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VPN Agressive mode - Router Cisco x Fortigate

Alan David Sulino Brito
Level 1
Level 1

‎01-22-2016 10:24 AM

Hi,
We are currently trying to establish a site to site VPN with a branch. The branch is using a Cisco router 2911. He sent us the configuration parameters which we configured, but the VPN tunnel is still not coming up. I think the phase 1 is ok, the problem is with phase2.
 
[Cisco Router] {Dynamic IP} ---------> (Internet) --------->{Static IP} [Fortigate Amazon]
+ Fortigate: HUB
+ Cisco Router: SPOKE
 
Fortigate Config
config vpn ipsec phase1-interface
    edit "HUB"
        set type dynamic
        set interface "port1"
        set dhgrp 2
        set mode aggressive
        set peertype one
        set proposal aes256-sha1
        set peerid "hub"
        set psksecret ***
    next
end
config vpn ipsec phase2-interface
    edit "VPN"
        set keepalive enable
        set phase1name "HUB"
        set proposal 3des-sha1
        set dhgrp 2
        set keylifeseconds 3600
    next
end
config router static
    edit 1
        set device "HUB"
        set dst 10.21.50.0 255.255.255.0
    next
end
config firewall policy
    edit 1
        set srcintf "HUB"
        set dstintf "port1"
        set srcaddr "all"
        set dstaddr "all"
        set action accept
        set schedule "always"
        set service "ALL"
    next
    edit 2
        set srcintf "port1"
        set dstintf "HUB"
        set srcaddr "all"
        set dstaddr "all"
        set action accept
        set schedule "always"
        set service "ALL"
    next
end


Router 2911 config
crypto keyring KEYR1
  pre-shared-key address 1.1.1.1 key ***
!
crypto isakmp policy 10
 encr aes 256
 authentication pre-share
 group 2
 lifetime 28800
crypto isakmp keepalive 10 5
crypto isakmp profile R2_ISAKMP_PROF
   keyring KEYR1
   self-identity user-fqdn hub
   match identity address 1.1.1.1 255.255.255.255
   initiate mode aggressive
!
!
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
!
crypto ipsec profile R2_VTI
 set transform-set ESP-3DES-SHA
 set pfs group2
 set isakmp-profile R2_ISAKMP_PROF
interface Tunnel3
 no ip address
 tunnel source GigabitEthernet0/1
 tunnel mode ipsec ipv4
 tunnel destination 1.1.1.1
 tunnel protection ipsec profile R2_VTI
!
ip route 172.0.1.0 255.255.255.0 Tunnel3
 
