Connecting remotely to an airdisk mounted on a bridged AEBS(newest) through Verizon Fios?

Question

Has anyone encountered a "dumbed down" step-by-step set of directions to be able to remotely access my airdisk that is attached to a bridged Airport Extreme (newest) through Verizon Fios?  I have seen directions all over the place, but they are VERY technical.  I can follow them generally, but often they contain a few steps that assume you know what they are talking about - and I don't.  I also keep seeing COMPLETELY different sets of directions.  At this point I am worried about messing things up by looking at so many different sets of directions.  I know that Fios' Actiontec wireless router hooked to a coax makes things far more complicated.  Can anyone provide (or link me to) step-by-step directions that explain where I am going at each step?  One of the things that confuses me the most is a reference to the Dyndns static IP address.  I understand what it is generally, and created an account.  But I am not really sure what I'm supposed to do on there that specifically helps me in my situation.
I know this has been discussed many times in the forums, but I have looked at everything I can find and am inevitably lost eventually.
Thanks!

Answer 1

There are at least three methods to access a shared AirPort Disk over the Internet from a Mac:
Prerequisite:
Install the AirPort Disk and verify that you can access it from the local network.
Method #1: Using Back to My Mac (BtMM)
Prerequisites:
iCloud Account
AEBSn or TC running 7.6.1+ firmware
AirPort Utility 6.0+
Mac running OS X 10.7.2+
A router with a publicly reachable IP address and supports either UPnP or NAT-PMP.
Setup:
Apple Support Article HT3486 - iCloud: Setting up and using Back to My Mac with an 802.11n-based AirPort  base station, or Time Capsule
Additional References:
Apple: Back to My Mac User's Guide
Take Control Books: Take Control of Back to My Mac
Method #2: Using a Global Domain Name
Prerequisites:
A DDNS Account
Dynamic Global Host Name
Setup:
Acquire a DDNS account and dynamic global host name. One DDNS-provider is DynDNS and will be assumed for the following steps.
AirPort Utility (v5.x) > Select the base station > Manual Setup >AirPort > Base Station tab > Edit ...
Use dynamic global hostname (checked)
Hostname: dyndns.com
User: <enter your DynDNS user account name>
Password: <enter your DynDNS user account password>
Click "Done."
AirPort Utility > Select the base station > Manual Setup > Disks > File Sharing tab > Share disks over the Internet with Bonjour (checked)
To access the AirPort Disk:
OS X: Finder > Go > Connect to Server > Server Address: <your DynDNS Global Host Name>
Method #3: Using Port Mapping
Prerequisites:
If the 802.11n AirPort Extreme Base Station (AEBSn) or Time Capsule (TC) is connected directly to the broadband Internet modem, verify that the modem is in bridge mode, i.e., if the modem provides NAT & DHCP services, disable them.
If the AEBSn or TC is downstream of another router or gateway device, configure that device for port mapping/forwarding to the AEBSn or TC. (Note: AFP requires that TCP port 548 be mapped.) Also, configure the AEBSn or TC to have a static Private IP address so that it will always be found at the same address.
Use CheckIP (or equivalent) to determine your router's current Public (WAN-side) IP address.
Setup:
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.
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 Public (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.