If you disable the Outgoing policy, which three policies must you add to allow trusted users to connect to commonly used websites?

When the Outgoing policy is disabled on a Firebox, specific policies must be established to permit trusted users to connect to commonly used websites. The correct choice, allowing HTTP traffic, is critical for accessing a vast majority of internet resources.

Adding a policy for HTTP on port 80 is essential because it enables users to access standard websites that do not use secure connections. Web traffic is predominantly HTTP, and without this policy in place, users would be unable to reach the many web services that support standard, unencrypted browsing.

It's also important to note that while HTTPS on port 443 allows encrypted web browsing, and DNS on port 53 permits domain name resolution, the focus on the question is on enabling access via standard web protocols. The NAT policy is necessary for translating private IP addresses to public IP addresses but does not directly correspond to users accessing websites. Lastly, FTP on port 21 is less commonly used for general web access and more for file transfers, making it less relevant in this context.

In summary, adding a policy for HTTP on port 80 is fundamental, as it directly facilitates access to a primary means of browsing the internet for trusted users.