Information, Computer and Network Security Terms Glossary and Dictionary

Aggressive Mode

Aggressive Mode, one of the two IKE policy modes (aggressive and main), establishes an authenticated IKE SA and keys. Aggressive mode eliminates several steps during IKE authentication negotiation (phase 1) between two or more IPSec peers. Aggressive mode is faster than Main Mode but not as secure. However, aggressive mode uses half the number of messages, has less negotiation power, and does not provide identity protection.

Related Terms

Aggressive Mode