I’m attempting to put our IOT Amazon Thermostats on a VLAN with a restricted ACL. It allows access to Internet, DNS, and DHCP. Deny access to all other Vlans and devices. The ACL I have works on test PC’s place on the Vlan. But when connecting the thermostats to WiFi on the Vlan thermostat receives DHCP lease, gets out to the internet, but when finalizing communication with the Amazon App it cannot connect.
Does anyone know what ports or communication profiles / ports need to be added to the ACL for this to work?
Thanks,