You want to do an ICMP scan on a remote computer using hping2. What is the proper syntax?

Question

Options

• Ahping2 host.domain.com
• Bhping2 --set-ICMP host.domain.com
• Chping2 -i host.domain.com
• Dhping2 -1 host.domain.com

• A
  3% (1)
• B
  5% (2)
• C
  3% (1)
• D
  90% (36)

Explanation

hping2 ICMP Scan Syntax

Option D (hping2 -1 host.domain.com) is correct because the -1 flag (the number one) tells hping2 to use ICMP mode, sending ICMP echo request packets - similar to a traditional ping but with more control and flexibility.

Why the distractors are wrong:

• Option A (hping2 host.domain.com) uses no flags, which means hping2 defaults to TCP mode on port 0, not ICMP.
• Option B (--set-ICMP) is completely fabricated syntax - this flag does not exist in hping2.
• Option C (-i) is a valid hping2 flag, but it sets the interval between packets, not the protocol type.

Memory Tip: Think of -1 as shorthand for "ICMP = 1", since ICMP is IP Protocol Number 1. Similarly, -2 enables UDP mode - so the number maps to a protocol! If you remember that ICMP has protocol number 1, you'll never confuse -1 with anything else.

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