User manual

Explanation of Values
Exchange type: Main mode or aggressive mode
Cookies: A random number to identify the negotiation
Encryption algorithm: Cipher
Key length: Cipher key length
Hash algorithm: Hash
Authentication method: Pre-shared key or certificate
Group description: Diffie Hellman (DH) group
Life type: Seconds or kilobytes
Life duration: No of seconds or kilobytes
VID: The IPsec software vendor plus what standards are supported. For example, NAT-T
Step 2. Server Responds to Client
A typical response from the server is shown below. This must contain a proposal that is identical to
one of the choices from the client list above. If no match was found by the server then a "No
proposal chosen" message will be seen, tunnel setup will fail and the ikesnoop command output will
stop at this point.
IkeSnoop: Sending IKE packet to 192.168.0.10:500 Exchange type :
Identity Protection (main mode) ISAKMP Version : 1.0
Flags :
Cookies : 0x6098238b67d97ea6 -> 0x5e347cb76e95a
Message ID : 0x00000000
Packet length : 224 bytes
# payloads : 8
Payloads:
SA (Security Association)
Payload data length : 52 bytes
DOI : 1 (IPsec DOI)
Proposal 1/1
Protocol 1/1
Protocol ID : ISAKMP
SPI Size : 0
Transform 1/1
Transform ID : IKE
Encryption algorithm : Rijndael-cbc (aes)
Key length : 128
Hash algorithm : MD5
Authentication method : Pre-Shared Key
Group description : MODP 1024
Life type : Seconds
Life duration : 43200
VID (Vendor ID)
Payload data length : 16 bytes
Vendor ID : 8f 9c c9 4e 01 24 8e cd f1 47 59 4c 28 4b 21 3b
Description : SSH Communications Security QuickSec 2.1.0
VID (Vendor ID)
Payload data length : 16 bytes
Vendor ID : 27 ba b5 dc 01 ea 07 60 ea 4e 31 90 ac 27 c0 d0
Description : draft-stenberg-ipsec-nat-traversal-01
VID (Vendor ID)
Payload data length : 16 bytes
Vendor ID : 61 05 c4 22 e7 68 47 e4 3f 96 84 80 12 92 ae cd
Description : draft-stenberg-ipsec-nat-traversal-02
VID (Vendor ID)
Payload data length : 16 bytes
Vendor ID : 44 85 15 2d 18 b6 bb cd 0b e8 a8 46 95 79 dd cc
Description : draft-ietf-ipsec-nat-t-ike-00
VID (Vendor ID)
9.4.5. Troubleshooting with ikesnoop Chapter 9. VPN
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