VirtualBox offers flexible networking options that allow virtual machines to connect in different ways. This guide explains how to configure Host-Only, NAT, and Cloud Networks using the Network Manager.
Accessing the Network Manager
- Open VirtualBox.
- Navigate to File → Tools → Network Manager.
- In the Network Manager window, you can manage Host-Only Networks, NAT Networks, and Cloud Networks.
Host-Only Network
Purpose: Creates a private network between the host and virtual machines (VMs). VMs can communicate with each other and the host but not with external networks.
Use Case: Ideal for testing environments where external network access is unnecessary.
Setup Steps
- In the Network Manager, go to the Host-Only Networks tab.
- Click Create to add a new host-only network.
- Configure settings such as IP range and DHCP server if needed.
- Assign this network to your VM by opening Settings → Network and selecting Host-Only Adapter in the Attached to dropdown.
NAT (Network Address Translation) Network
Purpose: Allows VMs to access external networks (like the internet) using the host’s IP address. VMs in the same NAT network can also communicate with each other.
Use Case: Suitable for isolated environments where VMs need internet access but should not be directly exposed to the host’s network.
Setup Steps
- In the Network Manager, go to the NAT Networks tab.
- Click Create to add a new NAT network.
- Configure settings such as IP range and port forwarding if required.
- Assign this network to your VM by opening Settings → Network and selecting NAT Network in the Attached to dropdown.
Cloud Network
Purpose: Connects VMs to cloud services such as Oracle Cloud Infrastructure (OCI), enabling seamless integration between local VMs and cloud environments.
Use Case: Ideal for hybrid setups where VMs need to interact with cloud resources.
Setup Steps
- Ensure the VirtualBox Extension Pack is installed to enable cloud features.
- In the Network Manager, go to the Cloud Networks tab.
- Click Create to add a new cloud network.
- Configure the cloud provider and network details (e.g., OCI credentials, network ID).
- Assign this network to your VM by opening Settings → Network and selecting Cloud Network in the Attached to dropdown.
By mastering these VirtualBox network configurations, you can build secure, flexible, and scalable environments for testing, development, or hybrid cloud integration. Adjusting these settings ensures your virtual machines operate exactly as your project requires.