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

Question

I am under a proxy and I am pushing in to git successfully for quite a while.
Now I am not able to push into git all of a sudden.
I have set the RSA key and the prox

Answer 1

I faced the same problem and couldn't find a working solution. I faced this problem while setting up a local server and the git couldn't connect through my proxy network but my workstation could. This was the output when I ran the command ssh -vT git@github.com

ubuntu@server:~$ ssh -vT git@github.com
OpenSSH_7.2p2 Ubuntu-4ubuntu2.8, OpenSSL 1.0.2g  1 Mar 2016
debug1: Reading configuration data /home/ubuntu/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: Applying options for *
debug1: Connecting to github.com [13.234.176.102] port 22.

So I tried using an SSH connection made over the HTTPS port by editing the config file ~/.ssh/config but to no avail.

Host github.com
 Hostname ssh.github.com
 Port 443

Finally, I found this article which solved and exposed the real problem.

# github.com
Host github.com
    Hostname ssh.github.com
    ProxyCommand nc -X connect -x : %h %p
    Port 443
    ServerAliveInterval 20
    User git

This is my config file and now git works perfectly well through ssh!