The network router is hard wired to the Internet modem using CAT5 Ethernet cable.The laptop on the right is also hard wired to the same router.The IP camera in the upper right is hard wired to a network router using CAT5 Ethernet cable.The red line in the middle represents the firewall that separates the local network from Internet.The laptop on the left of the red firewall is at a different location than the IP camera and not connected to the same network. The laptop on the left can be located anywhere in the world as long as it is connected to the Internet.All of the devices on the right of the red line are on the local network where the camera is located.Network Diagram / Wiring Installation Explanation Here is and explanation of how it works using the above network diagram to explain. Please note that although this article focuses on IP cameras, the process and concepts are the same for network video recorders and security camera DVRs. Setting up port forwarding for multiple IP cameras is also covered. This article explains ports forwarding and dynamic DNS – two concepts to understand if you want to access security cameras remotely. UPnP (universal plug-and-play) is a newer method that is supported by some routers and cameras but is not as reliable in my experience. The most common way to enable remote viewing to IP cameras is by manually setting up port forwarding on the network router that the camera is connected to. Accessing cameras remotely from desktop software (Mac and Windows) and mobile apps (iPhone and Android) is extremely common for home owners and business owners. Most users of IP cameras (network security cameras) want to access their camera remotely to see live video.
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