The most effective way to ensure that all web traffic is filtered is toenforce the use of a web proxyvia user policy. By configuring the ChromeOS devices to use aproxy server, all internet traffic will be routed through the proxy, where filtering rules are applied.

Verified Answer from Official Source:

The correct answer is verified from theGoogle ChromeOS Network Management Guide, which recommends using a web proxy to manage and filter web traffic efficiently.

"To enforce web filtering policies, configure a web proxy through user policies. This ensures that all internet traffic passes through the filtering system."

Web proxies allow IT administrators to manage and restrict access to websites centrally, providing consistent and scalable content filtering across the organization.

Objectives:

Implement web filtering using a proxy.

Enforce secure internet access policies.