Network Security Concepts Quiz
40 Questions
3 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What term describes a weakness in a system that could be exploited?

  • Vulnerability (correct)
  • Threat
  • Mitigation
  • Risk

    • Which of the following is NOT identified as a vector for data loss?

  • Improper Access Controls
  • Encrypted Devices (correct)
  • Removable Media
  • Email/Webmail

    • What is the general term for actions taken to reduce the negative impact of a threat?

  • Mitigation (correct)
  • Vulnerability
  • Risk
  • Threat

    • Which of the following is a driver for network security?

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

    What term best describes the potential for a threat to exploit a vulnerability?

    <p>Risk (A)</p> Signup and view all the answers

    What type of network is typically used in a small office or home setting?

    <p>Small Office and Home Office Network (C)</p> Signup and view all the answers

    Which of the listed items is considered a measure of inside perimeter security?

    <p>Electronic motion detectors (D)</p> Signup and view all the answers

    Which of these is considered a motivation for Hacktivists?

    <p>Political or Social Agenda (D)</p> Signup and view all the answers

    Which of these is NOT typically a security measure aimed at the outside perimeter?

    <p>Electronic motion detectors (A)</p> Signup and view all the answers

    What is the term used for individuals who exploit known weaknesses in software or hardware?

    <p>Vulnerability Brokers (A)</p> Signup and view all the answers

    Which of the following is NOT typically considered a penetration testing tool?

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

    Which tool is used to find flaws in a system by sending invalid or unexpected input?

    <p>Fuzzer (A)</p> Signup and view all the answers

    What term describes intercepting network traffic to gain unauthorized information?

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

    Which of these is a type of network attack where the attacker pretends to be someone else?

    <p>IP address spoofing (B)</p> Signup and view all the answers

    Which of these is NOT a classification of a Trojan Horse?

    <p>Encryption (A)</p> Signup and view all the answers

    Which of these tools would be used to analyze the contents of network communications?

    <p>Packet sniffer (A)</p> Signup and view all the answers

    What is the primary purpose of a 'security software disabler' Trojan?

    <p>To disable security applications (B)</p> Signup and view all the answers

    Which term refers to a type of attack that aims to disrupt access to network resources?

    <p>Denial-of-service (C)</p> Signup and view all the answers

    What is a 'packet crafting' tool primarily used for?

    <p>Creating custom network packets (C)</p> Signup and view all the answers

    Which attack involves an attacker positioning themselves between two communicating parties?

    <p>Man-in-the-middle (D)</p> Signup and view all the answers

    The use of fences and gates is classified as an inside perimeter security measure.

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

    A Script Kiddie is a type of modern hacking title that refers to highly skilled hackers with advanced programming and network knowledge.

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

    The term 'mitigation' refers to the potential for a threat to exploit a vulnerability.

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

    Cyber criminals are primarily motivated by their political views and use their hacking skills to promote a specific social agenda.

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

    On-premise security officers are part of inside perimeter security.

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

    Unencrypted digital devices are not considered a vector of data loss.

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

    Vulnerability Brokers focus on creating new viruses and worms to distribute to a wide range of systems.

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

    A 'vulnerability' describes an action intended to disrupt the availability of a host or service.

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

    Risk is a measure of the likelihood of a potential threat agent to exploit a mitigation.

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

    The term 'threat' refers to a weakness that can be taken advantage of in a system.

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

    A 'rootkit detector' is primarily used to identify network vulnerabilities.

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

    Eavesdropping is classified as a type of malware attack.

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

    A 'proxy' Trojan horse is primarily used to send spam emails from infected systems.

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

    Data modification attacks involve an attacker gaining control of a system via exploiting software.

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

    Using packet sniffers, attackers can manipulate network packets in transit.

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

    A 'DoS' trojan is designed to disrupt the operations of network services.

    <p>True (A)</p> Signup and view all the answers

    IP address spoofing is a form of malware that disguises itself as a legitimate application.

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

    Vulnerability exploitation tools are used to perform forensic analysis of infected systems.

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

    Compromised-key attacks involve an attacker stealing encryption keys, not exploiting software vulnerabilities.

    <p>True (A)</p> Signup and view all the answers

    Debuggers are a type of malware used in network attacks.

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

    Flashcards

    Vulnerability

    A weakness in a system, network, or device that can be exploited by an attacker.

    Threat

    Any potential danger that could exploit a vulnerability, leading to harm or loss.

    Mitigation

    A technique, strategy, or action used to address and reduce the impact of a threat.

