Connecting via SSH

Step 1 : Ensure ssh is enabled on the Ubuntu host (system being connected to) by running the following commands in the terminal on the Ubuntu host:

• 'sudo apt install openssh-server' to install openssh server
• 'sudo systemctl enable ssh' to enable ssh
• 'sudo ufw allow ssh' to allow ssh traffic through firewall
• 'sudo systemctl status ssh' to check ssh status

Step 2: Connect to the Ubuntu host by running the following command in the terminal on the client (system being connected from):

• ssh username@ip_address or hostname | For example: ssh ojieok@10.229.2.34
• To find the ip address you can enter 'ifconfig' or 'ip a' in terminal

Connecting via the Remote Desktop Application

Step 1: To install xrdp and allow remote connections to the Ubuntu host (system being connected to), run the following commands in terminal (Ctrl+Alt+T) :

• sudo apt install xrdp -y to install xrdp
• sudo systemctl start xrdp to start xrdp
• sudo systemctl enable xrdp to enable xrdp
• sudo systemctl status xrdp to check the status of xrdp, if it is active
• sudo ufw allow from any to any port 3389 proto tcp

Step 2: Ensure that Remote Desktop is not enabled in settings. If it is enabled, this might not work

• Accessing Ubuntu from Windows:
  • Open the Remote Desktop Connection app and enter the domain name or IP address of the Ubuntu host
  • To find the IP address enter  ifconfig or ip a in terminal
  • In the next tab, click Yes 
  • Provide the username and password to sign in to the Ubuntu host

• Accessing Ubuntu from macOS:
  • Launch the Windows App for Mac (previously Microsoft Remote Desktop): https://apps.apple.com/us/app/windows-app/id1295203466?mt=12
  •  Add the Ubuntu system via its host name or IP address
  • Select the connection and enter the Ubuntu systems credentials when prompted

Disabling SSH

• To disable SSH on the Ubuntu system, run the following commands in terminal:
  
  sudo systemctl disable --now ssh