... agreement /exchange protocol • SKEME, another key- exchange protocol © 2001, Cisco Systems, Inc Access VPN v1 0 Internet Key Exchange Protocol -6 IKE is a hybrid protocol based on the Internet Security ... 2001, Cisco Systems, Inc Access VPN v1 0 Internet Key Exchange Protocol -5 The Internet Key Exchange (IKE) protocol, described in RFC 2409, is a key management protocol standard which is used in conjunction ... the "Internet Security Association and Key Management Protocol (ISAKMP)" standard Oakley—A key exchange protocol that defines how to derive authenticated keying material Skeme —A key exchange protocol...