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How-To: Set up DVR Computer to be accessible from behind a router. - Powered by
26 Nov 2015 
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 How-To: Set up DVR Computer to be accessible from behind a router.

HOW-TO: Set up DVR Computer to be accessible from behind a router.


Step One - Configuring the DVR Computer to use a static internal IP address.

The DVR Computer is setup, by default, to use an IP address assigned to it from a DHCP (Dynamic Host Configuration Protocol) server, with the key word being dynamic. If you setup port forwarding to a device that is using a dynamic IP address, there is a good possibility that the IP address may change in the future (due to computers/DVR being rebooted, power outages, etc.) Assigning a static internal IP address will resolve this problem.


Either Minimize or Close the DVR software before continuing.


1) From the DVR computer, connected to the router, open a command prompt window.

a. Click on the Windows Start button.

b. Click on RUN.

c. In the text box next to Open, type in CMD and click OK.


Run dialog box


2) In the Command Prompt window, type in IPCONFIG /ALL and then press Enter.





You should see something similar like the following:



3) Write down the information for the following items from your command prompt window:


IP Address:

Subnet Mask:

Default Gateway:

DHCP Server:

DNS Server #1:

DNS Server #2:


Some of the above information will be used in the next steps.


4) Click on the Windows Start button again and then click on Control Panel.


5) When the Windows Control Panel opens, look for and click on "Network and Internet Connections".


Control panel


6) Next, look under the section "pick a Control Panel icon and click on "Network Connections".


pick icon


7) Right click on "Local Area Connection" and click on Properties from the popup menu.


Right click on Local Area Connection


8) When the "Local Area Connection Properties" appears, highlight "Internet Protocol" by clicking on it (do NOT uncheck the box). And then click on the Properties button.


LAN Properties


9) Click on the radio button next to "Use the following IP address".


Internet Protocol properties


10) Since the default IP schema for the majority of routers is, set the IP address for the DVR Computer to If the schema for your router is different, set the first three set of numbers to match your network schema, but change the ending set to 200. For example. if the IP address written down in step 3 was, then the schema is and you would need to set the IP address to be


11) Set the GATEWAY, SUBNET, and DNS to the same address that was written down in step 3.


12) Once the IP address and other information has been entered in, click OK on both the "Internet Protocol" properties and "Local Area Connection Properties" windows.



Step Two – Configuring your router.

For you to be able to view your cameras via the Internet, your router/modem will have to be setup to allow incoming web page requests to pass through to the DVR Computer. Presently, your router is set up to block traffic from the outside (Internet) from getting into your internal network. This is a good thing, as your router/firewall will help protect your network from unwanted intruders. What we are going to do is create a small pinhole in your firewall by opening a couple of ports to the DVR Computer. These pinholes will allow you to view your cameras remotely via the Internet.


Use the link below to find the make and model of your router. It will have step-by-step instructions on configuring some of

routers/firewalls out on the market today:


If the router is not listed, please go to the following page and see if the router is listed there:

If so, click on the link for the router, click on "skip advertisement..", and then click on HTTP on the next page.


Both guides show how to forward traffic for the web server (port 80). This guide can be used to forward the additional ports. Below is a list of ports used by the DVR software and remote applications:


Remote Console(CM3000) - Port 5550

Webcam/Webserver - Port 80

2-Way Audio - Port 9999

Remote Control (CM3000) - Port 5555

Aver's DDNS service - 53/1053*


Note: With the exception of the DDNS service, all of the ports can be changed via the Network Setup screen in the DVR software. Only the "Webcam/Webserver" and "Remote Console(CM3000)" are necessary to be forwarded for remote viewing via IE web browser.



IMPORTANT: The DVR Computer uses port 80 for serving the web page and video. Some ISPs (Internet Service Providers) block inbound traffic for port 80 along with other ports. You can to set the DVR Computer's WebViewer port to a different port number, such as 81 or 90.  If the WebViewer port is changed, you will need to include the new port number at the end of the IP address, preceded by a colon ":".

For example, if the IP address is set to and the WebViewer port was changed to 90, then you need to type in the following in the address bar:

The DVR Computer should now be accessible from across the Internet once the port is forwarded through the router/modem. You can go to which will display your external IP address. And then using that IP address, you can enter that in to an Internet Explorer web browser to access it remotely. NOTE(s): Some routers will not allow a request to originate from the LAN and then come back in to the WAN/LAN due the way NAT is implemented in the router itself. Meaning that if you try to use the external IP address to access the DVR, from a computer behind the router, it may not work. In which case, you will need to use the internal ( address to access it while on the network. And then from a remote location, use the external IP address.


You may wish to allow our service department remote into your network and set up your DVR and router for you. TechString is our premium pay-per-incident advanced help desk support for DVRs, office computers, and PC networking issues. You may simply click on the link provided below and add to cart. A service representative should be with you within minutes (TechString is open Monday - Friday, between 9 AM and 5 PM CST), and will securely remote into your DVR via the Internet. Most basic configurations take approx. 25~45 minutes.

Article Details
Article ID: 126
Created On: 20 Jan 2010 10:15 AM

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