The IPSec pieces - IKE
  IKE (Internet Key Exchange Protocol)
  Responsible for negotiating SA (Security Associations) between hosts
  IKE protocol based on 
  ISAKMP (Internet Security Association and Key Management Protocol)
  Oakley Key Determination Protocol
  Runs on UDP port 500
  Requires PSK (Pre-shared keys) or pubkey for authentication of peer.

Copyright 2003, Bri Hatch of Onsight, Inc.

Presented at Real World Linux, 2003.

Presentation created using vim and MagicPoint.