Comment by Sohcahtoa82

> Protocol multiplexing exists. But you will have to agree on a single protocol

I may be misunderstanding your message here, but the requirement to agree on a single protocol isn't true when you're using multiplexing. I think you're confusing tunneling with multiplexing.

With multiplexing, you have multiple protocols listening on a single port. The multiplexer server sniffs the first few bytes of what the client sends to determine what protocol is being used, then decides which back-end to forward the connection to.

Neither the client nor the final back-end need to be aware that multiplexing is happening, and likely aren't.

Through this, you can use both HTTPS and Telnet on port 443 without the Telnet client needing to have any changes done.