AirPort - Port Mapping Basics using AirPort Utility v6.x

Last Modified: Apr 21, 2012 12:23 PM


The following are the basics for setting up the 802.11n AirPorts for port mapping/forwarding:


Port Mapping Setup

(Note: These instructions are designed to work with AirPort Utility v6.x.)

To setup port mapping on an 802.11n AirPort Express Base Station (AXn), connect to the base station's wireless network. For either the 802.11n AirPort Extreme Base Station (AEBSn) or Time Capsule (TC) you can connect to either the base station's wireless network or temporarily connect directly, using an Ethernet cable, to one of the base station's LAN (opposing arrows) ports, and then use the AirPort Utility, in Manual Setup, to make these settings:


1. Reserve a DHCP-provided IP address for the host device.

(Note this is the device that you want to access from a remote location.)

AirPort Utility > Select the base station > Edit > Network tab

  • Verify that the Router Mode = DHCP and NAT
  • Click the "+" (Add) button under DHCP Reservations.
  • Description: <enter the desired description of the host device>
  • Reserve address by: MAC Address
  • MAC Address: <enter the MAC (what Apple calls Ethernet ID if you are using wired or AirPort ID if wireless) hardware address of the host computer>
  • IP Address: <enter the desired Private (LAN-side) IP address that you want to reserve from the DHCP pool of addresses>
  • Click "Save"


2. Setup Port Mapping on the base station.

AirPort Utility > Select the base station > Edit > Network tab

  • Click the "+" (Add) button under Port Mapping.
  • Description: <enter the desired description for what you are mapping>
  • Public UDP Port(s): <enter the appropriate UDP port value(s)>
  • Public TCP Port(s): <enter the appropriate TCP port value(s)>
  • Private IP Address: <enter the reserved IP address of the host device (from step 1)>
  • Private UDP Port(s): <enter the same Public UDP Ports or your choice>
  • Private TCP Port(s): <enter the same Public TCP Ports or your choice>
  • Click "Save"


(ref: "Well Known" TCP and UDP ports used by Apple software products)