无法克隆github存储库

Question

I have generated ssh keys from my terminal and placed an entry in my SSH keys section in github.com.

After that, I am just trying to clone my repository, but I get the following error message :

git clone git@github.com:XYZXY/XXXXXXXXXX.git

Initialized empty Git repository in /home/XYZXY/.ssh/XXXXXXXXXXXXX/.git/
ssh: connect to host ssh.github.com port 22: Connection refused
fatal: The remote end hung up unexpectedly

I tried this one too :

ssh -T git@github.com
ssh: connect to host ssh.github.com port 22: Connection refused

My question is :

1) Is source side blocking the connection ?
2) Is Target not allowing the connection ?

Answer 1

Try running this command for more information.

telnet ssh.github.com 22

You should see something like this.

~ $ telnet ssh.github.com 22
Trying 192.30.253.122...
Connected to ssh.github.com.
Escape character is '^]'.
SSH-2.0-libssh-0.7.0

If you do not, then something (possibly a firewall block?) is preventing you from accessing github.