Which three actions can be configured as terminating actions in a firewall filter?

In the context of firewall filters, terminating actions are those that end the processing of filter rules once they match a particular condition. Each action instructs the firewall on how to handle a specific type of traffic after it has been evaluated against the filter.

The action that is recognized as a terminating action when configuring firewall filters is to reject traffic. When a packet is rejected, the firewall actively informs the source that the traffic has been denied, which often results in sending back an ICMP message indicating the rejection. This provides feedback to the sender that their packet was not accepted.

The allowed actions, while they can control traffic flow, do not terminate the filter evaluation process—meaning additional rules can still be applied after an allow or accept action is executed. Hence, these actions do not constitute a terminating condition for the firewall filter. Instead, they allow the packet to pass through the filter, potentially leading to additional evaluation or action on subsequent rules.

On the other hand, the discard action is also a terminating action, as it drops the packet without notifying the sender, effectively ceasing any further evaluation of the rules for that packet.

In summary, rejecting and discarding packets are terminating actions as they conclude the evaluation of that particular packet in the firewall filter, while allowing