Infrastructure 1 NIC

For infrustructure, we will need:

  • Oracle VM VirtualBox installed
  • Any version of a Linux server (I will use AlmaLinux 9.5)
  • A terminal capable of establishing an SSH connection (for example, PowerShell)

Set up the machine for the server 1-4:

  1. Click on the machine in VirtualBox.
  2. Go to Settings > Network.
  3. Under Adapter 1, set “Attached to” → Bridged Adapter.

Observing IPs and Establishing SSH Connections

  1. Run your machines. New windows will open.
  2. Log in to your machines.
  3. Start with the server 1.
  4. Type:
				
					ip a

You will see two IP addresses:

  • The first adapter is the loopback interface.
  • Second interface enp0s3 with IP 192.168.56.105 is used for internet traffic.

Repeat for each virtual machine/server 2-4.

💡 Hint: Use Right Ctrl to switch between virtual terminals in VirtualBox.

Establish SSH Connections (from your host)

To copy and paste more easily in terminal, open your terminal (PowerShell, cmd, embedded Mac terminal, or MobaXterm) and connect with:

				
					ssh username@ip_address

Repeat for each virtual machine/server 2-4.