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Questions and Answers
Which attack involves changing DNS records on a DNS server or DNS cache server to redirect network traffic from a legitimate web server to a malicious website?
Which attack involves changing DNS records on a DNS server or DNS cache server to redirect network traffic from a legitimate web server to a malicious website?
Which attack aims to overload the network with a high volume of traffic in order to exhaust computer resources?
Which attack aims to overload the network with a high volume of traffic in order to exhaust computer resources?
Which protocol is vulnerable to IP Spoofing attack and Fragmentation attack?
Which protocol is vulnerable to IP Spoofing attack and Fragmentation attack?
Which attack aims to modify data or create a false stream, such as masquerade, replay, modification of messages, man-in-the-middle (MITM), and DoS/DDoS?
Which attack aims to modify data or create a false stream, such as masquerade, replay, modification of messages, man-in-the-middle (MITM), and DoS/DDoS?
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Which attack attempts to learn or make use of information from the system but does not affect system resources?
Which attack attempts to learn or make use of information from the system but does not affect system resources?
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Which attack involves changing DNS records on a DNS server or DNS cache server to redirect network traffic from a legitimate web server to a malicious website?
Which attack involves changing DNS records on a DNS server or DNS cache server to redirect network traffic from a legitimate web server to a malicious website?
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Which attack aims to overload the network with a high volume of traffic in order to exhaust computer resources?
Which attack aims to overload the network with a high volume of traffic in order to exhaust computer resources?
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Which protocol is vulnerable to IP Spoofing attack and Fragmentation attack?
Which protocol is vulnerable to IP Spoofing attack and Fragmentation attack?
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Which attack aims to modify data or create a false stream, such as masquerade, replay, modification of messages, man-in-the-middle (MITM), and DoS/DDoS?
Which attack aims to modify data or create a false stream, such as masquerade, replay, modification of messages, man-in-the-middle (MITM), and DoS/DDoS?
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Which attack attempts to learn or make use of information from the system but does not affect system resources?
Which attack attempts to learn or make use of information from the system but does not affect system resources?
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Which of the following best describes the purpose of DNS?
Which of the following best describes the purpose of DNS?
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What is DNS commonly used for?
What is DNS commonly used for?
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What type of response is resolved from the authoritative DNS server for the queried domain name?
What type of response is resolved from the authoritative DNS server for the queried domain name?
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When using a PC from QUT's computer lab and entering http://library.qut.edu.au in the web browser, which DNS server does the DNS client service contact?
When using a PC from QUT's computer lab and entering http://library.qut.edu.au in the web browser, which DNS server does the DNS client service contact?
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What is the purpose of caching query results on the local DNS server?
What is the purpose of caching query results on the local DNS server?
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Which server does the DNS client query when trying to resolve a domain name with the .com top-level domain?
Which server does the DNS client query when trying to resolve a domain name with the .com top-level domain?
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What does the DNS client receive when the query is resolved from the authoritative DNS server?
What does the DNS client receive when the query is resolved from the authoritative DNS server?
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What is the purpose of the DNS zone?
What is the purpose of the DNS zone?
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Which of the following is a vulnerability/threat in the DNS scheme?
Which of the following is a vulnerability/threat in the DNS scheme?
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Which protocol is vulnerable to IP Spoofing attack and Fragmentation attack?
Which protocol is vulnerable to IP Spoofing attack and Fragmentation attack?
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Study Notes
Types of Cyber Attacks
- DNS Spoofing involves altering DNS records on a server or cache to divert traffic from a legitimate site to a malicious one.
- Denial of Service (DoS) and Distributed Denial of Service (DDoS) attacks aim to overwhelm networks with excessive traffic, draining resources and disrupting services.
- Protocols susceptible to IP Spoofing and Fragmentation attacks include various network protocols, particularly those that handle packets without proper source validation.
- Data Modification Attacks encompass activities like masquerading, replaying messages, altering data, man-in-the-middle (MITM) methods, and DoS/DDoS strategies, all aimed at falsifying data streams.
- Information Gathering Attacks seek to extract useful information from systems without impacting resource availability.
Domain Name System (DNS) Overview
- The primary purpose of DNS is to translate user-friendly domain names into IP addresses, enabling user access to online content.
- DNS is commonly utilized for resolving domain names into their respective IP addresses for web services.
- An authoritative DNS server provides comprehensive answers for queries related to its specific domain, returning resolved response data.
- When accessing a URL, such as
http://library.qut.edu.au, the DNS client contacts the local DNS server or the one assigned by the network. - Caching query results on local DNS servers improves efficiency by storing previous responses, reducing resolution time for repeated queries.
- Queries for domain names under the
.comtop-level domain are typically resolved by the DNS client querying the central root DNS servers and subsequently reaching the authoritative server for.com. - Upon resolution from the authoritative DNS server, the DNS client receives the corresponding IP address for the queried domain.
- DNS zones serve as distinct sections within the DNS namespace, allowing for the management of DNS records and delegation of authority over subdomains.
DNS Vulnerabilities
- The DNS system is susceptible to various threats and vulnerabilities, such as cache poisoning and DNS spoofing attacks.
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Description
Test your knowledge on DNS (Domain Name System) and its role in converting human readable names into IP addresses on a network. Learn how DNS functions as a directory service, similar to a phone book, and allows users to use computer names instead of IP addresses. Explore the applications that rely on DNS for name-to-address resolution.
