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Set up new WLAN (SSID) for guest network on UniFi Controller

In many environments, it makes sense to offer a separate guest network. This allows visitors or external service providers to securely access the Internet without putting the internal company network at risk. This article explains how to create a new SSID on a UniFi Controller and assign it to an existing VLAN (e.g. VLAN for guests).

Requirements

Create a new SSID for the guest network

Open UniFi Controller

  • Log in to your UniFi Controller.
  • Go to Settings in the menu on the left.

Call up WLAN settings

  • Select WiFi in the left-hand area.
  • You will see an overview of your existing WLAN networks (SSIDs).

Create new SSID

  • Click on Create New.
  • Assign a name for the network, e.g. GUEST.
  • Set a password that guests should use. Make sure it is sufficiently complex.
UniFi WiFi settings
UniFi WiFi settings

Assign VLAN

  • In the settings under Network, you can now define the previously created VLAN.
  • Select the previously created VLAN for the guest network (e.g. WLAN Guest).
UniFi WiFi - create SSID
UniFi WiFi - create SSID

Advanced settings (optional)

  • Under Advanced, you can configure further options, e.g. Guest Portal, Hotspot 2.0, Captive Portal or Bandwidth Limits.
  • If required, activate Guest Policies to further secure the network (e.g. isolate clients from each other).

Save and apply

  • Finally, click on Add WiFi Network to create the new SSID.
  • After a short time, the WLAN should be visible to guests.

Checking the configuration

  • Connection attempt: Connect to the new WLAN as a test and check whether you receive a correct IP address from the guest VLAN (if a DHCP Server has already been set up in the network).
  • Firewall rules: Check Sophos Firewall (or your gateway firewall) to see whether the appropriate rules apply.
  • Client isolation: Ensure that guests can only access the Internet and cannot reach any other VLANs or devices in the internal network.