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DNS zone transfer, also sometimes known by the inducing DNS query type AXFR, is a type of DNS transaction. It is one of the many mechanisms available for administrators to replicate DNS databases across a set of DNS servers .
DNS hijacking, DNS poisoning, or DNS redirection is the practice of subverting the resolution of Domain Name System (DNS) queries. [1] This can be achieved by malware that overrides a computer's TCP/IP configuration to point at a rogue DNS server under the control of an attacker, or through modifying the behaviour of a trusted DNS server so that it does not comply with internet standards.
Other standards (not DNSSEC) are used to secure bulk data (such as a DNS zone transfer) sent between DNS servers. As documented in RFC 4367, some users and developers make false assumptions about DNS names, such as assuming that a company's common name plus ".com" is always its domain name. DNSSEC cannot protect against false assumptions; it ...
In reality, there are no denial of service issues specific to zone maintenance traffic in any up-to-date DNS server (although older servers that have many other far more serious vulnerabilities do still exist) because functionally equivalent DOS and DDOS attacks can be performed with normal DNS queries without recourse to AXFR.
RFC 1995 – Incremental Zone Transfer in DNS, Proposed Standard. RFC 1996 – A Mechanism for Prompt Notification of Zone Changes (DNS NOTIFY), Proposed Standard. RFC 2136 – Dynamic Updates in the Domain Name System (DNS UPDATE), Proposed Standard. RFC 2181 – Clarifications to the DNS Specification, Proposed Standard.
DNS spoofing, also referred to as DNS cache poisoning, is a form of computer security hacking in which corrupt Domain Name System data is introduced into the DNS resolver's cache, causing the name server to return an incorrect result record, e.g. an IP address. This results in traffic being diverted to any computer that the attacker chooses.
DNS over TLS (DoT) is a network security protocol for encrypting and wrapping Domain Name System (DNS) queries and answers via the Transport Layer Security (TLS) protocol. The goal of the method is to increase user privacy and security by preventing eavesdropping and manipulation of DNS data via man-in-the-middle attacks .
DNS response modification under policy restrictions. A response policy zone (RPZ) is a mechanism to introduce a customized policy in Domain Name System servers, so that recursive resolvers return possibly modified results. By modifying a result, access to the corresponding host can be blocked.
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