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OpenDNS is an American company providing Domain Name System (DNS) resolution services—with features such as phishing protection, optional content filtering, and DNS lookup in its DNS servers—and a cloud computing security product suite, Umbrella, designed to protect enterprise customers from malware, botnets, phishing, and targeted online attacks.
In other words, its recursive resolvers now use DNSCurve to communicate to authoritative servers if available. [16] On December 6, 2011, OpenDNS announced a new tool, called DNSCrypt. [17] DNSCrypt is based on similar cryptographic tools as DNSCurve, but instead protects the channel between OpenDNS and its users. [18]
MaraDNS is a free software DNS server by Sam Trenholme that claims a good security history and ease of use. [9] [10] In order to change any DNS records, MaraDNS needs to be restarted. Like djbdns dnscache, the MaraDNS 2.0 stand-alone recursive resolver ("Deadwood") does not use threads. [11]
The article reads like there is an typo-correction feature shipped by using the OpenDNS DNS-resolvers. This isn't technically true, as the typo-feature is implemented by using HTTP redirects only - it has nothing to do with DNS whatsoever as not existing domains all resolve to the very same IP address - see dig @208.67.222.222 foo.ogr +short .
OpenDNSSEC is a computer program that manages the security of domain names on the Internet. The project intends to drive adoption of Domain Name System Security Extensions (DNSSEC) to further enhance Internet security.
A public recursive name server (also called public DNS resolver) is a name server service that networked computers may use to query the Domain Name System (DNS), the decentralized Internet naming system, in place of (or in addition to) name servers operated by the local Internet service provider (ISP) to which the devices are connected.
A wildcard DNS record is specified by using a * as the leftmost label (part) of a domain name, e.g. *.example.com. The exact rules for when a wildcard will match are specified in RFC 1034, but the rules are neither intuitive nor clearly specified. This has resulted in incompatible implementations and unexpected results when they are used.
Furthermore, the paradigm of database replication for which the serial number check (and indeed zone transfer itself) is designed, which involves a single central DNS server holding the primary version of the database with all other DNS servers merely holding copies, simply does not match that of many modern DNS server packages.