A firewall administrator has been instructed to block common Microsoft file sharing ports due to a recent malware outbreak. Which of the following ports should be
blocked by the firewall? (Select TWO).
A.
TCP/137
B.
UDP/137
C.
TCP/139
D.
UDP/139
E.
TCP/443
F.
UDP/443
G.
TCP/445
H.
UDP/445
Why not block UDP 137 as well? Isn’t it used by NetBIOS file sharing as well?
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137 is used for Name Services (Like DNS)-UPD/TCP Port.
139 is TCP port user for NetBios session
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