Question 1

Why is port scanning useful for hackers?

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Question 2

MATCHING
Match each term with the correct statement below.
-a port scanning tool
A)Nmap
B)pcAnywhere
C)XMAS scan
D)connect scan
E)closed port
F)ACK scan
G)filtered port
H)open port
I)NULL scan

Accepted Answer

Nmap is a popular port scanning tool used to discover open, closed, and filtered ports on a network.

Answer: C
 XMAS scan is a type of port scanning technique used to identify open and closed ports on a target system by sending packets with certain flag combinations.

Answer: D
 Connect scan is a TCP scanning method that establishes a full connection with the target port and analyzes the response to determine whether it is open, closed, or filtered.

Answer: E
 A closed port is a port that is not actively listening for connections and will not respond to port scanning requests.

Answer: G
 A filtered port is a port that is actively blocking or delaying incoming network traffic and does not respond to port scanning requests.

Answer: H
 An open port is a port that is actively listening for incoming connections and is available for use.

Answer: I
 A NULL scan is a type of port scanning technique used to determine whether a target port is open by sending packets without any flags set. This method relies on the fact that an open port will not respond to such packets, while a closed port will respond with an RST (reset) packet.

Question 3

What are the problems on depending on ping sweeps to find out which hosts are "live"?

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Question 4

If subnetting is used in an organization, you can include the broadcast address by mistake when performing ping sweeps. How might this happen?

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Question 5

What is a UDP scan?

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Question 6

What makes the OpenVAS tool unique?

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Question 7

Why is it important for you as a security tester to understand and be able to create scripts?

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Question 8

How does a SYN scan work?

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Question 9

Why is port scanning considered legal by most security testers and hackers?

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Question 10

Which ports should security professionals scan when doing a test? Why?

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Quiz 5: Port Scanning