    Risk

    The likelihood of a threat exploiting a vulnerability and causing harm.

    Signup and view all the flashcards

    Vectors of Network Attacks

    The ways in which attackers target a network or system.

    Signup and view all the flashcards

    Script Kiddies

    Individuals with limited technical skills who use pre-made hacking tools to exploit vulnerabilities.

    Signup and view all the flashcards

    Vulnerability Brokers

    People who discover and report vulnerabilities to organizations but may also sell them to attackers.

    Signup and view all the flashcards

    Hacktivists

    Hackers motivated by political or social causes to disrupt or damage systems for ideological reasons.

    Signup and view all the flashcards

    Cyber Criminals

    Individuals or groups motivated by financial gain, committing cybercrimes like data theft, ransomware, or fraud.

    Signup and view all the flashcards

    State-Sponsored Hackers

    Hackers backed by a government for espionage, sabotage, or political influence through cyberattacks.

    Signup and view all the flashcards

    Penetration Testing Tools

    A tool used to test the security of a system or network by simulating real-world attacks to identify vulnerabilities.

    Signup and view all the flashcards

    Exploit

    A software program designed to exploit vulnerabilities in a system, often for malicious purposes.

    Signup and view all the flashcards

    Virus

    A type of malware that replicates by attaching itself to other programs or files.

    Signup and view all the flashcards

    Trojan Horse

    A program disguised as legitimate software that performs malicious actions when executed.

    Signup and view all the flashcards

    Packet Sniffer

    A program designed to monitor network traffic and capture packets, potentially revealing sensitive information.

    Signup and view all the flashcards

    Data Modification

    A technique used to alter or manipulate data transmitted over a network, often with malicious intent.

    Signup and view all the flashcards

    Denial-of-Service (DoS)

    An attack that aims to disrupt the normal functioning of a system by overwhelming it with traffic, preventing legitimate users from accessing it.

    Signup and view all the flashcards

    Worm

    A type of malware that spreads through networks, taking control of infected systems and forming a botnet.

    Signup and view all the flashcards

    IP Address Spoofing

    A technique used to create fake network traffic, disguising the attacker's real identity and location.

    Signup and view all the flashcards

    Man-in-the-Middle Attack

    A type of attack where the attacker intercepts communications between two parties, potentially stealing data or manipulating information.

    Signup and view all the flashcards

    Why are networks targets?

    Attackers target networks for various reasons, including stealing data, disrupting operations, or gaining control.

    Signup and view all the flashcards

    What are the key network security terms?

    Vulnerability: A weakness in a system that can be exploited. Threat: Any potential danger that could exploit a vulnerability. Mitigation: Actions to reduce the impact of a threat. Risk: The likelihood of a threat exploiting a vulnerability.

    Signup and view all the flashcards

    What are the main vectors of data loss?

    Email/Webmail: Compromised accounts or phishing emails. Unencrypted Devices: Laptops, phones without passwords. Cloud Storage: Weak access controls. Removable Media: USB sticks with sensitive data. Hard Copy: Misplaced documents. Improper Access Control: Weak logins or shared passwords.

    Signup and view all the flashcards

    Why do all networks need security?

    Networks are interconnected, so an attack on one network could affect others. All network types need protection, from small home networks to large enterprise networks.

    Signup and view all the flashcards

    What are the goals of network attackers?

    Attackers often target network vulnerabilities to gain unauthorized access, steal data, or disrupt services.

    Signup and view all the flashcards

    Security Software Disabler Trojan

    A type of Trojan horse designed to disable security software on a system, making it vulnerable to other attacks by bypassing security measures.

    Signup and view all the flashcards

    Study Notes

    Modern Network Security Threats

    • This chapter outlines modern network security threats
    • Course name: CCNA Security v2.0
    • Instructor: Dr. Nadhir Ben Halima

    Chapter Outline

    • Introduction to network security concepts
    • Network security threats
    • Methods for mitigating threats
    • Summary of key concepts

    Securing Networks

    • Upon section completion:
      • Students can describe the current network security landscape
      • Students can explain the need for protection of all network types

    Current State of Affairs

    • Networks are common targets for attacks
    • Different locations and countries are affected

    Drivers for Network Security

    • Common network security terms:
      • Threat
      • Vulnerability
      • Mitigation
      • Risk

    Vectors of Network Attacks

    • External threats attack networks from the outside
    • Internal threats attack networks from the inside
    • Hosts are often the target

    Data Loss

    • Vectors of data loss include:
      • Email/Webmail
      • Unencrypted devices
      • Cloud storage devices
      • Removable media
      • Hard copy
      • Improper access control

