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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.
The latter case where the user is redirected to another destination would be considered DNS Spoofing, otherwise known as "DNS Poisoning". [3] DNS blocking can be applied to individual servers/IP address, or entire blocks of IP addresses for multiple reasons. Some public DNS Resolvers, like Quad9 and CleanBrowsing, offer filters are part of ...
Domain hijacking is analogous with theft, in that the original owner is deprived of the benefits of the domain, but theft traditionally relates to concrete goods such as jewelry and electronics, whereas domain name ownership is stored only in the digital state of the domain name registry, a network of computers.
At least two of the root servers (G-ROOT and L-ROOT) reportedly "suffered badly" while two others (F-ROOT and M-ROOT) "experienced heavy traffic". The latter two servers largely mitigated the damage by distributing requests to other root server instances with anycast addressing. ICANN published a formal analysis shortly after the event. [3]
The difference is that all server status codes can only be set and removed by the registry, while the client status codes can also be set and removed by the registrar unless a server status code prohibits it. [15] The server status codes are commonly used to handle domain abuse cases, mark the domain lifecycle stage, or offer extra security ...
A Domain Name System blocklist, Domain Name System-based blackhole list, Domain Name System blacklist (DNSBL) or real-time blackhole list (RBL) is a service for operation of mail servers to perform a check via a Domain Name System (DNS) query whether a sending host's IP address is blacklisted for email spam. [1]
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.
Generally, the *only* way NXDOMAIN hijacking can disable local networking is if the LAN isn't configured properly--most commonly if an external DNS server is hard-coded into the LAN client AHEAD of (or in place of) the home router's DNS server--and then only if the client looks for other LAN clients using DNS.