The Cloud Edge gateway can be an edge device (directly connected to the Internet) or an internal device (behind a NAT device configured for port forwarding or NAT rules).
Cloud Edge supports Site–to–Site VPNs in a dual WAN scenario for Cloud Edge gateways running Cloud Edge 6.0 or later.
For gateways running Cloud Edge 5.x or earlier, you can configure only a single WAN for VPN support, even if dual-WAN access is enabled.
Certain Cloud Edge gateway models do not support VPN.