Configure your router to block unsolicited incoming connections to your surveillance devices.
"ViewerFrame Mode Refresh" refers to a specific URL parameter commonly found in the web interfaces of networked security cameras, particularly older models from manufacturers like Tech-Wonders.com What is ViewerFrame? ViewerFrame viewerframe mode refresh
Imagine an IP camera stream. If the network drops a packet containing a keyframe, the next 30 seconds might show green blocks or a frozen image. Manually toggling the forces the client to request a new I-frame from the server, instantly restoring the image. instantly restoring the image.