Details of network security services are as follows:

• Availability service

  Ensures information or services can be accessed if required.

• Confidentiality service

  Ensures that sensitive data or information is not disclosed or exposed to an unauthorized entity.

• Integrity service

  Ensures that data cannot be changed or destroyed in an unauthorized mode.

• Verification service

  Ensures the legality of an entity ID.

• Authorization

  Specifies the access authority for a user to control resources.