Final answer:
To prevent students from accessing the Internet, the technician should configure the firewall to deny all traffic from the STUDENTS zone (eth2) to the PUBLIC zone (eth0).
Step-by-step explanation:
To prevent students from accessing the Internet, the technician should configure the firewall to deny all traffic from the STUDENTS zone (eth2) to the PUBLIC zone (eth0).
This can be achieved by setting up a rule that blocks any outgoing traffic from eth2 to eth0.
By doing so, the computers in the student's zone will be able to communicate with each other on the internal network, but they will not be able to access the Internet.