1. Configure a Static Route:Go to the OPNsense web interface.Navigate to the "System" menu and select "Routes."Click on the "+" icon to add a new static route.In the "Destination network" field, enter the network address of the camera's subnet, which is 192.168.1.0/24.In the "Gateway" field, enter the IP address of the switch that connects to the camera. This will likely be an IP address within the 10.10.0.0/16 subnet.Save the changes.2. Configure NAT (if necessary):If the computers on the 10.10.0.0/16 subnet need to access the camera using its original IP address (192.168.1.X), you'll need to set up NAT.Navigate to the "Firewall" menu and select "NAT."Add a new NAT Port Forward rule.In the "Interface" field, select the interface that connects to the 10.10.0.0/16 subnet.In the "Protocol" field, select the appropriate protocol (e.g., TCP or UDP).In the "Destination" section, enter the original IP address and port of the camera (e.g., 192.168.1.X:port).In the "Redirect target IP" field, enter the IP address of the camera.Save the changes.3. Ensure Firewall Rules Allow Traffic:Make sure that there are no firewall rules blocking traffic between the 10.10.0.0/16 subnet and the 192.168.1.0/24 subnet.Navigate to the "Firewall" menu and select "Rules."Check both the WAN and LAN interfaces for any rules that might block traffic between these subnets. Adjust or add rules as necessary.After completing these steps, computers on the 10.10.0.0/16 subnet should be able to reach the camera at 192.168.1.X. If you're still encountering issues, double-check the configuration and ensure that the devices are properly connected to the network.
Instead of posting wrong information presented by ChatGPT I would just throw away that camera. You cannot change the IP address? Well, what else does this thing do in your network you're not aware of?
Regarding your OPNsense question: set up another LAN (VLAN or seperate cable) for the camera. At least you'd have some control over the traffic