Intrusion Detection Systems (IDS) Classification
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Questions and Answers

What is the primary definition of an intrusion?

  • An attempt to compromise the integrity, confidentiality, or availability of a resource (correct)
  • A penetration of a system's access controls
  • An unauthorized access to a system
  • A malicious software attack on a system

    • What is the term for an individual who is not authorized to use the computer and penetrates a system's access controls?

  • Masquerader (correct)
  • Misfeasor
  • Clandestine user
  • Insider

    • What is the term for a legitimate user who accesses data or programs for which they are not authorized?

  • Insider
  • Clandestine user
  • Masquerader
  • Misfeasor (correct)

    • What is the term for an individual who seizes supervisory control of a system to evade auditing and access controls?

    <p>Clandestine user (C)</p> Signup and view all the answers

    What is the term for an individual who attacks a system via communication links, such as the Internet?

    <p>Hacker (B)</p> Signup and view all the answers

    What is the term for malicious software that attacks a system, such as a Trojan horse or Virus?

    <p>MalWare (D)</p> Signup and view all the answers

    What is an example of an intrusion attack?

    <p>All of the above (D)</p> Signup and view all the answers

    What type of intruder is an individual who has authorized access to a system but misuses their privileges?

    <p>Misfeasor (D)</p> Signup and view all the answers

    What is an example of a hacker's behavior motivated by thrill of access and/or status?

    <p>Accessing a system to gain prestige in the hacking community (A)</p> Signup and view all the answers

    What is the primary goal of a Denial of Service (DOS) attack?

    <p>To prevent legitimate users of a service from using that service (C)</p> Signup and view all the answers

    What is an example of an intruder's behavior?

    <p>Using an unsecured modem to access an internal network (A)</p> Signup and view all the answers

    What is the purpose of an intrusion detection system (IDS)?

    <p>To detect and alert on potential security threats (A)</p> Signup and view all the answers

    What is address spoofing?

    <p>A malicious user using a fake IP address to send malicious packets to a target (A)</p> Signup and view all the answers

    What is an example of a buffer-overflow attack?

    <p>The 2000 Outlook Express vulnerability (B)</p> Signup and view all the answers

    What is a major problem resulting from intruder activities?

    <p>Slowing down system performance for legitimate users (A)</p> Signup and view all the answers

    What is a threat to computer systems today?

    <p>Organized groups of hackers (D)</p> Signup and view all the answers

    What is the primary purpose of an Intrusion Detection System?

    <p>To monitor and analyze system events for potential security threats (D)</p> Signup and view all the answers

    What is the role of a sensor in an Intrusion Detection System?

    <p>To collect and forward data to the analyzer (B)</p> Signup and view all the answers

    What is the primary function of an analyzer in an Intrusion Detection System?

    <p>To determine if an intrusion has occurred (C)</p> Signup and view all the answers

    What is the purpose of reporting in an Intrusion Detection System?

    <p>To generate conclusions and act on analysis results (B)</p> Signup and view all the answers

    Why are firewalls not sufficient to detect all attacks?

    <p>Because they only protect against external attacks (D)</p> Signup and view all the answers

    What is the main difference between a firewall and an Intrusion Detection System?

    <p>A firewall blocks traffic, while an IDS detects attacks (D)</p> Signup and view all the answers

    What type of data can be input to a sensor in an Intrusion Detection System?

    <p>Any part of a system that could contain evidence of an intrusion (B)</p> Signup and view all the answers

    What is the main goal of an Intrusion Detection System?

    <p>To detect and alert on potential security threats in real-time (B)</p> Signup and view all the answers

    What is the primary function of the output of an Intrusion Detection System (IDS)?

    <p>To indicate that an intrusion has occurred (B)</p> Signup and view all the answers

    What is the purpose of the user interface in an IDS?

    <p>To view output from the system or control its behavior (D)</p> Signup and view all the answers

    What is a requirement for an IDS to be able to do?

    <p>Run continually with minimal human supervision (B)</p> Signup and view all the answers

    What is meant by an IDS being 'fault tolerant'?

    <p>It can recover from system crashes and re-initializations (B)</p> Signup and view all the answers

    What is a requirement for an IDS to resist?

    <p>Subversion (C)</p> Signup and view all the answers

    Why must an IDS impose a minimal overhead on the system it is running on?

    <p>To prevent degradation of system performance (A)</p> Signup and view all the answers

    What is meant by an IDS providing 'graceful degradation of service'?

    <p>If some components stop working, the rest are affected as little as possible (C)</p> Signup and view all the answers

    What is a requirement for an IDS to be able to do in terms of configuration?

    <p>Be able to be configured according to the security policies of the system being monitored (D)</p> Signup and view all the answers

    What is a key benefit of dynamic reconfiguration in Intrusion Detection Systems?

    <p>Faster response to threats without restart (A)</p> Signup and view all the answers

    What is a limitation of traditional IDS response?

    <p>Inability to respond automatically (C)</p> Signup and view all the answers

    What is the advantage of active response in IDS?

    <p>Automatic response to detected threats (D)</p> Signup and view all the answers

    What is a challenge in investigating multiple alarm types?

    <p>Prioritizing which alarm to investigate (B)</p> Signup and view all the answers

    What is a characteristic of signature detection in IDS?

    <p>Examining application, transport, and network layers (C)</p> Signup and view all the answers

    What is the purpose of the analysis module in IDS?

    <p>To refine intrusion detection parameters and algorithms (D)</p> Signup and view all the answers

    What is a benefit of anomaly detection in IDS?

    <p>Detection of Denial of Service attacks and worms (A)</p> Signup and view all the answers

    What is the role of security administration in IDS?

    <p>Designing prevention techniques (A)</p> Signup and view all the answers

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