Guest Wi-Fi
Also known as: Guest WLAN · Visitor Wi-Fi
Guest Wi-Fi is a separate wireless network for visitors that should be technically isolated from the internal company network.
The point of guest Wi-Fi is to give visitors or customers internet access without letting them reach internal devices like servers, printers, or till systems. The actual separation doesn't come from the network's name — it comes from the network engineering behind it.
Done properly, guest Wi-Fi runs on its own VLAN with its own SSID, often paired with a captive portal, a bandwidth cap, and a firewall rule blocking access to the internal network. It can run on the same access points as the internal Wi-Fi while still broadcasting a separate, isolated network.
The most common mistake in practice: a separate guest SSID exists, but it technically sits on the same network as the till system, servers, or office PCs. The distinct name creates the impression of separation that doesn't actually exist yet.
What it means in practice
It's common to find guest Wi-Fi sitting on the same network as the till system. This is easy to check — can a guest device actually reach the till on the network? NDVDL sets up guest Wi-Fi with its own VLAN by default, not just a separate SSID.
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