When the default policy for the netfilter INPUT chain is set to DROP, why should a rule allowing traffic to localhost exist?

Question

Options

• AAll traffic to localhost must always be allowed.
• BIt doesn't matter; netfilter never affects packets addressed to localhost.
• CSome applications use the localhost interface to communicate with other applications.
• Dsyslogd receives messages on localhost.

• A
  7% (2)
• B
  4% (1)
• C
  85% (23)
• D
  4% (1)

Explanation

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