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SonicOS Enhanced 4.0 Administrator Guide
CHAPTER 51
Chapter 51: Configuring L2TP Server
VPN > L2TP Server
The SonicWALL security appliance can terminate L2TP-over-IPsec connections from incoming
Microsoft Windows 2000 and Windows XP clients. In situations where running the SonicWALL
Global VPN Client is not possible, you can use the SonicWALL L2TP Server to provide secure
access to resources behind the SonicWALL security appliances.
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 For more complete information on configuring the L2TP Server, see the technote
Configuring the L2TP Server in SonicOS located on the SonicWALL documentation site:
http://www.sonicwall.com/us/Support.html.