ZyXEL Communications VPN Series Handbook page 338

How to Configure the L2TP VPN with Apple MAC OS X 10.11
Operating System
This is an example of using the L2TP VPN and VPN client software included in
Apple MAC OS X 10.11 El Capitan operating systems. When the VPN tunnel is
configured, users can securely access the network behind the ZyWALL/USG and
allow traffic from L2TP clients to go to the Internet from an Apple computer.
ZyWALL/USG L2TP VPN with Apple MAC OS X 10.11 El Capitan
Note: All network IP addresses and subnet masks are used as examples in this article.
Please replace them with your actual network IP addresses and subnet masks. This example
was tested using USG310 (Firmware Version: ZLD 4.25) and Apple MAC (Version: OS X10.11 El
Capitan).
Set Up the L2TP VPN Tunnel on the ZyWALL/USG
In the ZyWALL/USG, go to Quick Setup > VPN Setup Wizard, use the VPN Settings
for L2TP VPN Settings wizard to create a L2TP VPN rule that can be used with the
MAC OS X clients. Click Next.
Quick Setup > VPN Setup Wizard > Welcome
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