Using the following helped me join: ssh devzat.hackclub.com -p 443

... to get around my firewall!

This is your week to learn about .ssh/config files.

this is mostly a certain crypto lib's fault (maybe stdlib, let me check)

Ugh. That’s not specific to one language either. Changing CA certs or enabling OCSP is often a case of configuring the same thing in several places or multiple libraries. Identity certs doubly so. If memory serves I spent more time on that than the rest combined.

it's a known gossh issue I believe

That's the one

I think you are correct. Was able to get in by first doing `ssh-keygen -t ed25519` to create new private/public keys (be careful not to overwrite ssh keys that you are already using for other things!). RSA support is being phased out in various places.

Just confirming that I had to do this first and it started working. It was originally giving me the Permission Denied (publickey) error.