CYB236 Chapter 8: Host-based Intrusion Detection Systems
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Questions and Answers

What is the primary purpose of a shim in a host-based IDPS?

  • To intercept, analyze, and determine allowing or denying (correct)
  • To analyze network traffic
  • To log security events
  • To generate alerts

    • What type of information is typically logged by host-based IDPSs?

  • Timestamp, event type, event details, and prevention action (correct)
  • Only IP address and port information
  • Only timestamp and event type
  • Timestamp, event type, and user IDs

    • What is a capability of host-based IDPSs?

  • Code Obfuscation
  • Network Traffic Encryption
  • Network Configuration Monitoring (correct)
  • Centralized Reporting

    • What is a limitation of host-based IDPSs?

    <p>Technology limitations and conflicts with existing security controls (A)</p> Signup and view all the answers

    What is a type of event detected by host-based IDPSs?

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

    What is a prevention capability of host-based IDPSs?

    <p>Code Analysis to prevent execution (B)</p> Signup and view all the answers

    What is a security capability of host-based IDPSs?

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

    What is a detection capability of host-based IDPSs?

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

    What is the primary function of a host-based IDPS?

    <p>To monitor a single host and the events occurring within it for suspicious activity (C)</p> Signup and view all the answers

    What is the typical component of most host-based IDPSs?

    <p>Detection software known as Agents (A)</p> Signup and view all the answers

    What does an agent monitor in a server?

    <p>Both the operating system (OS) and common applications (A)</p> Signup and view all the answers

    What type of agent is designed to monitor a specific application service only?

    <p>Application-based IDPS (B)</p> Signup and view all the answers

    Where are agents typically deployed in a host-based IDPS?

    <p>On existing hosts on the organization's networks (A)</p> Signup and view all the answers

    What do agents in a host-based IDPS perform?

    <p>Both detection and prevention actions (B)</p> Signup and view all the answers

    What is monitored by agents designed to monitor users' hosts?

    <p>Both the operating system (OS) and common client applications (A)</p> Signup and view all the answers

    What is the benefit of a host-based IDPS?

    <p>It provides protection to a single host and the events occurring within it (B)</p> Signup and view all the answers

    What is the main purpose of Network Traffic Filtering?

    <p>To stop unauthorized access and acceptable use policy violations (C)</p> Signup and view all the answers

    What is the primary function of Filesystem Monitoring?

    <p>To prevent files from being accessed, modified, replaced, or deleted (A)</p> Signup and view all the answers

    What is the purpose of Removable Media Restriction?

    <p>To prevent malware from being transferred or copied to or from the host (A)</p> Signup and view all the answers

    What is the purpose of Audiovisual Device Monitoring?

    <p>To indicate if the host has been compromised (C)</p> Signup and view all the answers

    What is the purpose of Host Hardening?

    <p>To detect the disability of security function and enable it again (D)</p> Signup and view all the answers

    What is the purpose of Process Status Monitoring?

    <p>To monitor the status of processes or services and the status of security programs (D)</p> Signup and view all the answers

    What is the purpose of Network Traffic Sanitization?

    <p>To sanitize the network traffic that they monitor (C)</p> Signup and view all the answers

    What is unique about updating agents in host-based IDPSs?

    <p>An agent’s update capability is related to the type of operating system on which it is deployed (D)</p> Signup and view all the answers

    What is the main purpose of Management in host-based IDPSs?

    <p>To offer similar management capabilities (A)</p> Signup and view all the answers

    Study Notes

    Overview of Host-Based IDPS

    • Shim serves to intercept and analyze data between the application layer and the operating system, enhancing security behavior.
    • Host-based Intrusion Detection and Prevention Systems (IDPS) typically log events such as failed logins, unauthorized access attempts, and system file changes.

    Capabilities and Limitations

    • Host-based IDPSs can monitor user activity, detect policy violations, and assess the integrity of files.
    • A limitation includes the inability to detect network-based attacks, as they focus on host rather than network level monitoring.

    Detection and Prevention

    • Host-based IDPSs can detect events like file manipulations, configuration changes, and unusual application behavior.
    • Prevention capabilities include blocking unauthorized access attempts and terminating malicious processes.
    • Security capabilities consist of ensuring compliance with security policies and monitoring for malware on the host.

    Functionality and Components

    • The primary function is to enhance security at the host level through continuous monitoring and real-time analysis.
    • A typical component is the agent, which resides on the host and performs monitoring tasks.

    Agent Roles and Deployment

    • Agents monitor events and activities such as user access and application performance on servers.
    • Specific application agents track activity solely related to designated services.
    • Agents are generally deployed on individual hosts, such as servers and endpoint devices.

    Agent Monitoring and Benefits

    • Agents designed for user hosts monitor user actions, file access, and applications.
    • The benefit of utilizing a host-based IDPS includes granular monitoring leading to detailed insights and responses to threats.

    Specialized Monitoring Functions

    • Network Traffic Filtering focuses on analyzing and blocking unauthorized or suspicious network connections.
    • Filesystem Monitoring safeguards against unauthorized changes in files and directories.
    • Removable Media Restriction prevents the unauthorized use of USB drives and external storage.
    • Audiovisual Device Monitoring ensures that devices like webcams and microphones are not exploited for surveillance.
    • Host Hardening aims to strengthen security configurations and reduce vulnerabilities on the host system.
    • Process Status Monitoring keeps track of running processes to identify aberrant behavior or unauthorized execution.
    • Network Traffic Sanitization cleanses network data streams to eliminate malicious content before entering the system.

    Agent Updates and Management

    • Updating agents in host-based IDPSs can be unique due to the coordination between systems, ensuring compatibility and functionality.
    • Management is crucial for overseeing the deployment, configuration, and incident response efforts pertaining to the host-based IDPS.

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    Related Documents

    LEC 9.pptx

    Description

    This quiz covers the components and architecture of host-based intrusion detection systems, including their capabilities, taxonomy of anomaly detection, and management. It also explores the characteristics of a single host and events within that host for suspicious activity.

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