First things first. You need ssh installed. Not just the client, the server too. Find out:
$ which ssh
$ which sshd
which can't find them, you need to install:
sudo apt-get install ssh sshd.
The install process should set up everything, but just in case, make sure the ssh port (22), is open (if ufw is disabled, consider enabling it):
sudo ufw allow 22/tcp
what is your address
ip addr | grep inet to get your ip address. If it starts with
10., you have a local (aka private) ip address. Otherwise it is public (eg 126.96.36.199). If it is public, you have it easy. Anyone can try and connect with a command like
If you are stuck with a local IP address, you need to configure your router to forward port 22 to your computer. Then you can go to a site like http://whatismyip.org/ to get your public ip address, and anyone who has it can try and connect with a command like
get a permanent address
Sign up with http://dyndns.com/ for their free Host Services to link a dyndns name to your ip address. I'm assuming here that you have not bought a static ip address from your ISP.