Somewhat related, does anyone use Moxie's knocknock [0] or a similar procedure to secure ports? Since I learned about it I thought it was a very interesting id

Somewhat related, does anyone use Moxie's knocknock [0] or a similar procedure to secure ports? Since I learned about it I thought it was a very interesting idea. Even tried it out a couple of times but not sure if anyone else is using it. It doesn't seem maintained and I'm not aware of more recent implementations of this. Does anyone else use it for their setups? is it worth/not worth it? [0]https://moxie.org/software/knockknock/ https://moxie.org/software/knockknock/