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Connection problem of IP-Sec VPN between Cisco router and checkpoint R80.10 version

Naive
Level 1
Level 1

Hello Guys,

I am unable to contact cisco router and Firewall. getting error: %CRYPTO-4-RECVD_PKT_NOT_IPSEC: Rec'd packet not an IPSEC packet. (ip) vrf/dest_addr= /160.1.1.1, src_addr= 150.1.1.1, prot= 1.

I saw packets are not getting decrypted....

 

Below are ISAKMP and IPSEC configuration:

 

vIOS-PK-02#show crypto isakmp sa
IPv4 Crypto ISAKMP SA
dst             src             state          conn-id status
136.1.122.2     136.1.122.12    QM_IDLE           1009 ACTIVE

 

vIOS-PK-02#show crypto ipsec sa
interface: GigabitEthernet0/0
    Crypto map tag: vpn_map, local addr 136.1.122.2
   protected vrf: (none)
   local  ident (addr/mask/prot/port): (160.1.1.0/255.255.255.0/0/0)
   remote ident (addr/mask/prot/port): (150.1.1.0/255.255.255.0/0/0)
   current_peer 136.1.122.12 port 500
     PERMIT, flags={origin_is_acl,}
    #pkts encaps: 4, #pkts encrypt: 4, #pkts digest: 4
    #pkts decaps: 0, #pkts decrypt: 0, #pkts verify: 0
    #pkts compressed: 0, #pkts decompressed: 0
    #pkts not compressed: 0, #pkts compr. failed: 0
    #pkts not decompressed: 0, #pkts decompress failed: 0
    #send errors 0, #recv errors 0
     local crypto endpt.: 136.1.122.2, remote crypto endpt.: 136.1.122.12
     plaintext mtu 1446, path mtu 1500, ip mtu 1500, ip mtu idb GigabitEthernet0/0
     current outbound spi: 0x3019AB24(806988580)
     PFS (Y/N): N, DH group: none
     inbound esp sas:
      spi: 0xAAE08B57(2866842455)
        transform: esp-3des esp-md5-hmac ,
        in use settings ={Tunnel, }
        conn id: 13, flow_id: SW:13, sibling_flags 80004040, crypto map: vpn_map
        sa timing: remaining key lifetime (k/sec): (4358849/2907)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE(ACTIVE)
     inbound ah sas:
     inbound pcp sas:
     outbound esp sas:
      spi: 0x3019AB24(806988580)
        transform: esp-3des esp-md5-hmac ,
        in use settings ={Tunnel, }
        conn id: 14, flow_id: SW:14, sibling_flags 80004040, crypto map: vpn_map
        sa timing: remaining key lifetime (k/sec): (4358848/2907)
        IV size: 8 bytes
        replay detection support: Y
        Status: ACTIVE(ACTIVE)
     outbound ah sas:
     outbound pcp sas:

 

2 Replies 2

marce1000
VIP
VIP

 

 - Check this document for guidelines as how to configure vpn between the router and checkpoint :

       https://www.cisco.com/c/en/us/support/docs/security/ios-easy-vpn/23784-ipsec-checkpt.html

 M.



-- Each morning when I wake up and look into the mirror I always say ' Why am I so brilliant ? '
    When the mirror will then always repond to me with ' The only thing that exceeds your brilliance is your beauty! '

@Naiveit looks like your router is encrypting the traffic...

 

#pkts encaps: 4, #pkts encrypt: 4, #pkts digest: 4
 #pkts decaps: 0, #pkts decrypt: 0, #pkts verify: 0

 

...but nothing is being decrypted.

 

Can you check the configuration of the remote CheckPoint firewall and confirm they are not unintentially natting the traffic.

 

HTH