We installed 4 network cameras (PoE) in the office, all on the same network. I want to view the cameras from my phone but I don't know the security risks. If a hacker connects to a camera, can they see the entire network? Can they access the camera management interface (IP:8080) and reset all cameras?
Do the cameras have default passwords? Do I need to set a strong password for the admin panel? Can the camera firmware be updated, or will staying on an old version cause vulnerabilities?
I want to access the cameras from the internet like remote desktop, but I didn't want to open port 8080. Access via VPN? Is it safe to use cloud camera platforms (Hikvision, Axis)? Is it better to keep it local or move to the cloud?