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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)
Payload data length : 16 bytes
Vendor ID : cd 60 46 43 35 df 21 f8 7c fd b2 fc 68 b6 a4 48
Description : draft-ietf-ipsec-nat-t-ike-02
VID (Vendor ID)
Payload data length : 16 bytes
Vendor ID : 90 cb 80 91 3e bb 69 6e 08 63 81 b5 ec 42 7b 1f
Description : draft-ietf-ipsec-nat-t-ike-02
VID (Vendor ID)
Payload data length : 16 bytes
Vendor ID : 7d 94 19 a6 53 10 ca 6f 2c 17 9d 92 15 52 9d 56
Description : draft-ietf-ipsec-nat-t-ike-03
Step 3. Clients Begins Key Exchange
The server has accepted a proposal at this point and the client now begins a key exchange. In
addition, NAT detection payloads are sent to detect if NAT is being used.
IkeSnoop: Received IKE packet from 192.168.0.10:500 Exchange type :
Identity Protection (main mode) ISAKMP Version : 1.0
Flags :
Cookies : 0x6098238b67d97ea6 -> 0x5e347cb76e95a
Message ID : 0x00000000
Packet length : 220 bytes
# payloads : 4
Payloads:
KE (Key Exchange)
Payload data length : 128 bytes
NONCE (Nonce)
Payload data length : 16 bytes
NAT-D (NAT Detection)
Payload data length : 16 bytes
9.4.5. Troubleshooting with ikesnoop Chapter 9. VPN
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