What Is Port Forwarding - Lorex LH600 SERIES Instruction Manual

Advanced Remote Monitoring Using DDNS

What is Port Forwarding?

You need to enable port forwarding on your router to allow for external communications with your
system for the following ports:
• 80 and 554 (default)
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
External IP
216.13.154.34
Internet
Figure 24.2 Port forwarding diagram.
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 192.168.0.3:554).
To port forward, use the Lorex Auto Port Forwarding Wizard (included in the Software CD), or use
the AUTOPORT feature on the system.
98
Router
Internal IP
192.168.0.1
Internal Network
PC
Internal IP
192.168.0.2
DVR
Internal IP
192.168.0.3