DNSSEC Implementation Quiz

A logical grouping of domain names within the DNS name tree.

A hierarchical structure used to organize domain names on the internet. It consists of a tree-like system with nodes representing domain names.

Servers responsible for providing authoritative information about domain names within a specific zone of authority.

A specific type of DNS data that stores information about a resource, such as an IP address associated with a domain name.

Records stored at each node in the DNS name tree, containing information about the domain name and its associated resources.

A dedicated server that manages and provides information for the root zone of the DNS name tree.

The process of transferring information between zones of authority, ensuring consistent data and enabling communication between different parts of the DNS system.

A DNS name server that provides a copy of the data from a primary server, acting as a backup and ensuring reliability.

A DNS RR that specifies the name of the authoritative DNS name server for a particular zone.

A DNS RR that contains a 32-bit IP address. Used for resolving domain names to IP addresses.

A DNS RR that specifies the location (device or server) responsible for handling emails.

The process of finding the IP address associated with a domain name.

A DNS resolution method where the requesting server checks the DNS hierarchy one step at a time until the answer is found.

A DNS resolution method where a specific server handles the entire resolution process, starting from the root.

A type of resolution where a domain name is determined from an IP address - the opposite of standard name resolution.

A type of resolution where the recipient's email server is determined from the email address.

The process of arranging DNS names hierarchically according to their labels, treating uppercase letters as lowercase, with the rightmost label being sorted first and continuing towards the left for identical labels. This ensures consistent ordering for DNS operations.

A protocol error occurs when a DNS server encounters duplicate Resource Records (RRs) within a set while attempting to organize them in canonical order. It forces the server to either treat this as a protocol error or delete duplicate records for accurate calculations.

A method for arranging Resource Records (RRs) with the same owner name, class, and type. It treats the RDATA portion as an unsigned octet sequence, prioritizing absence of octets over zero values. Duplicate RRs are handled as protocol errors or removed for error correction.

A left-justified unsigned octet sequence without any values for non-existent octets, used for sorting purposes. This is a way to represent DNS data in a standard format for efficient comparison and ordering.

A collection of DNS Resource Records (RRs) related to the same domain name, class, and type. This set of records is sorted according to the canonical RDATA ordering for consistency and accuracy.

DNSsec is an extension of DNS that adds data origin authentication and data integrity protection. This means that a resolver can verify the source of the data and ensure it hasn't been tampered with.

DNS vulnerabilities like DNS snooping, DNS ID hacking, and DNS cache poisoning exploit DNS's lack of security, allowing attackers to intercept or manipulate DNS data.

RRSIG (RR Signature) stores a digital signature for a set of resource records, allowing verification of their authenticity and origin.

DNSKEY (DNS public KEY) stores the public key used to verify the digital signature on RRSIG records.

NSEC/NSEC3 (Next SECure) records are used to prove that a specific resource record does not exist. They help prevent attackers from creating fake records.

DS (Delegation Signer) records store a cryptographic hash of a public key that is used to verify a zone's signature. It acts as a reference for delegation.

DNSsec uses four new types of Resource Records (RRs) to ensure data authentication and integrity: RRSIG, DNSKEY, NSEC, and DS.

After Bellovin's paper exposed serious DNS vulnerabilities, the need for DNSsec (DNS Security Extensions) became critical.

A DNSKEY RR that verifies the DNSKEY RRs for a zone and is used to sign the zone.

A DNSKEY RR that validates a specific DNSKEY RR in a parent zone.

A resource record (RR) that contains information about a DNSKEY RR. It includes the key tag, algorithm, and digest type, which are used to verify the DNSKEY RR.

A resource record (RR) that allows for a zone to be signed. Containing information about the zone's public key, such as the key tag, algorithm, and public key digest. It also includes a signature.

A resource record (RR) that validates a specific resource record (RR) within a zone. It contains information about the key used to sign the resource record, the algorithm used, and a signature.

A resource record (RR) that describes the domain name and its associated resources, and is associated with the zone's DNSKEY RR to ensure authenticity.

A process that involves including DNSKEY RRs, RRSIG RRs, NSEC RRs, and optionally DS RRs in a zone to ensure authenticity and integrity.

A process of verifying if data contained within a zone is authentic and intact.

A DNS record that indicates the existence of a particular domain. It ensures that a specific domain name is not used for fraudulent or unauthorized purposes.

A technique that exploits the NSEC record to list all domain names in a zone. This can be used for spamming or obtaining registry information.

A response from a DNS server that verifies the information received is authentic.

A security standard for DNS, allowing for the verification of DNS data and the prevention of spoofing.

A record type in DNS that provides a digital signature for a specific domain. This confirms the integrity of the domain's data.

A security enhancement for DNS that addresses zone enumeration vulnerabilities and improves the efficiency of delegation.

A record type that lists all the domain names in a zone, sorted alphabetically. It's used for security purposes.

The process of transferring information from a parent zone to a child zone. This ensures that DNS servers know how to reach a specific domain.