18 Questions
What is one of the limitations of signature-based intrusion detection systems?
Continuous manual task of obtaining and maintaining signature files
Which type of detection system compares the activities of a process with the expected behavior for that type of process?
Anomaly-based
Why might it be challenging to use anomaly-based intrusion detection systems?
Creating profiles to reflect expected behavior is difficult
What is a common issue faced by intrusion detection systems in a real-time analysis?
Massive amounts of data to analyze
What type of logic is used by signature-based intrusion detection systems to detect intrusions?
Signature recognition
Why does maintaining signature files pose a challenge for signature-based intrusion detection systems?
Signatures become outdated quickly due to evolving threats
What distinguishes passive measures from active measures in Intrusion Detection Systems?
Active measures involve automated intervention, while passive measures involve reporting findings to humans.
Where is intrusion detection typically performed in a network-based IDS?
At the boundary between the organization's network and the outside world.
Which type of intrusion detection system is specific to a single application?
Application-based
What is the primary function of host-based intrusion detection?
Detecting intrusions within and specific to one host.
Why are active measures in intrusion detection important?
To ensure immediate actions are taken based on IDS findings.
What defines application-based intrusion detection?
Focusing on a single application's specific requirements.
What does the National Institute of Standards and Technology (NIST) define as an intrusion?
All of the above
What is the consequence of a low proportion of actual intrusions in access attempts?
High proportion of false alarms leading to complacency
Which term refers to the process of monitoring computer systems or networks for signs of intrusions?
Intrusion detection
What is the main purpose of using an Intrusion Detection System (IDS) as stated in SP 800-31?
To prevent problem behaviors by increasing the risk of discovery and punishment for attackers
What are some of the causes of intrusions as defined by NIST in SP 800-31?
Unauthorized access attempts, authorized users attempting to gain additional privileges, and misuse of privileges by authorized users
Why does SP 800-31 mention the importance of using an IDS?
To prevent problem behaviors by increasing the perceived risk of discovery and punishment for attackers
Learn about the different locations where intrusion detection can be performed in an information system and the three types of IDS based on the location of detection functions. Understand the distinction between active and passive measures in IDS.
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