Manual do usuário LOREX Technology Surveillance Systems

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THE BASICS OF REMOTE
VIDEO ACCESS

Consumer Guide


English Version1.0























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Copyright © 2006 Lorex Technology Inc.

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Table of Contents Introduction............................................................................................................................................................. 2 Background to the Technology............................................................................................................................... 3 Types of Surveillance Systems..........................................................................................................................

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Background to the Technology Types of Surveillance Systems In discussing video surveillance systems there are three types to consider; – Direct Surveillance – Local Network Surveillance – Remote Network Surveillance Direct Surveillance Systems display the video images on a monitor or PC-system screen without using a data network, as shown in the following figure. Only the cameras connected to the monitor or the PC-system can be viewed on their respective systems; PC Video System Monitor Figu

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PC Video System Monitor Video Server Network Switch Network Camera PC (a) Figure 2: Local Network Surveillance In the figure 2 above, the video is displayed on a computer, PC(a), that is connected to the Local Area Network. In the following figure 3, the video is being monitored by a computer PC(b) that is attached to the Internet at some remote location. Hence all connections from the remote computer needs to traverse the Internet Gateway between the Internet, or Wide Area Network (WAN) and

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PC Video System Monitor Video Server Gateway/Switch Network Camera PC (b) Figure 3: Remote Network Surveillance When you are viewing the video signals across the Internet, you need to consider; How do I configure my gateway/router? This question depends on the particular model of router you have. Nearly all models support some form of inbound TCP/IP routing, or port forwarding, and there are many resources to help you to forward an incoming connection to your video device, including online gu

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rent them in blocks. If, like most broadband Internet users, you have a service provider who assigns you a temporary IP Address and changes it from time to time, then you will need to sign up for a Dynamic DNS service. What is the difference between a Static and Dynamic IP Addresses? IP Addresses are the numbers used by the Internet Protocol(IP) to identify your computer or device. Every computer or device that wants to communicate over the Internet must have an address, unique to that com

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maps to 192.168.1.66 port 8001 What is port forwarding? Internet Protocols use IP Addresses to identify devices on the Internet, and ports to identify specific services within the devices. When a network gateway maps the messages coming from the Internet to individual internal IP Addresses(i.e. devices) on the LAN it does so on a per port basis. This is known as port forwarding. Internet LAN Device A msg to 216.176.57.75 port 8000 Gateway/Router Device B Figure 4: Example of Port Forwarding

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Once this is up and working you should then configure the gateway/router for remote network access and finally sign up for DDNS service and then set up the video device to work with the service. What does setting up a gateway/router involve? Since there is a wide variety of gateway/routers available, you may have one that is not explicitly described in the video device setup documentation. In this case use the video device setup information and the gateway/router manual information to transl

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from the previous one. Gateway A gateway is a device that connects 2 different networks together. The gateway will perform any address and protocol translations required so that messages can flow between the networks. IP Address Computing devices connected to the Internet, are identified by a unique network number. This number is called an IP Address (IP = Internet Protocol). Each IP Address consists of 4 numbers in the range 0-255, and is written as; aaa.bbb.ccc.ddd, e.g. 216.176.57.75 MA

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