This recipe describes how to identify interfaces on a network configuration and how to assign them in pfSense.
You need to identify the MAC addresses for each Ethernet port on your pfSense system before attempting to assign them.
- Navigate to
Interfaces | Interface Assignments
. - Assign a WAN interface, first by selecting the correct MAC address from the drop-down list for the WAN interface:

- Repeat this process for the LAN interface, selecting the correct MAC address from the drop-down list for the LAN interface. If necessary, add the LAN interface to the list by following this process:
- Click on the
Add
button in theAvailable network ports
column. - Click on the name of the newly created interface in the Interfaces column (it should be
OPT1
). - When the configuration page for the interface loads, change
Description
toLAN
. - Click on the
Save
button at the bottom of the page. - Navigate back to
Interfaces
|Interface Assignments
.
- Click on the
- If you want to add optional interfaces, you can do so by repeating step 3 and substituting the name of the optional interface (for example,
DMZ
) for LAN. - When you are done assigning interfaces, click on the Save button.