github - GIT SSH is not Working -

I had the first problem and resolved with an answer given by our Stackhouseflow community member.

Now I tried to use SSH for cloning a protected repository in Windows 7, first I created a public key using this URL.

After following all the steps, working for me for everyone referred to in the URL, except when I try to do the fourth step of "$ ssh -T git@github.com" , Then I got the following error

  Mohammed_ Hussein @ 18 ~ / .ssh $ ssh -T -p 443 git@ssh.github.com ssh: ssh.github.com: Anyone related to the name Do not know    
 
 
 You need to use for step 4: < / P> 
  ssh -T git@github.com   
 (No  ssh -T git@ssh.github.com :  Ssh.github.com  If the error message persists:  
 
    
 This should not be a single one. Because you are not using one.  
 
 Keeping in mind that trying to ssh on a private server (and not github.com), OP:   
 here is the problem It is that my network is blocking the firewall IP and port number 22.