I have 2 systems running, both with Hikvision cameras. One is a BI computer, and the other is a Hikvision NVR. On both systems I have the cameras on POE switches connected to the LAN. I have seen various posts recommending subnets using 2 nic cards on a BI computer using one nic to feed the cameras directly to the computer, not the LAN. Also, I've seen recommendations on NVR's to run the cameras directly into the NVR and not on the LAN. At this time I do not use any remote access devices, and certainly don't have any ports forwarded. My question: is my system safe with the cameras connected to the LAN? If not, how do cameras on a LAN access the internet causing issues? Also, once a VPN (Asus router/OpenVPN) is established, is any of this a concern?