Rogue Security Wiki

Practical procedure and troubleshooting notes for Create a New Subnet.

  1. Log in to pfSense.
  2. Click on Interfaces.
    Interfaces menu
  3. Select Assignments.
    Interface Assignments
  4. Click Add under the Available Network Ports section.
    Add new interface
  5. Click Save.
    Save new interface assignment
  6. Return to Interfaces.
    Interfaces list
  7. Click on the new interface you just created.
    Select new interface
  8. Fill out the General Configuration for that interface (e.g., name, IPv4 type, subnet).
    General configuration
  9. Click Save.
    Save interface configuration
  1. Click on Firewall.
    Firewall menu
  2. Select Rules.
    Firewall Rules
  3. Click on the interface you just configured (for example, DMZ).
    Select interface rules
  4. Click Add to create a new rule.
    Add firewall rule
  5. In the Edit Firewall Rule window, leave most settings as default — this rule will allow traffic on the new interface.
    Edit firewall rule
  6. Click Save.
    Save firewall rule
  1. Click on Services.
    Services menu
  2. Select DHCP Server.
    DHCP Server menu
  3. Choose the interface you just created.
    Select DHCP interface
  4. 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
      DHCP configuration
  5. Scroll down and click Save.
    Save DHCP configuration