¶ Creating a New Subnet on pfSense
- Log in to pfSense.
- Click on Interfaces.
- Select Assignments.
- Click Add under the Available Network Ports section.
- Click Save.
- Return to Interfaces.
- Click on the new interface you just created.
- Fill out the General Configuration for that interface (e.g., name, IPv4 type, subnet).
- Click Save.
- Click on Firewall.
- Select Rules.
- Click on the interface you just configured (for example, DMZ).
- Click Add to create a new rule.
- In the Edit Firewall Rule window, leave most settings as default — this rule will allow traffic on the new interface.
- Click Save.
- Click on Services.
- Select DHCP Server.
- Choose the interface you just created.
- Configure the DHCP scope information for this interface, including:
- Range: The start and end IP addresses for DHCP leases
- DNS Servers: (optional) Custom DNS servers for clients
- Gateway: Default gateway for devices on this subnet
- Scroll down and click Save.
