Podcast
Questions and Answers
Which of the following is NOT categorized as a network hacking attack?
Which of the following is NOT categorized as a network hacking attack?
- Eavesdropping
- Denial-of-service
- Firewall breach (correct)
- Data modification
What type of malware is specifically designed to allow remote access to an infected system?
What type of malware is specifically designed to allow remote access to an infected system?
- Rabid worm
- Adware
- Virus
- Trojan horse (correct)
Which component of a worm is responsible for its ability to spread between systems?
Which component of a worm is responsible for its ability to spread between systems?
- Payload
- Propagation mechanism (correct)
- Enabling vulnerability
- Dormant phase
Which classification of a Trojan horse is designed to disable security software?
Which classification of a Trojan horse is designed to disable security software?
What is a primary purpose of a sniffer in network attacks?
What is a primary purpose of a sniffer in network attacks?
Which of the following is classified as a modern hacking title?
Which of the following is classified as a modern hacking title?
What type of security tool is used primarily to detect and analyze vulnerabilities in networks?
What type of security tool is used primarily to detect and analyze vulnerabilities in networks?
Which of the following is NOT an example of outside perimeter security?
Which of the following is NOT an example of outside perimeter security?
Which type of hacker is typically motivated by political or social agendas?
Which type of hacker is typically motivated by political or social agendas?
What does the term 'vulnerability' refer to in network security?
What does the term 'vulnerability' refer to in network security?
Which of the following tools is used for penetration testing by simulating attacks on a network?
Which of the following tools is used for penetration testing by simulating attacks on a network?
Which of the following is NOT a vector of data loss?
Which of the following is NOT a vector of data loss?
What is the primary focus when mitigating network threats?
What is the primary focus when mitigating network threats?
Which network topology is specifically designed for improved communication in constrained local environments?
Which network topology is specifically designed for improved communication in constrained local environments?
In the context of network security, what does 'risk' typically refer to?
In the context of network security, what does 'risk' typically refer to?
What is the primary purpose of encryption in network security?
What is the primary purpose of encryption in network security?
Which of the following is NOT a component of the CIA triad in network security?
Which of the following is NOT a component of the CIA triad in network security?
How does hashing contribute to network security?
How does hashing contribute to network security?
What is one of the main roles of network security professionals?
What is one of the main roles of network security professionals?
What is the significance of the Cisco SecureX Architecture in network security?
What is the significance of the Cisco SecureX Architecture in network security?
Biometric access and exit sensors are used in outside perimeter security.
Biometric access and exit sensors are used in outside perimeter security.
Vulnerability brokers are hackers who specialize in identifying and exploiting security flaws in systems.
Vulnerability brokers are hackers who specialize in identifying and exploiting security flaws in systems.
Password crackers are used for penetration testing, but not forensic analysis.
Password crackers are used for penetration testing, but not forensic analysis.
Fuzzers are tools specifically designed to search for vulnerabilities in network operating systems only.
Fuzzers are tools specifically designed to search for vulnerabilities in network operating systems only.
Modern hacking titles typically include "Script Kiddies" and "Vulnerability Brokers".
Modern hacking titles typically include "Script Kiddies" and "Vulnerability Brokers".
A "Threat" in network security refers to any potential danger which can exploit a vulnerability to cause harm.
A "Threat" in network security refers to any potential danger which can exploit a vulnerability to cause harm.
Data loss through unencrypted devices only applies to personal devices like phones and laptops.
Data loss through unencrypted devices only applies to personal devices like phones and laptops.
A "Campus Area Network" is a type of network designed for a limited geographical area, like a school or office building.
A "Campus Area Network" is a type of network designed for a limited geographical area, like a school or office building.
Wide Area Networks use specialized networking technologies like VPNs to connect geographically dispersed locations and extend a network over a much larger area.
Wide Area Networks use specialized networking technologies like VPNs to connect geographically dispersed locations and extend a network over a much larger area.
A "vulnerability" is a weakness in a system's security that an attacker can exploit to gain unauthorized access.
A "vulnerability" is a weakness in a system's security that an attacker can exploit to gain unauthorized access.
A "Smurf Attack" is classified as a Denial of Service attack.
A "Smurf Attack" is classified as a Denial of Service attack.
A 'Sniffer' is a type of malware.
A 'Sniffer' is a type of malware.
Social Engineering attacks primarily focus on exploiting vulnerabilities in computer systems.
Social Engineering attacks primarily focus on exploiting vulnerabilities in computer systems.
The Code Red worm's propagation mechanism involved a Denial-of-Service (DoS) attack.
The Code Red worm's propagation mechanism involved a Denial-of-Service (DoS) attack.
Buffer Overflow attacks fall under the category of Access Attacks.
Buffer Overflow attacks fall under the category of Access Attacks.
The 'Data-sending' classification of Trojan horses is specifically designed to disable security software.
The 'Data-sending' classification of Trojan horses is specifically designed to disable security software.
A 'Trojan Horse' is a type of network hacking attack.
A 'Trojan Horse' is a type of network hacking attack.
A "Ping Sweep" is a common technique used in Reconnaissance attacks.
A "Ping Sweep" is a common technique used in Reconnaissance attacks.