 
Logs Fortigate
ike 0:HUB: cached as dynamic 'hub'
ike 0: cache rebuild done
ike 0: IKEv1 Aggressive, comes 201.91.58.58:500->172.0.1.100 3, peer-id=hub
ike 0:f58d54ee1e06c362/0000000000000000:2638: negotiation result
ike 0:f58d54ee1e06c362/0000000000000000:2638: proposal id = 1:
ike 0:f58d54ee1e06c362/0000000000000000:2638:   protocol id = ISAKMP:
ike 0:f58d54ee1e06c362/0000000000000000:2638:      trans_id = KEY_IKE.
ike 0:f58d54ee1e06c362/0000000000000000:2638:      encapsulation = IKE/none
ike 0:f58d54ee1e06c362/0000000000000000:2638:         type=OAKLEY_ENCRYPT_ALG, val=AES_CBC.
ike 0:f58d54ee1e06c362/0000000000000000:2638:         type=OAKLEY_HASH_ALG, val=SHA.
ike 0:f58d54ee1e06c362/0000000000000000:2638:         type=AUTH_METHOD, val=PRESHARED_KEY.
ike 0:f58d54ee1e06c362/0000000000000000:2638:         type=OAKLEY_GROUP, val=1024.
ike 0:f58d54ee1e06c362/0000000000000000:2638: ISAKMP SA lifetime=28800
ike 0:f58d54ee1e06c362/0000000000000000:2638: SA proposal chosen, matched gateway HUB
ike 0:HUB:2638: DPD negotiated
ike 0:HUB:2638: unsupported NAT-T version draft-ietf-ipsec-nat-t-ike-07
ike 0:HUB:2638: selected NAT-T version: RFC 3947
ike 0:HUB:2638: cookie f58d54ee1e06c362/6b13e0e54ab27d49
ike 0:HUB:2638: ISAKMP SA f58d54ee1e06c362/6b13e0e54ab27d49 key 32:19C76885A298F7401E37786E14A170A990858529EA282D4475EC73BD20BD33F9
ike 0:HUB:2638: out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
ike 0:HUB:2638: sent IKE msg (agg_r1send): 172.0.1.100:500->201.91.58.58:500, len=380, id=f58d54ee1e06c362/6b13e0e54ab27d49
ike 0:HUB:2638: out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
ike 0:HUB:2638: sent IKE msg (P1_RETRANSMIT): 172.0.1.100:500->201.91.58.58:500, len=380, id=f58d54ee1e06c362/6b13e0e54ab27d49
ike 0: comes 201.91.58.58:4500->172.0.1.100:4500,ifindex=3....
ike 0: IKEv1 exchange=Aggressive id=f58d54ee1e06c362/6b13e0e54ab27d49 len=140
ike 0: in F58D54EE1E06C3626B13E0E54AB27D4908100401000000000000008C637FE1155BA6DFDCC582F771715C7D9588AF4B6D0CE1DE97523351576A418A46E0ED65AC5E426DAFC1F9FDD84069A51BAF4DC3B70AF5A03A4DEEA11BCF872AEBF4C9B6ADB642C0AAB9C0EDE181467C496828DBD4F040E6F2D6F89E0A18136F08CACC89082F59A9CCBAE70F483E1D03E1
ike 0:HUB:2638: responder: aggressive mode get 2nd response...
ike 0:HUB:2638: dec F58D54EE1E06C3626B13E0E54AB27D4908100401000000000000008C140000182C26EB5991002A24F17EF55CB9F5197796BC8F2B14000018F1977B1078CC25FD607CFA88C2181AD6CD3654780B000018026FC51CE253396CFE87805DBAA02E91CC9D3DA50000001C0000000101106002F58D54EE1E06C3626B13E0E54AB27D49000000000000000000000000
ike 0:HUB:2638: received NAT-D payload type 20
ike 0:HUB:2638: received NAT-D payload type 20
ike 0:HUB:2638: received notify type 24578
ike 0:HUB:2638: PSK authentication succeeded
ike 0:HUB:2638: authentication OK
ike 0:HUB:2638: NAT detected: ME
ike 0: comes 201.91.58.58:4500->172.0.1.100:4500,ifindex=3....
ike 0: IKEv1 exchange=Quick id=f58d54ee1e06c362/6b13e0e54ab27d49:36da9bbe len=316
ike 0: in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
ike 0:HUB:2638: can not start the quick mode 00000000, waiting to establish ISAKMP SA f58d54ee1e06c362/6b13e0e54ab27d49
ike 0:HUB:2638: remote port change 500 -> 4500
ike 0:HUB:2638: established IKE SA f58d54ee1e06c362/6b13e0e54ab27d49
ike 0:HUB: adding new dynamic tunnel for 201.91.58.58:4500
ike 0:HUB_0: added new dynamic tunnel for 201.91.58.58:4500
ike 0:HUB_0:2638: processing INITIAL-CONTACT
ike 0:HUB_0: flushing
ike 0:HUB_0: flushed
ike 0:HUB_0:2638: processed INITIAL-CONTACT
ike 0:HUB_0:2638: no pending Quick-Mode negotiations
ike 0:HUB_0: link is idle 3 172.0.1.100->201.91.58.58:4500 dpd=1 seqno=1
