OpnSense on Hyper-V | How to add VLANs as Interfaces

I recently switched over to OPNsense from my Ubiquiti Unifi Dream Machine. This is how I presented all my VLANs as interfaces.

OpnSense on Hyper-V

To add VLANs as interfaces to OPNsense running on Hyper-V, you can follow these steps:

  1. Configure VLANs on Hyper-V Virtual Switch:
    • Open Hyper-V Manager.
    • Navigate to the virtual switch settings.
    • Create VLANs corresponding to the VLANs you want to use on OPNsense.
    • Assign VLAN IDs to each virtual switch.
  2. Configure Virtual Machine Network Settings:
    • Select the OPNsense virtual machine in Hyper-V Manager.
    • Go to its settings.
    • Add network adapters corresponding to the VLANs you created in the previous step.
    • Assign each adapter to the respective virtual switch with the appropriate VLAN ID.
  3. Configure OPNsense Interfaces:
    • Log in to OPNsense web interface.
    • Navigate to Interfaces > Assignments.
    • You should see the additional network adapters corresponding to the VLANs.
    • Assign each adapter to an interface (e.g., LAN, WAN, OPT1, OPT2, etc.).
    • Configure IP addresses and other settings for each interface as needed.
  4. Configure Firewall Rules and NAT:
    • Once the interfaces are assigned, configure firewall rules to allow or block traffic as per your network requirements.
    • If you’re using NAT, configure NAT rules accordingly.
  5. Verify Configuration:
    • Test connectivity from devices connected to each VLAN to ensure that traffic is passing through OPNsense correctly.
    • Check firewall logs and monitor traffic to ensure that rules are being applied correctly.

By following these steps, you can add VLANs as interfaces to OPNsense running on Hyper-V and effectively manage your network traffic within your virtual environment. Remember to review and adjust configurations as necessary based on your specific network setup and requirements.

Permanent link to this article: https://achubbard.com/2022/10/13/add-vlans-as-interfaces-to-opnsense-on-hyper-v/

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