Connecting Closed-Circuit TV systems -- commonly known as CCTVs -- to the Internet is a novel way to monitor the security of your home or office from a remote location. A system of CCTV cameras are connected to a digital video recorder, or DVR, to create the CCTV system, which then stores digital recordings from each CCTV camera. To connect a CCTV system to the Internet, the system's DVR must be Internet-enabled. This means that the DVR will need a CAT5 cable port somewhere on the device and come with software which allows you to view feeds from the cameras in the CCTV system.
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Connect your DVR to your Internet connection's router by plugging the CAT5 cable into the rear of the DVR. Plug the other end of the cable into the router.
Reset the DVR's power if it was not off when you plugged in the CAT5 cable and follow any on-screen configuration instructions that may be necessary for the DVR to recognise the Internet connection. These configurations will vary from model to model so be sure to check your DVR's instruction manual if you are unsure what to do.
Open the web browser on your computer and type "http://192.168.1.1." Enter your Internet router's administrative credentials to gain entry to the router's administrative console.
Refer to your DVR's instruction manual to find out what port it uses for outbound Internet traffic. The default port for outbound Internet traffic is port 80. However, your DVR may use a different port for security reasons.
Navigate to the "Ports" section of your router's administrative console and ensure that the specific port for your DVR is open. If it is not, you can enter it manually into the console and save it as an open port.
Navigate to the "Devices" section of your router's administrative console to see the number of devices currently connected to your router along with their respective IP addresses. Routers assign the IP addresses automatically and in sequential numerical order as devices are connected. As a result, the DVR will have the highest numerical IP as it is the most recent device connected to the router.
Determine the external IP address of your router by visiting a website such as whatismyip.com or by using network utilities included with your computer's operating system.
Attempt to access your external IP with the DVR port appended to the end of the IP address. This should be done from a location outside of your router's network, on a different Internet connection. For example, an external IP that uses port 48 for the DVR may be entered as "http://245.231.33.21:48" in the address bar of a web browser. The numbers before and after the colon will vary depending on your specific IP address and the port that your DVR uses. If configured correctly, you should now be connected to your DVR's web interface, allowing you to view the CCTV feeds that are a part of your security system.
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