I’ve discussed the use of SSH in several posts in the past, but while recently building a new environment, I realized that I’ve never indicated how the service itself should be installed.
sudo apt-get install openssh-server
If you desire to change any of the default configuration such as port or cyphers…
sudo vi /etc/ssh/ssh_config
NOTE: If you intend to access the server from the Internet, you will have to verify that port forwarding is enabled on your routers and firewalls.