Port Forwarding Guide
In many instances, Port Forwarding is required to provide remote access to NueCam recorder features and functions.
Due to the diversity of networking environment, difference in routing-device make, model, function and features, as well as a host of other topological and environmental factors, a single definitive Port Forwarding document is not currently available for technical reference.
This document is intended as a ‘guide’ for technicians who are in need of basic assistance with Port Forwarding, and contains reference to external resources. Please review this document in its entirety before calling NueCam's Technical Support for assistance with Port Forwarding.
The Port values most often Forwarded (pre-defined) on current NueCam's recorder models are …
HTTP = 80
HTTPS = 443
SERVER = 8000
RTSP = 554
[NOTE: Forwarding the HTTPS port (443) is NOT generally recommended.]
The above are examples of default port assignments. Port assignments ‘can’ be changed to accommodate ISP port restrictions and/or rules as defined by your network administrator, etc.
[EXAMPLE: Port 80, the default HTTP port, is frequently changed to another value.]
[Note: If your Network environment does not have DHCP server enabled, please contact your network administrator to find out what IP address you can use for the recorder.]
In some instances, you can allow the local DHCP server to assign the recorder an IPv4 address, then disable DHCP on the recorder. This will assign the DHCP-issued IPv4 address statically.
[NOTE: This method of assigning an IPv4 address to a recorder should be considered a ‘shortcut’ and is not appropriate for all situations.]
In most instances, your local IT/Network Administrator will provide a private IPv4 address for the recorder. This IPv4 address is the address to which you will be forwarding your ports.
In order for Port Forwarding to be successful, the following basic requirements must be met:
A. Your recorder is behind a firewall; often provided by your local routing device. [This device generally issues IPv4 addresses via DHCP as well.]
B. Your recorder has already received an IPv4 address that starts with 192.168.x.x, 10.x.x.x, 172.16.x.x, 172.32.x.x via DHCP. [It is highly recommended that you statically assign your IPv4 address to the recorder]
C. Your recorder has already received an IPv4 address that starts with 192.168.x.x, 10.x.x.x, 172.16.x.x, 172.32.x.x via static assignment…
D. Your networking environment provides internet access.
[Note: IPv4 addresses starting with 169.x.x.x indicate a misconfigured network connection on your system. Contact your local IT/Network Administrator or Internet Service Provider for assistance with this issue.]
The actual task of Forwarding Ports through a firewall should always be performed by an experienced IT professional. That said, with the proliferation of commercial/residential intranet/internet technology today, it’s often left up to vendors, and even the residents/business owners themselves, to perform any required Port Forwarding operation(s). Fortunately, there are an abundance of informational resources available to assist with Port Forwarding.
When encountering an environment where Port Forwarding is required, and the installer is unfamiliar with the process, the routing hardware, etc, a good reference to use is www.portforward.com. This site has detailed walkthroughs for hundreds of current and legacy routing devices. If you do not find your routing devices’ Port Forwarding walkthrough in the ‘List of all Routers’ available on www.portforward.com, often you can often find a walkthrough for earlier/later models from the same manufacturer that are similar enough to the unit upon which you are working to assist in getting the job done.
In regard to Port Forwarding in general, even the most experienced technician can run into trouble. Below are a couple of example/scenarios where you might run into problems getting Ports Forwarded through a firewall…
[Example/Scenario #1 – Nested Configuration] A nested configuration exists under the following conditions…
* There are multiple routing devices in play and the recorder is directly connected to a ‘non-internet-facing’ routing device. This type of environment is likely ‘managed’ by an IT/Network Administrator or similar entity.
* The routing device to which the recorder is connected is non-internet-facing, and is connected to an internet-facing Modem. [The modem will possibly need to be configured for ‘Bridged Mode’.
[Example/Scenario #2 – Combination Router/Modem Configuration]
* The routing device is a single combination Router/Modem. Sometimes, with these devices, the Modem feature(s) prevent the ports from successfully forwarding through the devices’ own Firewall. You can be relatively sure that this scenario is in play if you are 100% certain that the Router/Modem Port Forwarding is correct, but the ports simply will not open.
* In this situation, it is often required to have the Internet Service Provider configure your combination Router/Modem as a pure Modem in order to enable Bridged Mode. This most often disables the devices Routing features. The technician might then need to install a separate Router behind the Modem, hence creating the Nested Configuration outlined above.
[Example/Scenario #3 – ISP Port Blocking]
* The Internet Service Provider has blocked certain ports… port 80 is a perfect example.
* If you encounter this scenario, change the required port definition to another value; if forwarding port 80 is disallowed, change the port definition on the recorder to 8080 (or another valid port), and open that port instead.
You can test the success/failure of your Port Forwarding operation by visiting http://www.canyouseeme.org. Simply type your newly Forwarded Port value into the Port to Check field and click the ‘Check Port’ button. If you are experiencing problems getting your Port Forwarding to …
Forward Ports, you can contact your Internet Service Provider for assistance. In some cases, NueCam's Technical Support Engineers may also be of assistance with Port Forwarding.
If you desire Port Forwarding assistance of the NueCam's Technical Support team, please have the following resources available.
* Model number of the NueCam recorder
* A Windows PC connected to the same network subnet/segment as the Hunt recorder
* Show My Pc installed on the Windows PC. (the green link)
* Access credentials for the routing device.
* IPv4 address and port assignment/numbers (other than default) defined on the recorder