Remote Access to TC Disk from Windows/PC. Do I need DynDNS. Using FTP

Question

I need to be able to have anyone on the Internet be able to access my files on Time Capsule. I am using my Time Capsule as a router and do not have a static IP. My Internet Provider is comcast and modem is a Motorola Surfboard.
Here are my basic questions:
How can my Time Capsule be accessed remotely via PC/Windows? What protocol? How?
Can Time Capsule be set up do FTP? What port mapping do I set up for the personal and private UDP and TCP?
Since I do not have a static IP address, do I need to subscribe to a Custom DynDNS account?
Thank You

Answer 1

How can my Time Capsule be accessed remotely via PC/Windows? What protocol? How?
Windows or Linux PCs can access the Time Capsule's (TC) file service via the SMB protocol.
The following is the basic steps to configure the TC's hard drive to be accessed from the Internet.
Configuring the TC
AirPort Utility > Select the TC
o Note the value of the IP Address. This is the Public or WAN-side IP address of the TC. (Note: You will need to have either a static Public IP address, or use a free dynamic DNS service, like you suggested, in order to access the TC from the Internet.)
Manual Setup > Internet > Internet Connection
o Connection Sharing = Share a public IP address
Manual Setup > Disks > Files Sharing tab
o Enable file sharing (checked)
o Secure Shared Disks = With base station password
o AirPort Disks Guest Access = Not allowed
o Share disks over Ethernet WAN port (checked)
Manual Setup > AirPort > Base Station
o Enter a Base Station Password and verify it in the Verify Password box.
Manual Setup > Advanced > Port Mapping
o Click the plus sign "+" to add a new port mapping.
o In the Public UDP Port(s) and Public TCP Port(s) boxes, type in a 4-digit port number (e.g., 5688) that you choose.
o In the Private IP Address box, type the internal IP address of your TC that you noted earlier.
o In the Private UDP Port(s) and Private TCP Port(s) boxes, type 548, and then, click Continue.
o In the Description box, type a descriptive name like "Time Capsule File Sharing," and then, click Done.
o When you have made all the changes, click Update.
Connect the PC to the TC from a remote location
o Type in your DynDNS domain name, plus a colon and the port number you specified when configuring the TC earlier. For example,"www.myTC.com:5688"
o You will be prompted for your user name and password. The user name can be anything you like; the password would be the TC's Base Station password you defined earlier.