[Internet] ──> [Firewall / VPN Gateway] ──> [Protected Local Network] ──> [IP Camera]

Security-conscious engineers removed the cameras from the public-facing internet entirely, placing them behind Virtual Private Networks (VPNs) or strict firewall Access Control Lists (ACLs).

Enable the filter and add only the specific local IP addresses or subnets allowed to view the video stream. Share public link

You were looking for a backdoor.

Are you looking to learn more about techniques or how to secure legacy IoT devices from these kinds of searches?