Remote IP Cam Viewing

Sites to Determine IP


Public vs. Private IP Addresses

Mac Addresses

Ports

  • Ports: What are they?
  • Note: On a Mac, the Network Utility System Preference (accessible from under the Apple Menu/Systems Preferences/Network Utility) is a useful tool. You can use the Port Scan Tab to see what ports are open on your router, IP cam, and other computers or devices on your network.
  • Click here for PC-equivalent to the Mac's Port Scan Tab.
  • You Get Signal port detecting tool. Has a great feature where instead of you typing in ports one by one, this site lets you test for all common or usual ports.
  • Check Port Status - This is a great tool to use for two reasons.
    • You can't check your Public IP address from inside your network by typing http://yourpublicIPnumber into your browser's address bar (like say http://206.74.54.247) but you can check it from this site.
    • If you have managed to get a port opened (or think you have), you can test it from here.

Bandwidth Issues

  • Digitizing video produces vast amounts of data. As you know, a single high quality picture can easily be a meg or more in size. Movie quality video may be a gigabyte for each five minute segment. Accordingly, streaming IP video is not movie quality. In fact, it is more a stream of still images--generally 20 to 30 per minute--which approximates a moving image adequately in most cases. If you wish to stream video from your IP cam over the internet, you are going to have to be concerned with bandwidth issues on many levels.
    • What resolution (image quality) is your camera;
    • What if the camera frame size;
    • How many frames per second is the camera producing;
    • What is the upload speed of your internet connection; and
    • How many simultaneous connections to your camera are there likely to be?
  • A good discussion of the abobe issues can be found here.
  • Another is here and here and here.
  • You will need a "bandwidth calculator" to help you figure all of this out. There is a good one here and here.

Testing Your IP Cam

  • Introduction: Assuming you have made it to this point: opened ports, determined your Public WAN IP, etc., you can't effectively test your remote IP setup from within your local IP network (i.e., the network the camera is on). Somehow, you have to "get outside" your network. There is a really good discussion of this and some workarounds here: Testing External IP from INSIDE your own Network!!!
  • The problem of trying to access your external ("WAN") IP from inside your local area network is called "loopback." There is a good discussion of that here and here
  • This may be a solution:
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