Yes, we can do this by going to Configure> Open the Network Policy> Open the SSID> Open the User profile in use> Toggle Firewall to ON> In the IP Firewall area make a new rule> Click the plus icon at the top of the page to make a new Service> Specify the port in question> set the rule to allow to deny traffic. Unfortunately you would need a rule per port, and we have a max of 64 firewall rules per user profile.
