IKE

Internet key exchange

Protocol used to establish a security association in the IPsec protocol suite using the Diffie-Hellman Key exchange to establish a shared secret session.

IKE is an IPsec standard protocol used to ensure security for VPN negotiation and remote host or network access. Specified in IETF Request for Comments (RFC) 2409, IKE defines an automatic means of negotiation and authentication for IPsec SAs. IKE protocol ensures security for SA communication without the preconfiguration that would otherwise be required.