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22.1 Overview
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
(defined by the IPSec VPN rule Default_L2TPVPN, refer to
established first and then an L2TP tunnel is built inside it. See
information on IPSec VPN.
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 SBG3500-N. The remote users do
not need their own IPSec gateways or VPN client software.
Figure 129 L2TP VPN Overview
22.1.1 What You Can Do in this Chapter
• Use the L2TP VPN screen to configure the SBG3500-N's L2TP VPN settings
page
281).
• Use the Monitor screen to view settings for L2TP clients
Note: You need to configure the Default_L2TPVPN VPN rule in the VPN > IPSec >
IPSec Setup screen. See
SBG3500-N000 User's Guide
C
HAPTER
Section 20.4.3 on page
(Chapter 22 on page
Chapter 20 on page 256
L2TP VPN
266) is
Chapter 20 on page 256
for
(Section 22.2 on
282).
for information on IPSec VPN.
2 2
280
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Troubleshooting
