While performing a ping sweep of a subnet you receive an ICMP reply of Code 3/Type 13 for all
the pings sent out.
What is the most likely cause behind this response?
A.
The firewall is dropping the packets.
B.
An in-line IDS is dropping the packets.
C.
A router is blocking ICMP.
D.
The host does not respond to ICMP packets.
Explanation:
Type 3 message = Destination Unreachable [RFC792],Code 13 (cause) =
Communication Administratively Prohibited [RFC1812]
C
Questions says Code 3/Type 13, explanation says Code 13/ type 3
What is the correct?
it’s C
refer :http://www.nthelp.com/icmp.html
It should be Type 3 code 13