Airport Extreme and Foscam IP Camera

To successfully access an IP camera on the local network from the Internet, the following basics need to be taken care of:

1. Install the camera(s) and verify that you can access them from the local network.
2. Configure port mapping/forwarding on your router. Typically, IP cameras require at least two ports: 1) A web port for administering the camera; Usually TCP port 80, and 2) A streaming port to broadcast the camera video feed; Usually UDP port 9000. Note: You should check with your camera's documentation for the exact ports required.
3. If the camera is attached to a computer, you will need to configure the computer's firewall to open the same ports as in step 2 above.
4. Verify that your modem is in bridge mode, i.e., if the modem provides NAT & DHCP services, turn them off.
5. Test your network. Use CheckIP to determine your router's current WAN-side (public) IP address. Then, from a remote location (not from a computer on the local network), use the DynDNS Open Port Tool to verify that the required ports are open. Success is an "Open" response from the Tool.

Note: I am assuming that your wireless camera is accessible via a web browser on the local network.

1. Start the AirPort Utility > Select the 802.11n AirPort Extreme Base Station (AEBSn).
2. Select Manual Setup.
3. Verify that Connection Sharing = Share a public IP address is selected on the Internet > Internet Connection tab.
4. Select Advanced, and then, select the Port Mapping tab.
5. Click the plus sign to add a new port mapping.
6. For Service, leave the default; this will change to "Custom" once you start entering port values.
7. 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 camera. In the Private UDP Port(s) and Private TCP Port(s) boxes, enter the appropriate port values that should have been provided to you by the camera manufacturer. Click Continue.
8. In the Description box, type a descriptive name like "Internet Camera Access," and then, click Done.
9. Click on Update.

To connect to the shared Camera from a remote location using a Mac or PC:

1. Start your favorite web browser.
2. Enter the dtdns.com-provided Domain Name, followed by a colon and the Public port number that you choose in step 7 of the previous procedure. For example: http://www.mydtdnsdomainname.com:8888