B) B. Point-to-Point Tunneling Protocol (PPTP) C) C. Layer 2 Forwarding (L2F) Protocol D) D. Point-to-Point Protocol (PPP)

Mar 13, 2020 What is Layer 2 Tunneling Protocol (L2TP)? - Definition Aug 18, 2011 VPN protocols and which is the best to use | TechRadar May 19, 2020 What Is a Virtual Private Network?

Dec 05, 2019 · L2F is a Cisco channeling protocol that uses features such as virtual dial-up networks for well-secured data packet transport. L2F is similar in its functionality to the Point-to-Point Tunneling Protocol (PPTP) that was designed by Microsoft.

L2F was designed by Cisco Systems (RFC 2341) to support the creation of secure VPDNs via tunnels over public infrastructure. The primary goal was (quoted from RFC 2341) "to divorce the location of the initial dial-up server from the location at which the dial-up protocol connection is terminated and access to the network provided." L2F (Layer Two Forwarding de Cisco) | Textos Científicos Concepto Protocolo desarrollado por Cisco, a diferencia del PPTP el protocolo L2F no depende de IP con lo cual es capaz de trabajar directamente bajo otros protocolos. Utiliza PPP para la autenticación de usuarios remotos. Los túneles que crea pueden soportar más de una conexión.

L2F, or Layer 2 Forwarding, is a tunneling protocol developed by Cisco Systems, Inc. to establish virtual private network connections over the Internet. L2F does not provide encryption or confidentiality by itself; It relies on the protocol being tunneled to provide privacy. L2F was specifically designed to tunnel Point-to-Point Protocol (PPP

40 Network Protocols with Port NOs. Transport Protocols TRANSPORT PROTOCOLS: MEANINGS: 1.File Transfer Protocol (FTP) 20 and 21: TCP: It is a protocol that carries data guarantees that data will be delivered properly. 2.Secure Shell (SSH) 22: TCP and UDP: It is a cryptographic network protocol used to secure data communication. 3.Telnet: 23: TCP: It is the used for remote management protocol for L2F and L2TP Overview - CCIE Practical Studies: Security Layer 2 Forwarding (L2F) Protocol is an older tunneling protocol. Layer 2 Tunneling Protocol (L2TP) is updated and has more features. Both of these protocols are designed to extend the PPP model by separating the Layer 2 (L2) termination point and the PPP termination point from one network access server (NAS) into two different devices.