But how about in proxy? Let's say we have two clients,
In Network Address Translation, port number is used to determine which client is the recipient of a response from a server.
clientB, connected to a proxy server, and let's say they access
youtube.comat the same time. Now when the proxy server receives the response from
youtube.com, how does it know if that response if for
clientB? Is port number also used here in a way like in NAT?