Default Firewall Filter Behavior

C

The correct answer to the question is A. An implicit deny and the filter evaluation continues to the next term.

When a packet matches a term in a firewall filter, but no terminating action is specified, the default behavior is an implicit deny. This means that the packet is blocked and the filter evaluation continues to the next term. If there are no more terms in the filter, the packet is dropped.

Let's consider an example. Suppose we have a firewall filter with the following terms:

pythonCopy code
term 1 {     from {         protocol tcp;         port http;     }     then {         count http-traffic;     } } term 2 {     from {         protocol tcp;         port ssh;     } } 

In this example, term 1 matches TCP traffic on port 80 (HTTP) and counts the traffic, but does not specify a terminating action. If a packet matches term 1, the default behavior is an implicit deny, and the filter evaluation continues to term 2. If a packet matches term 2, it is dropped because there are no more terms in the filter.

It's worth noting that if the last term in a firewall filter does not specify a terminating action, the default behavior is still an implicit deny, but there are no more terms for the filter evaluation to continue to, so the packet is dropped.

In conclusion, when a term in a firewall filter is matched but no terminating action is specified, the default behavior is an implicit deny, and the filter evaluation continues to the next term.