Information, Computer and Network Security Terms Glossary and Dictionary

L2F: Layer 2 Forward Protocol

Layer 2 Forwarding (L2F), a protocol originally developed by Cisco, uses tunneling of PPP over IP to create a virtual extension of a dial-up link across a network, initiated by the dial-up server and transparent to the dial-up user. L2F is used to establish a secure tunnel across a public infrastructure (such as the Internet) that connects an ISP POP to an enterprise home gateway. This tunnel creates a virtual point-to-point connection between the user and the enterprise customer's network.

Related Terms

L2F: Layer 2 Forward Protocol