Regarding VPN Phase-1 Aggressive mode

[palsukh2002]

Is there any document which shows the steps which happens in case of Aggressive mode of

establishing Phase-1 SA since there are only 3 messages exchaged in case of aggressive mode and how the identity

of each peer is protected from unauthorized peers.

[Collin Clark]

I hope this links helps.

http://www.cisco.com/en/US/products/ps6120/products_tech_note09186a00807e0aca.shtml