How To Configure Gre Over Ipsec Vpn Tunnel - ZyXEL Communications ZyWALL 110 Handbook & Instructions

How to Configure GRE over IPSec VPN Tunnel

This example shows how to use the VPN Setup Wizard to create a GRE over
IPSec VPN tunnel between ZyWALL/USG devices. The example instructs how to
configure the VPN tunnel between each site. When the GRE over IPSec VPN
tunnel is configured, each site can be accessed securely.
Figure 21 ZyWALL/USG GRE over IPSec VPN
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 USG110 (Firmware Version: ZLD 4.15) and ZyWALL 310
(Firmware Version: ZLD 4.15).
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