    Network Topology Overview

    • Different types of networked systems are common security targets

    Campus Area Networks

    • AAA Server, ASA Firewall, Layer 2/3 Switches, VPN, IPS, ESA/WSA are components of modern networks

    Small Office and Home Office Networks

    • A wireless router, layer 2 switch, and client devices are example components

    Wide Area Networks

    • Components include branch sites, points of presence (POP), VPNs, regional sites, corporate sites, and mobile workers

    Data Center Networks

    • Outside perimeter security:
      • On-premise security officers
      • Fences and gates
      • Continuous video surveillance
      • Security breach alarms
    • Inside perimeter security:
      • Electronic motion detectors
      • Security traps
      • Continuous video surveillance
      • Biometric access sensors

    Network Threats

    • Evolution of network security
    • Hackers' attack tools
    • Different types of malware (viruses, worms, Trojans)

    Who is Hacking Our Networks?

    • Modern hacking titles include:
      • Script Kiddies
      • Vulnerability Brokers
      • Hacktivists
      • Cyber Criminals
      • State-Sponsored Hackers

    Hacker Tools

    • A discussion of the types of tools hackers use.
    • Increasing sophistication and technical knowledge required.

    Introduction of Attack Tools

    • Attack sophistication and technical knowledge needed have increased

    Evolution of Security Tools

    • Penetration testing tools:
      • Password crackers
      • Wireless hacking
      • Network scanning
    • Forensic tools:
      • Debuggers
      • Hacking operating systems
      • Encryption
    • Security tools:
      • Packet sniffers
      • Rootkit detectors
      • Vulnerability scanners
      • Fuzzers to search for vulnerabilities

    Categories of Attack Tools

    • Network Hacking Attacks:
      • Eavesdropping
      • Data modification
      • IP address spoofing
      • Denial-of-service (DoS)
      • Man-in-the-middle
      • Compromised-key
      • Sniffer

    Malware

    • Various types of malware
    • Virus: specific function on a computer
    • Worm: replicates and spreads across a network
    • Trojan Horse: disguised as legitimate software or file

    Viruses

    • Malicious software often harmful

    Trojan Horse Classification (Examples)

    • Security software disabler
    • Remote access
    • Data-sending
    • Destructive
    • Proxy
    • FTP
    • Denial-of-service (DoS)

    Worms

    • The initial infection and propagation of a worm illustrates attacks
    • Examples like the Code Red worm: highlighted infection spread

    Worm Components

    • Enabling vulnerability
    • Propagation mechanism
    • Payload

    Other Malware

    • Other types of malware are
      • Ransomware
      • Spyware
      • Adware
      • Scareware
      • Phishing
      • Rootkits

    Common Network Attacks

    • Types of network attacks include:
      • SYN floods
      • Smurf attacks
      • Data modification
      • Reconnaissance attacks (initial queries, ping sweeps, port scans, vulnerability scans, exploitation tools)
      • Denial-of-service (DoS) attacks (and Distributed Denial-of-Service (DDoS) attacks)

    Reconnaissance Attacks

    • Initial query of a target network
    • Ping sweep of the target network
    • Port scan of active IP addresses
    • Vulnerability scanners
    • Exploitation tools

    Access Attacks

    • Reasons for access attacks:
      • Retrieving data
      • Gaining access
      • Escalating access privileges
    • Types of access attacks
      • Password attacks
      • Port redirection
      • Man-in-the-middle attacks
      • Buffer overflow attacks
      • IP, MAC, DHCP spoofing

    Social Engineering Attacks

    • Pretexting
    • Phishing
    • Spearphishing
    • Spam
    • Tailgating
    • Something for Something

    Denial of Service Attacks

    • The DDoS Attacker technique and effect of denial of service attacks to the client
    • Websites and servers experience overload due to pings
    • A DoS Attacker overload network servers with requests to block access

    DDoS Attacks

    • Hacker builds a botnet of infected machines
    • Zombies, or compromised computers, are controlled by systems
    • Further attacks on more targets infect more zombies
    • DDoS attacks carried out when attacks are initiated.
    • Emphasis on botnets and zombies as essential components

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Related Documents

    CCNA Security v2.0 Chapter 1: Modern Network Security Threats PDF

    Description

    Test your knowledge on key concepts related to network security. This quiz covers various terms, measures, and motivations related to data protection and system vulnerabilities. Challenge yourself to identify correct terminology and security strategies in a networked environment.

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser