.corp'
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: transition from state STATE_MAIN_I3 to state STATE_MAIN_I4
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: STATE_MAIN_I4: ISAKMP SA established {auth=OAKLEY_PRESHARED_KEY cipher=aes_256 prf=oakley_sha group=modp1536}
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #2: initiating Quick Mode PSK+ENCRYPT+TUNNEL+PFS+UP+IKEv2ALLOW+SAREFTRACK {using isakmp#1 msgid:b9dab225 proposal=AES(12)_256-SHA1(2)_160 pfsgroup=OAKLEY_GROUP_MODP1536}
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: ignoring informational payload, type NO_PROPOSAL_CHOSEN msgid=00000000
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: received and ignored informational message
Aug 24 13:35:52 gateway3 pluto[31154]: "Connection1/1x1" #1: received Delete SA payload: deleting ISAKMP State #1
Aug 24 13:35:52 gateway3 pluto[31154]: packet from 87.213.46.220:500: received and ignored informational message
Aug 24 13:35:58 gateway3 pluto[31154]: packet from 87.213.46.220:500: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-02_n] meth=106, but port floating is off
Aug 24 13:35:58 gateway3 pluto[31154]: packet from 87.213.46.220:500: received Vendor ID payload [draft-ietf-ipsec-nat-t-ike-03] meth=108, but port floating is off
Aug 24 13:35:58 gateway3 pluto[31154]: packet from 87.213.46.220:500: received Vendor ID payload [RFC 3947] meth=115, but port floating is off
Aug 24 13:35:58 gateway3 pluto[31154]: packet from 87.213.46.220:500: ignoring Vendor ID payload [Cisco IKE Fragmentation]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: responding to Main Mode
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: Oakley Transform [OAKLEY_3DES_CBC (192), OAKLEY_SHA1, OAKLEY_GROUP_MODP1024] refused due to strict flag
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: Oakley Transform [OAKLEY_3DES_CBC (192), OAKLEY_MD5, OAKLEY_GROUP_MODP1024] refused due to strict flag
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: Oakley Transform [OAKLEY_AES_CBC (128), OAKLEY_SHA1, OAKLEY_GROUP_MODP1024] refused due to strict flag
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: Oakley Transform [OAKLEY_AES_CBC (128), OAKLEY_SHA1, OAKLEY_GROUP_MODP1024] refused due to strict flag
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: Oakley Transform [OAKLEY_AES_CBC (256), OAKLEY_SHA1, OAKLEY_GROUP_MODP1024] refused due to strict flag
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: transition from state STATE_MAIN_R0 to state STATE_MAIN_R1
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: STATE_MAIN_R1: sent MR1, expecting MI2
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: received Vendor ID payload [Cisco-Unity]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: received Vendor ID payload [XAUTH]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: ignoring unknown Vendor ID payload [f7d4c0744bc4c632afa9ec7e85bf857b]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: ignoring Vendor ID payload [Cisco VPN 3000 Series]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: transition from state STATE_MAIN_R1 to state STATE_MAIN_R2
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: STATE_MAIN_R2: sent MR2, expecting MI3
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: received Vendor ID payload [Dead Peer Detection]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: Main mode peer ID is ID_FQDN: '@Connection1-ASA.global.sdl.corp'
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: transition from state STATE_MAIN_R2 to state STATE_MAIN_R3
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: STATE_MAIN_R3: sent MR3, ISAKMP SA established {auth=OAKLEY_PRESHARED_KEY cipher=aes_256 prf=oakley_sha group=modp1536}
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: ignoring informational payload, type IPSEC_INITIAL_CONTACT msgid=00000000
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #3: the peer proposed: 172.21.8.0/24:0/0 -> 10.100.0.0/16:0/0
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4: responding to Quick Mode proposal {msgid:b23b46bc}
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4:     us: 172.21.8.0/24===172.21.8.43[52.17.237.123]
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4:   them: 87.213.46.220<87.213.46.220>[@Connection1-ASA.global.sdl.corp]===10.100.0.0/16
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4: transition from state STATE_QUICK_R0 to state STATE_QUICK_R1
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4: STATE_QUICK_R1: sent QR1, inbound IPsec SA installed, expecting QI2
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4: transition from state STATE_QUICK_R1 to state STATE_QUICK_R2
Aug 24 13:35:58 gateway3 pluto[31154]: "Connection1/1x1" #4: STATE_QUICK_R2: IPsec SA established tunnel mode {ESP=>0x22ef875d <0x409dd686 xfrm=AES_256-HMAC_SHA1 NATOA=none NATD=none DPD=none}

Thanks,
Prakash

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