In aggressive mode, how many packets are exchanged to establish phase 1 of the ipsec tunnel?
In aggressive mode, a total of three packets are exchanged to establish phase 1 of the IPsec tunnel.
In aggressive mode, the establishment of phase 1 of the IPSec tunnel involves a series of packet exchanges between the two communicating parties. Here is a step-by-step breakdown of the packet exchange process in aggressive mode:
1. Initiator sends the first message (packet 1) to the responder, including its proposal for the Diffie-Hellman (DH) group, encryption algorithms, hash algorithms, and other related information.
2. Responder receives packet 1 and sends its own proposal (packet 2) back to the initiator, which includes its reply for the DH group, encryption algorithms, hash algorithms, and other related information.
3. Initiator receives packet 2 and perceives that the responder has accepted its proposal. It then proceeds to send another message (packet 3) to the responder, including its Diffie-Hellman public key.
4. Responder receives packet 3 and generates its own Diffie-Hellman public key. It then sends this public key (packet 4) back to the initiator.
5. Initiator receives packet 4 and calculates the shared secret using its own secret key and the responder's public key. It then sends a message (packet 5) to the responder, confirming the shared secret.
6. Responder receives packet 5 and calculates the shared secret using its secret key and the initiator's public key. It then sends a message (packet 6) to the initiator, confirming the shared secret.
7. Initiator and responder have now completed phase 1 of the IPSec tunnel establishment in aggressive mode with the successful exchange of packets 1 to 6.
In total, six packets are exchanged between the initiator and responder to establish phase 1 of the IPSec tunnel in aggressive mode.