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VPN
L2TP over IPSec
L2PT over IPSec
internet protocol security
*IPSEC
Layer 2 Tunneling Protocol (L2TP)
B.UnicastC.KerberosD.Resourse Reservation Protocol(RSVP)
IP Security Protocol (IPSec)
IPSec is an internet security protocol. The protocol is used to ensure private and secure communications over Internet Protocol networks. Defense is provided for network based attacks, corruption and theft of data, and takeover of computer administrative properties.
IPSEC is a portmanteau of the words 'internet protocol security,' which is a framework of open standards, that allows very secure communication in a network.
Internet Key Exchange
IPsec (IP security) is a suite of protocols for securing Internet Protocol (IP) communications by authenticating and/or encrypting each IP packet in a data stream. IPsec also includes protocols for cryptographic key establishment.