Multiple choice

Which of the following firewalls receives protocol data units, interprets them and passes through the same or different protocol data units that achieves either the same result or a modified result?

  1. Gaurd

  2. Personal firewall

  3. Packet filtering gateway

  4. Digital signature

  5. Message confidentiality
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A Correct answer
Explanation

It receives protocol data units, interprets them, and passes through the same or different protocol data units that achieve either the same result or a modified result.

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