Configuring interfaces

1. To edit the Internet-facing interface (in the example, wan1), go to Network > Interfaces.

2. Set the Estimated Bandwidth for the interface based on your Internet connection.

3. Set Role to WAN.

   

4. To determine which Addressing mode to use, check if your ISP provides an IP address for you to use or if the ISP equipment uses DHCP to assign IP addresses.
   1. If your ISP provides an IP address, set Addressing mode to Manual and set the IP/Network Mask to that IP address.
   2. If your ISP equipment uses DHCP, set Addressing mode to DHCP to allow the equipment to assign an IP address to WAN1.

5. Edit the lan interface, which is called internal on some FortiGate models.

   If your FortiGate doesn't have a default LAN interface, for this step, you can use either an individual interface or create a software switch to combine the separate interfaces into a single virtual interface.

6. Set Role to LAN.

7. Set Addressing mode to Manual and set the IP/Network Mask to the private IP address that you want to use for the FortiGate.

8. If you need to assign IP addresses to devices on your internal network, enable DHCP Server.