Dead Peer Detection (DPD) is a method that allows detection of unreachable peer. DPD negotiation procedure and two new ISAKMP NOTIFY messages. Specifically, DPD is negotiated via an exchange of the DPD ISAKMP Vendor ID payload, which is sent in the I...
Correction of IP protocol
Authentication Service - AH (Authentication Header) and IP protocol 51.Encryption Services - ESP (Encapsulating Security Payload) and IP protocol of 50.
