| # |
| # Layer Two Tunneling Protocol (L2TP) |
| # |
| |
| menuconfig L2TP |
| tristate "Layer Two Tunneling Protocol (L2TP)" |
| depends on INET |
| ---help--- |
| Layer Two Tunneling Protocol |
| |
| From RFC 2661 <http://www.ietf.org/rfc/rfc2661.txt>. |
| |
| L2TP facilitates the tunneling of packets across an |
| intervening network in a way that is as transparent as |
| possible to both end-users and applications. |
| |
| L2TP is often used to tunnel PPP traffic over IP |
| tunnels. One IP tunnel may carry thousands of individual PPP |
| connections. L2TP is also used as a VPN protocol, popular |
| with home workers to connect to their offices. |
| |
| L2TPv3 allows other protocols as well as PPP to be carried |
| over L2TP tunnels. L2TPv3 is defined in RFC 3931 |
| <http://www.ietf.org/rfc/rfc3931.txt>. |
| |
| The kernel component handles only L2TP data packets: a |
| userland daemon handles L2TP the control protocol (tunnel |
| and session setup). One such daemon is OpenL2TP |
| (http://openl2tp.org/). |
| |
| If you don't need L2TP, say N. To compile all L2TP code as |
| modules, choose M here. |
| |
| config L2TP_V3 |
| bool "L2TPv3 support (EXPERIMENTAL)" |
| depends on EXPERIMENTAL && L2TP |
| help |
| Layer Two Tunneling Protocol Version 3 |
| |
| From RFC 3931 <http://www.ietf.org/rfc/rfc3931.txt>. |
| |
| The Layer Two Tunneling Protocol (L2TP) provides a dynamic |
| mechanism for tunneling Layer 2 (L2) "circuits" across a |
| packet-oriented data network (e.g., over IP). L2TP, as |
| originally defined in RFC 2661, is a standard method for |
| tunneling Point-to-Point Protocol (PPP) [RFC1661] sessions. |
| L2TP has since been adopted for tunneling a number of other |
| L2 protocols, including ATM, Frame Relay, HDLC and even raw |
| ethernet frames. |
| |
| If you are connecting to L2TPv3 equipment, or you want to |
| tunnel raw ethernet frames using L2TP, say Y here. If |
| unsure, say N. |
