How to setup and use SSH Server on Linux

Server side : Install OpenSSH

Debian / Ubuntu: sudo apt-get install openssh-server

RHEL / CentOS / Fedora: sudo dnf install openssh-server

Server side : Enable/Start the SSH service

SysVinit: sudo /etc/init.d/sshd start

SystemD:

sudo systemctl enable sshd
sudo systemctl start sshd

If unsure of what which system manager your distro uses, try this:

pidof systemd && echo "systemd" || echo "sysvinit"

Client side : Install OpenSSH or other SSH client

OpenSSH client is commonly found already installed in most distros, but here are the steps in case it isn't. You can also use Putty as it is very popular and user-friendly.

Debian / Ubuntu: sudo apt-get install openssh-client

RHEL / CentOS / Fedora: sudo dnf install openssh-client

Test it

Try to login into the server using ssh user@server-name

Conclusion

In this tutorial, you learned how to install the OpenSSH server application and how to connect to that using a SSH client.