How to establish Nebula VPN between Security router?

Zyxel_Jerry

To configure a Site-to-Site VPN using Nebula, follow the steps below:

Navigate to Site-wide > Configure > Security router > Site-to-Site VPN

Ensure VPN is enabled on at least one LAN subnet:
At least one LAN subnet must have the 'Use VPN' option enabled.

Enable SD-VPN:
Toggle the setting to enable SD-VPN functionality.

Set VPN Topology:
Choose "Site-to-Site" as the VPN topology.

Advanced Options (for routers behind NAT):
Click "ADVANCED OPTIONS".
If the security router is behind NAT, set the IP address type to "Custom" and select "WAN: Auto" under the NAT Traversal section.

Confirm Settings on Both Sites:
Make sure VPN settings are correctly enabled on both security router sites.