Re:PoE basics and beyond: What every engineer should know
by nucleardog on Wednesday October 22, 2025 @01:10PM
(#45672136)
I did. Implemented a "simple" solution (simple for anyone who is going to be setting up their own IP camera system and NVR):
Cameras are on their own VLAN. Port isolation is enabled so they can't connect to each other. Only connectivity allowed to/from that VLAN is from the cameras to the router for NTP, and from the NVR to the cameras.
So if you plug in you can... check the current time on my router. Maybe see how many other cameras are on that segment? Likely not going to get very far given you're already caught on camera, an alert's been fired, and pretty soon I'm going to be making a call to the police.
Cameras are on their own VLAN. Port isolation is enabled so they can't connect to each other. Only connectivity allowed to/from that VLAN is from the cameras to the router for NTP, and from the NVR to the cameras.
So if you plug in you can... check the current time on my router. Maybe see how many other cameras are on that segment? Likely not going to get very far given you're already caught on camera, an alert's been fired, and pretty soon I'm going to be making a call to the police.