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A Canonical Name (CNAME) record is a type of resource record in the Domain Name System (DNS) that maps one domain name (an alias) to another (the canonical name). [1]This can prove convenient when running multiple services (like an FTP server and a web server, each running on different ports) from a single IP address.
RFC 1035 [1] PTR Resource Record Pointer to a canonical name. Unlike a CNAME, DNS processing stops and just the name is returned. The most common use is for implementing reverse DNS lookups, but other uses include such things as DNS-SD.
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.
An ISP redirect page is a spoof page served by major ISPs including: Cox Communications, [1] Embarq, Verizon, Rogers, Earthlink, and various others when World Wide Web users enter an invalid DNS name. [citation needed]
A DNS name server is a server that stores the DNS records for a domain; a DNS name server responds with answers to queries against its database. The most common types of records stored in the DNS database are for start of authority ( SOA ), IP addresses ( A and AAAA ), SMTP mail exchangers (MX), name servers (NS), pointers for reverse DNS ...
"DNS redirection ensures that harmful websites are blocked while legitimate websites remain reachable without noticeable disruption," MCMC said, adding that it had blocked 24,277 websites between ...
Comparing domain names is an essential part of enforcing this policy, so DNS rebinding circumvents this protection by abusing the Domain Name System (DNS). This attack can be used to breach a private network by causing the victim's web browser to access computers at private IP addresses and return the results to the attacker.
A series of incorrectly issued certificates from 2001 onwards [1] [2] damaged trust in publicly trusted certificate authorities, [3] and accelerated work on various security mechanisms, including Certificate Transparency to track misissuance, HTTP Public Key Pinning and DANE to block misissued certificates on the client side, and CAA to block misissuance on the certificate authority side.