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IF 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 sent back through the kernel?

A.
Nothing
Answers
A.
Nothing
B.
TCP FIN
Answers
B.
TCP FIN
C.
TCP RST
Answers
C.
TCP RST
D.
ICMP unreachable
Answers
D.
ICMP unreachable
Suggested answer: A

Explanation:

If the first packet of a UDP session is rejected by a rule definition from within a security policy (not including the clean up rule), nothing is sent back through the kernel. This is because UDP is a connectionless protocol that does not require an acknowledgement from the receiver. Therefore, if a UDP packet is dropped by the Firewall, the sender will not receive any feedback or notification.

Reference:UDP Protocol

asked 16/09/2024
Sandor Alayon
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