Step 1: Install OpenSSH Server Software Package
sudo yum –y install openssh-server openssh-clients
Step 2: Starting SSH Service
sudo systemctl start openssh-server
Step 3: Check sshd status
sudo systemctl status sshd
To stop the service
sudo systemctl stop sshd
To enable OpenSSH service
sudo systemctl enable sshd
For Ubuntu
First, update the system package
sudo apt-get update
Then, install the openssh server
sudo apt-get install openssh-server
To enable the service $\neq$ To start the service. By enablleing the service, this service will automatically start after each system reboot