Setting up DVR to be viewed from remote location:

This guideline is to assist anyone who wish to configure their CCTV DVR and internet router so that they can view or monitor site or home from the their office or any remote location through the internet.

How to configure or setup a DVR and a internet router for remote viewing

1. Connect your DVR to your router
2. Use menu on DVR to assign internal IP and gateway and port number.
   
   This Local IP must be in the same Gateway range as the Router. If you are unsure check the Router and locate the Status section or goto the Command prompt of Windows XP and type in ipconfig.
   
   Look for Gateway. If the Gateway is 192.168.1.1, then you can make the DVR's IP anything from 192.168.1.2 - 192.168.1.255.
   
   Also you will need to use the same SubNet Mask, which is typically 255.255.255.0, and also use the same gateway.
3. Next find out what port your DVR uses. The easiest way to it is by reading the manual of your DVR. Look for the network section of it.
   
   Also if it comes with network software, check out if in the connection area the software shows the port number.
   
   Also check the Server software/Programming (Network section of it) to see if the port is listed.
   
   In many cases it will be as simple as just Port 80, which is an HTTP port.
4. Set your router to forward chosen port to internal IP address of DVR.
   
   To access the Router itself, use the Gateway you just located. If the gateway is 192.168.1.1, then enter that into the location edit box of your browser and then click the Enter button. A username and a password are typically required, but it depends on a router. For Linksys use "admin", "admin". By default DLink doesn't require any username or password (It is highly recommended to change the default password).
   
   Once you're logged into the Router, in the Applications & Gaming Section / Servers of the Router, you need to add a Server/Application. Enter the port number and select TCP only. Where it says Port 0 to 0 enter the same port number twice. Or if your DVR uses for example, ports 3550, 4550, 5550, 6550, and there is nothing else utilizing these ports in between, then you can actually just enter one line, 3550 - 6550.
   
   Enter the DVR/Cameras internal IP.
   
   Enable it.
5. Set up additional entries for as many ports the DVR uses, to the same local IP. Check your DVR manual and it's networking section for all additional ports required. Also check the DVR software itself.
   
   If your router has enough free entries, you can seperate them. Use it like DVR_HTTP for the browser port, DVR_AUDIO for the audio port, etc.
   
   If you are going to use VNC to a PC DVR, then you would need to set up port 5900, and perhaps call it VNC_DVR, for example.
6. You have a static IP so you don't need to use sevices like www.dyndns.org . You just enter your static IP and your router forwards packets to your DVR.