In this article we will discuss L2TP, will make brief discussion on L2TP, last article we discuss about WiMAX.

Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs) or as part of the delivery of services by ISPs. It does not provide any encryption or confidentiality by itself.

Layer 2 Tunneling Protocol (L2TP) is built in to almost all modern operating systems and VPN-capable devices. … On its own, L2TP does not provide any encryption or confidentiality to traffic that passes through it, so it is usually implemented with the IPsec authentication suite (L2TP/IPsec).

L2TP usually uses an authentication protocol, IPSec (Internet Protocol Security). It uses it for strong encryption and authentication. IPSec gives it an ultimate edge on some other most used protocols like PPTP. The protocol uses UDP ports 1701. L2TP is a VPN protocol that doesn’t offer any encryption or protection from the traffic that passes through the connection. For this reason, it’s usually paired with IPSec, which is an encryption protocol.

Layer 2 Tunneling Protocol (L2TP) is a computer networking protocol used by Internet service providers (ISPs) to enable virtual private network (VPN) operations. L2TP is similar to the Data Link Layer Protocol in the OSI reference model, but it is actually a session layer protocol.


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