For interzone packet filtering, which traffic is not transmitted in the outbound direction?

The correct choice pertains to interzone packet filtering, which involves managing the flow of traffic between different security zones in a network. In this context, the local zone typically represents internal resources that are considered safe or trusted.

When evaluating outbound traffic, the local zone is where trusted traffic is generally directed. Traffic from the trusted zone to the local zone does not constitute an outbound transmission since it is moving within the secure boundaries of the trusted environment rather than exiting to less secure zones. Outbound refers to traffic that is leaving a designated secure environment and moving towards less secure or untrusted zones.

In contrast, traffic from the DMZ to the untrusted zone, trusted zone to the DMZ, and trusted zone to the untrusted zone all represent movements of data from a more secure area to a less secure area, which qualifies as outbound traffic. Therefore, the scenario in which traffic is being transmitted from the trusted zone to the local zone does not fulfill the condition of being outbound, as it remains internal and does not traverse security boundaries.