The tab displays http sessions of users (users, that are currently viewing channels from your server)
Server - the server from which the stream is viewed
Stream - name of the stream to which the client is subscribed
IP - user ip-address
Login - client login (when logging in with login/password/token)
Uptime - the amount of time in minutes from the start of the session.
cross icon - force end session
This tab displays only the http session, so as information about udp it is impossible to trace because of the technology of work of the protocol: the server broadcasts the stream is not checking for the existence customers, and at what flows they signed. (Like a radio transmitter transmitting a radio broadcast)