An OT network consists of multiple FortiGate devices. The edge FortiGate device is deployed as the secure gateway and is only allowing remote operators to access the ICS networks on site. Management hires a third-party company to conduct health and safety on site. The third-party company must have outbound access to external resources.
As the OT network administrator, what is the best scenario to provide external access to the third-party company while continuing to secure the ICS networks?
A. Configure outbound security policies with limited active authentication users of the third-party company.
B. Create VPN tunnels between downstream FortiGate devices and the edge FortiGate to protect ICS network traffic.
C. Split the edge FortiGate device into multiple logical devices to allocate an independent VDOM for the third-party company.
D. Implement an additional firewall using an additional upstream link to the internet.
