Zyxel WireGuard Setup Guide

Reaching more than one VLAN

One LAN needs nothing beyond this guide. If the site has several VLANs (a camera VLAN, a PBX VLAN, a guest network), there is one more thing to know.

ProxyLink gives every gateway its own private address range and translates between that range and your real LAN addresses. That is what lets two different clients both use 192.168.1.0/24 without colliding. The translation rules live in the PostUp and PostDown lines of the config we generate.

Zyxel cannot run those rules for itself, so extra VLANs are routed directly instead of being translated. Two consequences worth knowing:

• Add the VLAN under your gateway → VLAN subnets as normal, then add the equivalent forwarding rules for that VLAN on the device yourself.
• Because the range is not translated, ProxyLink checks it does not collide with another customer's. A very common range that is already in use elsewhere may be refused.

If a site has several VLANs and you would rather not maintain that by hand, put a small Linux box (a Raspberry Pi is plenty) or a MikroTik beside the router and use it as the gateway. Both are managed, so every VLAN is handled automatically and the existing router is left alone. See the Linux and MikroTik guides.

What you get once the tunnel is up

• Browser RDP, VNC, and SSH — open a terminal or remote desktop to any device behind the tunnel straight from the ProxyLink dashboard. No client software, no open ports on your side.
• Proxy links — share an HTTPS URL that forwards to any internal web interface (NAS, NVR cameras, PBX admin panels, router UIs) with ProxyLink login in front of it.
• No public exposure — the device keeps zero open ports and needs no static IP. The tunnel is outbound-only WireGuard to EU-hosted infrastructure. Read more about agentless remote access and NIS2 compliance.