Force NAT – Normally network address translation (NAT) is part of the Routing Mode setting, which is selected on the LAN side in Networking > Local Networks > Local IP Networks. Select this option to force NAT whenever this WAN device is being used.
Download bandwidth – Defines the default download bandwidth for use in Load Balance and quality of service (QoS) algorithms. (Range: 128 Kb/s to 1 Gb/s.)
Upload bandwidth – Defines the default upload bandwidth for use in Load Balance and QoS algorithms. (Range: 128 Kb/s to 1 Gb/s.)
Allow QoS – Allow QoS policies to apply to the device.
Maximum transmission unit (MTU) – This is the size of the largest protocol data unit that the device can pass. (Range: 46 to 9,000 Bytes.)
Hostname – This only shows for certain devices.
AutoVPN Network – Select to associate this interface with a specific AutoVPN Network. You must provide a Network Name and Network UUID when using AutoVPN.