Meraki group policies are applied based on MAC address. https://documentation.meraki.com/Platform_Management/Dashboard_Administration/Operate_and_Maintain/How-Tos/Creating_and_Applying_Group_Policies It sounds like what you want to do is create a WiFi firewall rule to "deny all", and then apply a group policy to each client to override that firewall policy. The "Allow List" is an example of a built-in group policy that overrides firewall rules for that client, allowing it access. More info about WiFi firewall rules. https://documentation.meraki.com/Wireless/Operate_and_Maintain/How_Tos/Firewall_and_Traffic_Shaping/MR_Firewall_Rules
... View more