The term "Zombies" refers to compromised computers controlled by hackers within a botnet.
The term "Zombies" refers to compromised computers controlled by hackers within a botnet.
The Code Red worm's initial infection involved exploiting a vulnerability in a web server.
The Code Red worm's initial infection involved exploiting a vulnerability in a web server.
Flashcards
DDoS Attack
DDoS Attack
Distributed Denial of Service attack; overwhelms a target with traffic.
CIA Triad
CIA Triad
A model for information security: Confidentiality, Integrity, Availability.
Confidentiality
Confidentiality
Ensures data privacy through encryption.
Integrity
Integrity
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Availability
Availability
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Network Security
Network Security
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Threat
Threat
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Vulnerability
Vulnerability
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Mitigation
Mitigation
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Data Loss Vectors
Data Loss Vectors
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Eavesdropping
Eavesdropping
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Denial-of-service
Denial-of-service
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Trojan Horse
Trojan Horse
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Worm
Worm
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Payload
Payload
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Perimeter Security
Perimeter Security
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Types of Hackers
Types of Hackers
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Malware
Malware
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Penetration Testing Tools
Penetration Testing Tools
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Network Attacks
Network Attacks
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Denial-of-Service (DoS)
Denial-of-Service (DoS)
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Ransomware
Ransomware
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Reconnaissance Attacks
Reconnaissance Attacks
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Access Attacks
Access Attacks
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Social Engineering Attacks
Social Engineering Attacks
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Network Security Landscape
Network Security Landscape
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Vectors of Network Attacks
Vectors of Network Attacks
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Data Loss
Data Loss
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Mitigation Strategies
Mitigation Strategies
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Common Network Threats
Common Network Threats
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Inside Perimeter Security
Inside Perimeter Security
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Modern Hacking Titles
Modern Hacking Titles
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Attack Tools
Attack Tools
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Types of Network Attacks
Types of Network Attacks
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Study Notes
Modern Network Security Threats
- Course: CCNA Security v2.0
- Instructor: Dr. Nadhir Ben Halima
- Topic: Modern network security threats
- Outline:
- Introduction
- Securing Networks
- Network Threats
- Mitigating Threats
- Summary
Securing Networks
- Learning Objectives:
- Describe the current network security landscape.
- Explain how all types of networks need to be protected.
- Explain different network topologies.
Network Threats
- Evolution of Network Security: Detailed analysis needed.
- Hacker Tools:
- Script Kiddies
- Vulnerability Brokers
- Hacktivists
- Cyber Criminals
- State-Sponsored Hackers
- Hacker Tools:
- Penetration testing.
- Password crackers.
- Wireless Hacking.
- Network Scanning.
- Packet Crafting.
- Packet Sniffers.
- Rootkit detectors
- Fuzzers to search vulnerabilities.
- Forensic.
- Debuggers.
- Hacking operating systems
- Encryption
- Vulnerability exploitation
- Vulnerability scanners
- Network Hacking Attacks:
- Eavesdropping.
- Data modification.
- IP address spoofing.
- Denial-of-service.
- Man-in-the-middle.
- Compromised-key.
- Sniffer
Malware
- Types of Malware:
- Viruses (malicious software with a specific function).
- Worms (executes arbitrary code, installs copies and spreads automatically through networks).
- Trojan horses (non-self-replicating malware, disguised as legitimate software).
- Worm Components: Enabling vulnerability, propagation mechanism (spreading across networks), Payload (the malicious code).
Common Network Attacks
- Types of Attacks:
- Reconnaissance (initial query of target, ping sweep, port scan, vulnerability scanners, exploitation tools).
- Access (retrieve data, gain access, escalate privileges, password, port redirection, man-in-the-middle, buffer overflow, IP, MAC, DHCP spoofing).
- Social Engineering (pretexting, phishing, spearphishing, spam, tailgating, something for something).
- Denial of Service (DoS) (overloading the server with requests).
- Distributed Denial of Service (DDoS) (botnet controlled by attackers overwhelming the target).
- Data Modification (altering data).
Mitigating Security Threats
- Methods & Resources: strategies for network protection and security protocols.
- Domains of Network Security: Risk assessment, security policy, organization of information security, asset management, human resources security, physical and environmental security, communications and operations management, security incident management, business continuity planning, compliance.
- Network Topologies:
- Campus Area Networks
- Small Office / Home Office Networks
- Wide Area Networks
- Data Center Networks
- Cisco SecureX Architecture: a framework for mitigating network incidents.
- Security Practices:Â Security policy development, employee education on social engineering risks, validate identities, control physical access, strong passwords, encrypt sensitive data, implement security hardware/software, backups, shut down services, patches, vulnerability testing.
- Mitigating common threats: malware, worms, reconnaissance attacks, access attacks, and DoS attacks.
- Specific Mitigation techniques for each threat type are listed in the notes. (e.g, ACLs, Antispoofing, Layer 2 security, DHCP snooping, firewalls)
Summary
- Objectives: Explain network security, describe attack variations (reconnaissance, access, social, DoS, DDoS etc), explain ways to mitigate and contain network attacks and malware, and explain the components of the Cisco Network Foundation Protection Framework (NFP).
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