What does IP camera port mean?

A customer contacted CCTV Camera Pros with the following question when trying to setup his IP camera with our security camera viewer iPhone app, the iCamViewer:

What does port mean on the iCamViewer configuration screen?

CCTV Camera Pros technical support response:

Here is the long description of what a port is when used in the context of IP equipment, including video surveillance systems:

In network video surveillance systems, a port is an application or process software construct serving as a communications endpoint. The port is used by transport Layer protocols of the Internet Protocol Suite (TCP/IP), such as Transmission Control Protocol (TCP) and User Datagram Protocol (UDP). A specific port is identified by its number, commonly known as the port number, the IP address with which it is associated, and the protocol used for communication.

The complete definition can be found here on Wikipedia here:

https://en.wikipedia.org/wiki/Port_number

All IP cameras, network surveillance DVR, and network video server runs a web service on a certain port which allows client applications to connect to it in order to view video and in some cases access settings and controls. Please consult your devices user manual to see which port your camera uses.

If you can not find it, please let us know the manufacturer and model # of the device you are trying to use with the iCamViewer iPhone app, so that we can help further.