Question: I am working on Ubuntu 11.10
Local branch of my git-repo is up to date

I then wrote following command in terminal: heroku create --stack cedar and it said:  

Notice: on Wed, 20 June, our default stack will change to Cedar. <http://bit.ly/Lh0rM5>

Creating radiant-wind-7413... done, stack is cedar  

<http://radiant-wind-7413.herokuapp.com/> | git@heroku.com:radiant-wind-7413.git  

Git remote heroku added

All fine till now, then I typed following in terminal:

```
git push heroku master

```

and the following error occured:
**ssh: connect to host heroku.com port 22: Connection timed out  

fatal: The remote end hung up unexpectedly**

Answer: 
Today Heroku uses git over ssh. The default port for ssh is 22 and it looks like your network doesn't allow outbound connections to port 22. Perhaps this is something your network administrator can change.
I added the https url to the .git/config file in my project folder. I found the HTTPS URL in the project Settings on Heroku. I then added that URL to replace the SSH url inside the .git/config text file.