Is the first packet of an UDP session is rejected by a rule definition from within a security policy (not including the clean up rule), what message is send back through the kernel?
My ANS: D
5. For packets that do not pass inspection and are rejected by the rule definition, a negative
acknowledgment (NACK) is sent (i.e. RST packet on TCP and ICMP unreachable on
UDP).
Answer D. The device sends the source an ICMP port unreachable message when the following conditions are met:
The UDP packet is destined for the device.
The packet's port number does not match the corresponding process.
Correct, because packet ist REJECTED and not dropped
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