Yes, but it's not in the sshd config, it's in the ssh config. See ssh_config(5), search for Remote to find the most relevant sections.
Yes, but it's not in the sshd config, it's in the ssh config. See ssh_config(5), search for Remote to find the most relevant sections.
I don't follow. If it's in ssh_config, then it's client-side. Either that's the client initiating the request, in which case it's not server-controlled like HTTP virtual hosts, or else it's the "client" involved in the hop through the jump server, in which case it's going to be specific to a single username. Also the Remote* options have to do with remote port forwarding, which is in the wrong direction.
What am I missing?