What does a firewall check to prevent certain ports and applications from getting the packets into an Enterprise?

The correct answer is B. The transport layer port numbers and the application layer headers. A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from getting the packets into an Enterprise. Answer: A, C, D are…

Network & Perimeter Auditing

Question

Options

AThe network layer headers and the session layer port numbers
BThe transport layer port numbers and the application layer headers
CThe application layer port numbers and the transport layer headers
DThe presentation layer headers and the session layer port numbers

How the community answered

(19 responses)

A
11% (2)
B
84% (16)
D
5% (1)

Explanation

A firewall stops delivery of packets that are not marked safe by the Network Administrator. It checks the transport layer port numbers and the application layer headers to prevent certain ports and applications from getting the packets into an Enterprise. Answer: A, C, D are incorrect. These information are not checked by a firewall.

Topics

#firewall inspection#transport layer#application layer headers#port filtering

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