Having fun and games with my router firmware which the hardware maker is fixing.
Whilst I wait, I want to add a second port into ssh config.
Under Linux I just add it into sshd_config, however this isn’t working in macOS.
I’ve changed sshd_config and also added the second port in etc/services.
Restarted ssh but it doesn’t listen on the second port.
Google doesn’t throw any recent results up.
Anyone got an idea what I’m missing? TIA 
Is your Mac the server or the client?
it’s the server, so on the mac updated sshd_config and services.
but the mac doesn’t allow connection on the second port
Having read around it more, this seems nigh on impossible without disabling SIP.
Madness.
The joy of using a Mac! 
Just curious… why a second port? Can’t you just port forward the second port to 22?
Because my router is having issues with port translation
I guess my next question would be why do you need two ports for sshd? It’s easy enough to change the default port, even if having two separate ports isn’t easy.
I just wanted to add an extra port whilst the router couldn’t map it as I use 22 for other stuff internally.
I’ve since received a beta firmware that seems to have resolved the issue (well so far at least).
Thanks for your help and interest
Gotcha. That makes sense. Sorry that we weren’t able to figure out a way, glad the beta firmware helped.