Lorex LH300 Series NETWORK EXAMPLE, How port forwarding works, DVR, NOTE:, Router, Router, Internet, External IP, Internal IP, Internal IP, Internal IP, 192.168.0.3:80

Remote Viewing Using Easy Connect

How port forwarding works

You need to enable port forwarding on your router to allow for external communications with your system for the following port:

• 80 (HTTP port)

NOTE: For added security, we strongly recommend changing HTTP port 80 on the system to any desired port—the port must not blocked by your Internet service provider (ISP).

Computers, DVRs, and other devices inside your network can only communicate directly with each other within the internal network. Computers and systems outside your network cannot directly communicate with these devices. When a system on the internal network needs to send or receive information from a system outside the network (i.e. from the Internet), the information is sent to the router.

NETWORK EXAMPLE

Router	Router
External IP	Internal IP
216.13.154.34	192.168.0.1

Internet Internal Network

Figure 26.0 Internal and External network diagram.

PC

Internal IP

192.168.0.2

DVR

Internal IP

192.168.0.3

When a computer on the Internet needs to send data to your internal network, it sends this data to the external IP address of the router. The router then needs to decide where this data is to be sent to. This is where setting up Port Forwarding becomes important.

Port Forwarding tells the router which device on the internal network to send the data to. When you set up port forwarding on your router, it takes the data from the external IP address:port number and sends that data to an internal IP address:port number (i.e Router External IP 216.13.154.34 to DVR Internal IP 192.168.0.3:80).

The instructions found online in the Router Configuration Guides will assist you in the port forwarding configurations for a selection of different router models. Visit our Consumer Guides Support website at http://www.lorextechnology.com for more details.

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