The OPNsense software walks you through setting up a WAN and LAN interface when you first install it. Although you can use a single interface for the WAN/LAN connection (which reminds me of the dial-up Internet connection sharing days…), it is recommended to have at least two network ports/adapters on the device you have OPNsense installed. One interface needs to be used for the WAN which provides the Internet connection from your modem/router and at least one other interface needs to be used for your LAN for your internal network devices. It is economical since you do not need to purchase extra hardware and convenient since your network devices can be physically located anywhere yet still be grouped in logically separate networks.īefore we can configure VLANs in OPNsense, you will need to configure all of the interfaces on your router that you plan to use. VLANs are both economical and convenient. The biggest difference is that you do not need to put network devices on physically separate switches or other network hardware. Think of them as logically separate networks that are similar in concept to physically separated networks. For the uninitiated, VLANs are Virtual Local Area Networks.
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