Cannot connect to GitHub via SSH (But can connect to GitLab)

Question

I've scoured the internet and found many people with similar problems, but my variant seems to be unique. The issue is I cannot connect to GitHub via ssh in order to push/pull (I'm on Windows 10).

If I run ssh -T [email protected]:

ssh: connect to host github.com port 22: Network is unreachable

If I run ssh -T -p 443 [email protected]:

Hi cjriches! You've successfully authenticated, but GitHub does not provide shell access.

Bizarrely, if I run ssh -T [email protected]:

Welcome to GitLab, @cjriches!

This, combined with the fact that I tried disabling Windows Firewall to no avail, seems to prove that it's not just port 22 that's the problem. For what it's worth, I can also SSH into other, completely non-git-related hosts. For some reason, it's GitHub specifically that refuses to connect. I've re-uploaded the public key just in case, so the problem definitely isn't there.

Has anybody got any ideas how on earth this could be happening?

Answer 1

Seems like it is either a DNS issue or a Proxy issue. I would try changing my dns to 8.8.8.8 and 8.8.4.4. See if that clears up the issue. If that still doesn't rectify the issue, I would look and see if I am using a proxy which is preventing me from contacting github.