A client called me asking me to setup and configure SSH on a new Ubuntu server they got for a project. They needed the server to be accessed by a remote Web Developer they hired.
After having a great cup of coffee Villa Sarchi varietal I decided to take on this one.
Install SSH Server in Ubuntu
New Ubuntu installs do not have SSH service by default. You need to install it. It very easy. Run the below command on your Terminal:
sudo apt update
sudo apt install openssh-server
Select ‘yes’ when asked. This last command will install SSH server in Ubuntu. Once the installation is done the SSH service will be started. You can check this by running this command:
sudo systemctl status ssh
Make the SSH server more secure using UFW in Ubuntu
UFW (Uncomplicated FireWall) is Ubuntu’s default firewall. Allow SSH port 22, port 8000, port 5000(these two are for testing only) on your Ubuntu server:
sudo ufw allow ssh sudo ufw allow 8000 sudo ufw allow 5000
Then enable the firewall:
sudo ufw enable
To see what’s configured under your ufw rules:
sudo ufw status
This will give you a summary as the one below:
Next, I needed to create a Linux user with sudo rights. You can tap on that link to see the steps necessary to do that. After you’re done you should be able to connect to the server using the following ssh command:
You can also add your public key to the Ubuntu server. This way you don’t need to enter a password when you SSH. You can also add this server to a config file in your .ssh/config
I will be adding more details about security for SSH server. For now, visit my ITPro shop to see cool IT inspired T-Shirts and coffee mugs I designed.