reflection
Getting comfortable
ACLs are good and they will provide stateless protection. Make sure you also include ports/protocols in your ACLs. i.e. only allow RTSP (TCP/UDP port 554) from your camera to BI (assuming you are using RTSP). Block everything else from camera to BI. If your camera is pulling time from NTP, then let it do that (useful if your camera overlays the time in the video). Preferably you have a local NTP server that the camera can reach and you can lock down (as oppose to an NTP on the internet).
Personally I use a stateful firewall in front of BI just because it's super easy (the way I have things set up). Prevents any spoofing of RTSP. I just noticed today that BI "calls home". Probably to check for updates or verify the license. I'll try blocking that to see if anything breaks. Just want the minimal needed ports for it to work.
Personally I use a stateful firewall in front of BI just because it's super easy (the way I have things set up). Prevents any spoofing of RTSP. I just noticed today that BI "calls home". Probably to check for updates or verify the license. I'll try blocking that to see if anything breaks. Just want the minimal needed ports for it to work.