Can I connect remotely to my AirPort Extreme via the Internet?

Question

I would like to connect to the AirPort Extreme at my home when I'm on the road via the Internet and access the USB drive attached to the Extreme. The Extreme is connected to my existing DSL modem, so I can't / don't want to use the PPP dial-up mode.
Any guidance from the community would be appreciated!

Answer 1

The following are the basic steps to configure access to an AirPort Disk from the Internet. Note: These instructions assume that the AirPort is the only router in your network configuration. That is, it is directly connected to the Internet modem and there are no routers upstream of it.
Start the AirPort Utility > Select the 802.11n AirPort Extreme Base Station (AEBSn,) and then, note the IP address shown.
Select Manual Setup.
Verify that Connection Sharing = Share a public IP address is selected on the Internet > Internet Connection tab.
Select Disks, and then, select File Sharing.
Verify that both the "Enable file sharing" and "Share disks over WAN" options are enabled.
Verify that Secure Shared Disks = With a disk password. (Recommended)
Verify that AirPort Disks Guest Access = Not allowed. (Recommended)
Select Advanced, and then, select the Port Mapping tab.
Click the plus sign to add a new port mapping.
For Service, select the "Personal File Sharing" option. (Note: This option would only allow Mac clients to access the AirPort Disks. If you want both Macs and PCs to connect, you would need to leave this field at its default value and enter the appropriate SMB ports to the mix of ports to be opened.)
In the Public UDP Port(s) and Public TCP Port(s) boxes, type in a 4-digit port number (e.g., 8888) that you choose. In the Private IP Address box, type the internal IP address of your AEBSn that you wrote down in step 1. In the Private UDP Port(s) and Private TCP Port(s) boxes, type 548. Click Continue.
In the Description box, type a descriptive name like "AirPort Disk File Sharing," and then, click Done.
Click on Update.
To connect to the shared AirPort Disk from a remote location using a Mac:
From the Finder > Go > Connect to Server.
Enter the DynDNS-provided Domain Name or Pubic (WAN-side) IP address of the AEBSn, followed by a colon and the Public port number that you choose in step 11 of the previous procedure. For example: afp://www.mydyndnsdomain.com:8888 or afp://123.456.789.123:8888
Click Connect.
You should be prompted for your user name and password. The user name can be anything you like; the password should be the Disk password for the AEBSn that you created in step 6 previously.
Click Connect.