ike 0:HUB_0:2638: send IKEv1 DPD probe, seqno 1
ike 0:HUB_0:2638: enc F58D54EE1E06C3626B13E0E54AB27D49081005015E5A6479000000540B0000188287A6048F4AF1657D56B33040E778BF7FBEF234000000200000000101108D28F58D54EE1E06C3626B13E0E54AB27D4900000001
ike 0:HUB_0:2638: out F58D54EE1E06C3626B13E0E54AB27D49081005015E5A64790000005C607AFA57FFD6F456BAB5BB621DD11556CA5249327606B989396148BB3E8BD25CA7713C0F2E7F0B136FABD5285D56C3BD925A2D71F49F4589F43B703D15581101
ike 0:HUB_0:2638: sent IKE msg (R-U-THERE): 172.0.1.100:4500->201.91.58.58:4500, len=92, id=f58d54ee1e06c362/6b13e0e54ab27d49:5e5a6479
ike 0: comes 201.91.58.58:4500->172.0.1.100:4500,ifindex=3....
ike 0: IKEv1 exchange=Informational id=f58d54ee1e06c362/6b13e0e54ab27d49:0ea3fd83 len=92
ike 0: in F58D54EE1E06C3626B13E0E54AB27D49081005010EA3FD830000005C26CE06723802F1D9FFFC24CF50230BEEB6EF01BC5FA0798437A0B8AD3C840039424E99BF9A15B36E9BFE71AF11DE05D0B8EE623578F65BF5E1156316351809EB
ike 0:HUB_0:2638: dec F58D54EE1E06C3626B13E0E54AB27D49081005010EA3FD830000005C0B00001887EA8771C873A6C9870C973B9D778E6B0A6D46A4000000200000000101108D29F58D54EE1E06C3626B13E0E54AB27D49000000010000000000000000
ike 0:HUB_0:2638: notify msg received: R-U-THERE-ACK
ike 0: comes 201.91.58.58:4500->172.0.1.100:4500,ifindex=3....
ike 0: IKEv1 exchange=Quick id=f58d54ee1e06c362/6b13e0e54ab27d49:36da9bbe len=316
ike 0: in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
ike 0:HUB_0:2638:2704: responder received first quick-mode message
ike 0:HUB_0:2638: dec F58D54EE1E06C3626B13E0E54AB27D490810200136DA9BBE0000013C010000182C9DC576C496F47C219F5BBC359FC43B24BEFE250A000040000000010000000100000034010304015BBDE2740000002801030000800400038001000180020708800100020002000400465000800500028003000204000018651F2C23552FBCC9C9607C5B6BBB5178679DF42C050000845B44B28DACB93787F0A0B711E915932931991E8DD638B0D43875D87874FB1C54E0BBEE47B01E259B07224EFC36F1EEA1FD1E7FBB45836E4518E9122D1E84BC38E7AFEB077F06D1B1B3B6F2BE0FEF7DFFC13545DB63E584C31715F17980B7B40823CD92150D7115DE8BFDFC4CBC14194CBF1AF4122A8147ED2A5238808EEA0E6B0500001004000000000000000000000000000010040000000000000000000000000000000000000000000000
ike 0:HUB_0:2638:2704: peer proposal is: peer:0:0.0.0.0-255.255.255.255:0, me:0:0.0.0.0-255.255.255.255:0
ike 0:HUB_0:2638:VPN:2704: trying
ike 0:HUB_0:2638:2704: wildcard is not an acceptable destination subnet
ike 0:HUB_0:2638:2704: no matching phase2 found
ike 0:HUB_0:2638:2704: failed to get responder proposal
ike 0:HUB_0:2638: error processing quick-mode message from 201.91.58.58 as responder
ike 0:HUB_0: link is idle 3 172.0.1.100->201.91.58.58:4500 dpd=1 seqno=2
ike 0:HUB_0:2638: send IKEv1 DPD probe, seqno 2
ike 0:HUB_0:2638: enc F58D54EE1E06C3626B13E0E54AB27D49081005014CB3D819000000540B00
 
 
Can you help me please?
Thanks

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Richard Burts
Hall of Fame
Hall of Fame

‎01-22-2016 10:32 AM

There are a couple of things that we might look at as potential problems. But the biggest problem that I see is that the Fortigate appears to be configured to create a standard IPsec site to site VPN. But the router is configured to use Virtual Tunnel Interface. VTI is a newer implementation in Cisco IOS that will do IPsec over the configured tunnel. This is a very nice implementation as long as the other end is also doing VTI. But the Fortigate is not doing VTI. So my first suggestion is that the people who administer the router need to remove the VTI config and to replace it with the standard IPsec crypto map configuration.

HTH

Rick

HTH

Rick
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