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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.
Domain Name System blocklist. 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]
The Abusive Hosts Blocking List. The Abusive Hosts Blocking List ( AHBL) was an internet abuse tracking and filtering system developed by The Summit Open Source Development Group, and based on the original Summit Blocking List (2000–2002). Its DNSBLs were shut down on Jan 1, 2015 and now appear to be blacklisting the entire Internet.
The Spam and Open Relay Blocking System. SORBS (" Spam and Open Relay Blocking System ") was a list of e-mail servers suspected of sending or relaying spam (a DNS Blackhole List). It had been augmented with complementary lists that include various other classes of hosts, allowing for customized email rejection by its users.
DNS blocking. Domain Name System blocking, or DNS blocking / filtering, is a strategy for making it difficult for users to locate specific domains or websites on the Internet. It was first introduced in 1997 as a means to block spam email from known malicious IP addresses. [1]
DNS sinkhole. A DNS sinkhole, also known as a sinkhole server, Internet sinkhole, or Blackhole DNS[1] is a Domain Name System (DNS) server that has been configured to hand out non-routable addresses for a certain set of domain names. Computers that use the sinkhole fail to access the real site. [2] The higher up the DNS resolution chain the ...
Not Just Another Bogus List (NJABL) was a DNS blacklist . NJABL maintained a list of known and potential spam sources ( open mail relays, open proxies, open form to mail HTTP gateways, dynamic IP pools, and direct spammers) for the purpose of being able to tag or refuse e-mail and thereby block spam from certain sources.
Distributed Sender Blackhole List. The Distributed Sender Blackhole List was a Domain Name System-based Blackhole List that listed IP addresses of insecure e-mail hosts. DSBL could be used by server administrators to tag or block e-mail messages that came from insecure servers, which is often spam. [1]