connecting an Apple TV to a public WiFi

another thing is many public wifi networks only allow internet access on port 80 (the browser port)

while some appletv features may require the usage of the other ports https://administrivia.com/resources/apple-tv-tcp-and-udp-ports-and-protocols-used/

No, as I said those authorizations are done via webpage and can’t be done on Apple TV. As stated by the other poster the network may also have limitations in regards to connections, or certain features may be disabled. At any rate you will need to speak to the network administrator

Domirma wrote:

Thank you fot that information but it don't help me to connect my Apple TV by WiFi on the network ...

If the WiFi network requires that you log in through a web page, you can't connect your Apple TV to it.

Yes it does. Again, that authorization is done via webpage when done on the other device. As I said you will need to speak to a network administrator as that is the only possible way to gain access, if at all possible, and certain functions may be disabled.

You can’t. The Apple TV has no browser and thus can’t connect the way your iPad did. That is why you will need to talk to a network administrator to see about gaining access, and if the network blocks access to certain ports then the Apple TV may not even be able to function properly

Public networks require authentication via webpage and that is not possible on an Apple TV. You would need a network administrator to help access the network.

If it requires the installation of a profile, you can't connect your Apple TV to the network.