github ssh problem

ssh: connect to host github.com port 22: Connection timed out

Authentication

$ ssh -vT -p 443 git@ssh.github.com Hi xxx! You've successfully authenticated, but GitHub does not provide shell access.

Override SSH settings

$ sudo vim ~/.ssh/config

Add section below to it

Host github.com

Hostname ssh.github.com

Port 443

Verify

$ ssh -T git@github.com Hi xxx! You've successfully authenticated, but GitHub does not provide shell access.