If your cameras are PoE, you can use an NVR that doubles as a PoE switch and can create a separate network for the cameras. Some NVRs will also relay RTSP from

If your cameras are PoE, you can use an NVR that doubles as a PoE switch and can create a separate network for the cameras. Some NVRs will also relay RTSP from them so it will be accessible on your LAN. Alternatively, adding static routes to devices will allow them to see the cameras locally. Unfortunately, the NVR will probably have the same type of vulnerabilities as the cameras in question (they come from same manufacturers). Or, use something we've built :)