What is the camera brand?
The first step is to discover the ip address and port of the camera. Usually, each camera manufacturer offers a software tool that is able to scan your network to retrieve the IP address of the camera.
For example, with a Uniview camera, you would use their EZTool, as described here: https://rtspplayer.com/?p=238
If the camera is ONVIF compatible, you could be able to discover the camera using ONVIF Device Manager: https://sourceforge.net/projects/onvifdm/
Finally, once you get the ipaddress, you only need to type it in your browser, using this format: http://ipaddress:port/
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