SonicWALL 3 - page 256

SONICWALL SONICOS STANDARD 3.0 ADMINISTRATOR’S GUIDE 237
VPN > L2TP Server
C HAPTER
39
Chapter 39: Configuring L2TP Server Settings
VPN > L2TP Server
You can use Layer 2 Tunneling Protocol (L2TP) to create VPN over public networks such as the
Internet. L2TP provides interoperability between different VPN vendors that protocols such as PPTP
and L2F do not, although L2TP combines the best of both protocols and is an extension of them.
L2TP is supported on Microsoft Windows 2000 Operating System.
L2TP supports several of the authentication options supported by PPP, including Password
Authentication Protocol (PAP), Challenge Handshake Authentication Protocol (CHAP), and Microsoft
Challenge Handshake Authentication Protocol (MS-CHAP). You can use L2TP to authenticate the
endpoints of a VPN tunnel to provide additional security, and you can implement it with IPSec to
provide a secure, encrypted VPN solution.
Note: You must enable Group VPN before configuring the SonicWALL L2TP feature. Also, the
encryption method and shared secret must match the L2TP client settings.