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6.3 Port Forwarding
TCP/IP (Internet) networking uses software ports. Ports can be thought of as channels on
your television. By default, all web page traffic is on channel (port) 80. By default, the IP
Camera uses port 80 to deliver its web page to your browser. Therefore, both of these
channels (ports) must be open (not blocked by your router/firewall) to incoming traffic in
order for you to connect to the camera from the Internet. Also, these two ports must be
forwarded or redirected to the camera’s LAN IP address by your gateway router. Your
router’s setup software should provide a utility for port forwarding or redirecting.
Before setting up port forwarding, it’s best to configure your IP Camera to use a static
LAN IP since your port forwarding setup will need to be updated if the camera’s LAN IP
addresses changes.
6.4 Default Gateway
Devices (PCs, cameras, etc.) on your network connect to the Internet via a gateway.
For most home networks, a NAT type router serves as the gateway. For business LANs,
the gateway may be a PC running gateway software. In order for any device on your
network to get connected to the Internet, it must know the LAN IP address of your
gateway. If your camera is set up to use DHCP, then it will retrieve this information
automatically from your router.
However, if you have configured your camera to use a static IP address, you must also be
sure that you have set the correct gateway IP address in order to connect your camera to the
Internet.
You camera is now live on the Internet. Browsing your camera from the Internet is the
same as browsing on your LAN except that you must enter your WAN IP address (or
camera domain name if you’ve set up a DDNS service) instead of the LAN IP address.
Note: Forwarding ports to your camera does not pose any additional security
risk to your LAN.
Note: It may not be possible to test WAN (Internet) access to your cameras
from a PC connected to the LAN. To be sure that your cameras are accessible
by the Internet, you should contact someone you know with Internet access
(preferable broadband) and have them enter your WAN IP address into their
browser.
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