What is the limit of established connections?

Question

Computer networks

Good afternoon! The question is: How many times can a TCP connect to a Windows Server 2019 machine at the same time, given that one port is used (connections will not be half-open)

Answer 1

Ideally, for the client - until the maximum number of ports allowed on the server runs out (something around 16k), for the server - until the system resources run out. 100-500k maybe.

Answer 2

established is not a "closed" connection at all. This is an established connection over which data is transmitted.