
ZyWALL 110/310/1100 Series User’s Guide
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L2TP VPN
24.1 Overview
L2TP VPN uses the L2TP and IPSec client software included in remote users’ Android, iOS, or
Windows operating systems for secure connections to the network behind the ZyWALL. The remote
users do not need their own IPSec gateways or third-party VPN client software.
Figure 226
L2TP VPN Overview
24.1.1 What You Can Do in this Chapter
• Use the L2TP VPN screen (see
) to configure the ZyWALL’s L2TP VPN
settings.
24.1.2 What You Need to Know
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
information on IPSec VPN.
IPSec Configuration Required for L2TP VPN
You must configure an IPSec VPN connection for L2TP VPN to use (see
details). The IPSec VPN connection must:
• Be enabled.
• Use transport mode.
• Not be a manual key VPN connection.
• Use Pre-Shared Key authentication.
• Use a VPN gateway with the Secure Gateway set to 0.0.0.0 if you need to allow L2TP VPN
clients to connect from more than one IP address.
Summary of Contents for ZyWALL 110 Series
Page 16: ...ZyWALL 110 310 1100 Series User s Guide 16...
Page 32: ...Chapter 1 Introduction ZyWALL 110 310 1100 Series User s Guide 32...
Page 42: ...Chapter 3 Hardware Introduction ZyWALL 110 310 1100 Series User s Guide 42...
Page 68: ...Chapter 4 Quick Setup Wizards ZyWALL 110 310 1100 Series User s Guide 68...
Page 176: ...Chapter 7 Interfaces ZyWALL 110 310 1100 Series User s Guide 176...
Page 186: ...Chapter 8 Trunk ZyWALL 110 310 1100 Series User s Guide 186...
Page 210: ...Chapter 10 Routing Protocols ZyWALL 110 310 1100 Series User s Guide 210...
Page 220: ...Chapter 12 DDNS ZyWALL 110 310 1100 Series User s Guide 220...
Page 228: ...Chapter 13 NAT ZyWALL 110 310 1100 Series User s Guide 228...
Page 240: ...Chapter 15 ALG ZyWALL 110 310 1100 Series User s Guide 240...
Page 246: ...Chapter 16 IP MAC Binding ZyWALL 110 310 1100 Series User s Guide 246...
Page 263: ...Chapter 18 Authentication Policy ZyWALL 110 310 1100 Series User s Guide 263...
Page 264: ...Chapter 18 Authentication Policy ZyWALL 110 310 1100 Series User s Guide 264...
Page 316: ...Chapter 20 IPSec VPN ZyWALL 110 310 1100 Series User s Guide 316...
Page 340: ...Chapter 22 SSL User Screens ZyWALL 110 310 1100 Series User s Guide 340...
Page 442: ...Chapter 36 DHCPv6 ZyWALL 110 310 1100 Series User s Guide 442...
Page 540: ...Appendix A Legal Information ZyWALL 110 310 1100 Series User s Guide 540...
Page 558: ...Index ZyWALL 110 310 1100 Series User s Guide 558...
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