SSCP: Systems Security Certified PractitionerDemo

By ISC · Question Mode

QuestionQ592

Network and Communications Security

Which of the following countermeasures is most appropriate for preventing potential intrusion or damage resulting from wardialing attacks?

  • A Monitoring and auditing for such activity
  • B Require user authentication
  • C Making sure only necessary phone numbers are made public
  • D Using completely different numbers for voice and data accesses
Explanation

Wardialing can discover a reachable remote-access modem but does not itself authorize access. Requiring user authentication ensures that only a verified user can use the discovered connection, making it the appropriate preventive control. Authentication verifies a user, process, or device before access to system resources is allowed.

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