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Which of the following is the quickest FIRST step towar…

A new security analyst is given the task of determining whether any of the company’s servers are vulnerable to
a recently discovered attack on an old version of SSH. Which of the following is the quickest FIRST step toward
determining the version of SSH running on these servers?

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A.
Passive scanning

B.
Banner grabbing

C.
Protocol analysis

D.
Penetration testing

Explanation:
B: Banner grabbing looks at the banner, or header information messages sent with data to find out about the
system(s). Banners often identify the host, the operating system running on it, and other information that can be
useful if you are going to attempt to later breach the security of it. Banners can be snagged with Telnet as well
as tools like netcat or Nmap. In other words, Banner grabbing looks at the banner, or header, information
messages sent with data to find out about the system(s). Thus, a quick way to check which version of SSH is
running on your server.

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