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Authors:
William Stallings
Chapter:
Computer And Network Security Concepts
Exercise:
Review Questions
Question:4 | ISBN:9781292158587 | Edition: 7

Question

List and briefly define categories of security services.

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Answer

List of security services are

  • Authentication
  • Access control
  • Data Confidentiality
  • Data Integrity
  • Nonrepudiation

 

Brief explanation:

Authentication:

The authentication service is concerned with assuring that a communication is authentic.

Access control:

Access control is the ability to limit and control the access to host systems and applications via communications links.

Data Confidentiality:

Confidentiality is the protection of transmitted data from passive attacks.

Data Integrity:

As with confidentiality, integrity can apply to a stream of messages, a single message, or selected fields within a message.

Nonrepudiation:

Nonrepudiation prevents either sender or receiver from denying a transmitted message. Thus, when a message is sent, the receiver can prove that the alleged sender in fact sent the message. Similarly, when a message is received, the sender can prove that the alleged receiver in fact received the message.

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