I remember doing some relatively complex stuff with SSH config 15 or 20 years ago with IP filtering, different users having different chroots, IP forwarding rules based users connecting and rules around what SSH clients / protocols were allowed. Part of that was also defining custom ports too. All of which were just defined in sshd_config.

None of this was new stuff back then. It just wasn’t well blogged (in fact it was so poorly written about that my very first blog post was on exactly this topic. Blog is long gone now though). However if anyone took the time to read the man pages, you’d see all the functionality is already backed into openssh

Multiple ports have been supported for more than 20 years.

possible, but I see recommendations along these lines going back to 2011

https://serverfault.com/questions/284566/configuration-for-m...

I feel like the blink tag part of the story dates it to before 2011. (I just tested to see if blink tags still worked. It did not.)

Unless it’s anonymized, Hurricane Jeanne dates it to 2004

That fits the "almost 20 years ago" line in the blog post.

That's hilarious. I missed that line and the name of the hurricane line. But blink tags, those stick with me.