Most network cameras do not have a built-in screen showing their IP address. Instead, they use UDP broadcast (e.g., to port 3702 for WS-Discovery or manufacturer-specific ports like 8080). Upon boot, a camera sends a UDP packet to 255.255.255.255 saying, “I am a camera with MAC address XX:XX.” A discovery tool listening on the same subnet receives this packet. The advantage of UDP here is statelessness: the camera does not need a handshake to announce its presence, allowing dozens of cameras to be discovered simultaneously without TCP overhead.
You should consider a manual UDP/TFTP update if: allintitle network camera networkcamera upd