L2Tp Vpn; Chapter 27 L2Tp Vpn; Overview; What You Can Do In The L2Tp Vpn Screens - ZyXEL Communications ZyWall USG 2000 User Manual

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H A P T E R

27.1 Overview

L2TP VPN lets remote users use the L2TP and IPSec client software included with
their computers' operating systems to securely connect to the network behind the
ZyWALL. The remote users do not need their own IPSec gateways or VPN client
software.
Figure 265 L2TP VPN Overview

27.1.1 What You Can Do in the L2TP VPN Screens

• Use the L2TP VPN screen (see
ZyWALL's L2TP VPN settings.
• Use the L2TP VPN screen (see
manage the ZyWALL's connected L2TP VPN sessions.

27.1.2 What You Need to Know About L2TP VPN

The Layer 2 Tunneling Protocol (L2TP) works at layer 2 (the data link layer) to
tunnel network traffic between two peers over another network (like the Internet).
In L2TP VPN, an IPSec VPN tunnel is established first and then an L2TP tunnel is
built inside it. See
IPSec Configuration Required for L2TP VPN
You must configure an IPSec VPN connection for L2TP VPN to use (see
on page 329
ZyWALL USG 2000 User's Guide
Section 27.2 on page
Section 27.3 on page
Chapter 21 on page 329
for details). The IPSec VPN connection must:
27

L2TP VPN

409) to configure the
410) to display and
for information on IPSec VPN.
Chapter 21
407