Many users try to forward the RTSP port (554) to a browser. Browsers cannot read RTSP. You must specifically forward the HTTP Port (often under "Server Settings" or "Web Port").
If you reached the bottom of this list and viewnetcam.com still says "Not Working," your camera hardware has likely failed, or the manufacturer has permanently discontinued the DDNS service (this happened to many Foscam models in 2023). viewnetcam.com not working
suggests temporarily disabling these to test the connection. Registration Procedure Many users try to forward the RTSP port (554) to a browser
If you are setting up a new device, you must follow the specific registration procedure within the camera's internal "Network" settings page. Detailed steps for this can be found in the i-PRO Operating Instructions (page 53). Are you trying to set up a new camera for the first time, or did an existing setup suddenly stop working? If you reached the bottom of this list and viewnetcam
Small ISPs, cellular hotspots, and Starlink do not give you a public IP address. You share one with 100 other people. Port forwarding is impossible on CGNAT.
Determine if the problem is your local network or the Viewnetcam service: