Layer 2 Tunneling Protocol

Definition & Meaning

Last updated 4 month ago

What is Layer 2 Tunneling Protocol (L2TP)?

What does L2TP stand for?

itMyt Explains Layer 2 Tunneling Protocol:

Layer 2 Tunneling Protocol (L2TP) is a Computer Networking protocol used by Internet provider vendors (ISPs) to enable Digital Private Network (VPN) operations. L2TP is just like the Data Link Layer Protocol within the OSI reference Model, but it's far truely a consultation Layer protocol.

A User Datagram Protocol (UDP) port is used for L2TP communique. Because it does no longer provide any safety for facts such as Encryption and Confidentiality, an encryption protocol such as Internet Protocol safety (IPsec) is often used with L2TP.

This time period is also referred to as Virtual Dialup Protocol.

What Does Layer 2 Tunneling Protocol Mean?

Officially published in 1999, L2TP is an Extension of Point-to-Point Tunneling Protocol (PPTP). It is the Merger of two protocols, one from Microsoft (PPTP) and one from Cisco. L2TP saves the dial-up price and overhead for any person willing to remotely hook up with a site office. L2TP is referred to as Virtual Dialup Protocol due to its service of the Point-to-Point Protocol (PPP) extension over Internet.

For Instance, suppose that a consumer in New York is attached with a traditional dial-up Modem and is looking to talk with someone in Sydney. For this motive, the user gets a connection and establishes a devoted Hyperlink from New York to Sydney. This Committed dial-up link will use a Public Switched Telephone Network (PSTN) and offer the lowest inFormation Switch speed due to shared PSTN Media. Thousands of different users are the use of the identical medium, so the user may have an normal pace of 33 Kbps or worse.

Instead, the user ought to use L2TP wherein PPP is used and configured at both ends (the ISP and the user Web Page). Following the a hit Authentication of a person request, a tunnel is created for consumer information. When the tunnel is created, the consumer is open to start verbal excHange.

Advantages of L2TP consist of:

  • High facts protection is supplied for crucial Packages.
  • High-stage encryption is used so that vital Data is always secure and remains Private.
  • It provides superb and efficient connectivity.
  • It is price-effective and does no longer have overhead price after Implementation.
  • It is reliable, Scalable, speedy and bendy.
  • It is an industry-general first-rate for the company area.
  • It has the Great Authorization coverage for customers with VPN authentication.

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