Public Recursive Name Server
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. Reasons for using these services include: * speed, compared to using ISP DNS services * filtering (security, ad-blocking, porn-blocking, etc.) * reporting * avoiding censorship * redundancy (smart caching) * access to unofficial alternative top level domains not found in the official DNS root zone The DNS root zone is the top-level DNS zone in the hierarchical namespace of the Domain Name System (DNS) of the Internet. Before October 1, 2016, the root zone had been overseen by the Internet Corporation for Assigned Names and Numbers (ICANN ... *temporary unavailability of the ISP's name server Public DNS resolver operators often cite increas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Domain Name System Security Extensions
The Domain Name System Security Extensions (DNSSEC) is a suite of Extension Mechanisms for DNS, extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System (DNS hijacking, DNS) in Internet Protocol (IPv6, IP) Networks and States, networks. The protocol provides message authentication, cryptographic authentication of data, SOCKS, authenticated denial of existence, and data Information_security#Integrity, integrity, but not Information_security#Availability, availability or Information_security#Confidentiality, confidentiality. Overview The original design of the Domain Name System did not include any security features. It was conceived only as a scalable distributed system. The Domain Name System Security Extensions (DNSSEC) attempt to add security, while maintaining backward compatibility. of 2004 documents some of the known threats to the DNS, and their solutions in DNSSEC. DNSSEC was designed to protect applicatio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Name Server
A name server is a computer application that implements a network service for providing responses to queries against a directory service. It translates an often humanly meaningful, text-based identifier to a system-internal, often numeric identification or addressing component. This service is performed by the server in response to a Communication protocol, service protocol request. An example of a name server is the server component of the Domain Name System (DNS), one of the two principal namespaces of the Internet. The most important function of DNS servers is the translation (resolution) of human-memorable domain names and hostnames into the corresponding numeric Internet Protocol (IP) addresses, the second principal name space of the Internet which is used to identify and locate computer systems and resources on the Internet. Domain name server The Internet maintains two principal namespaces: the domain name hierarchyRFC 1034, ''Domain Names—Concepts and Facilities'', P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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AdGuard
AdGuard is an ad blocking service for Windows, Linux, MacOS, Android and iOS. AdGuard is also available as a browser extension. Features AdGuard Home AdGuard Home acts as a recursive DNS resolver, which prevents most advertisements from displaying by responding with an invalid address for domains that appear in its filter lists. AdGuard Browser extensions The browser extension blocks video ads, interstitial ads, floating ads, pop-ups, banners, and text ads. It is also able to handle anti- AdBlock scripts. AdGuard blocks spyware and warns users of malicious websites. AdGuard Content Blocker is an additional browser extension for Yandex Browser and Samsung Internet, which uses Content Blocker API. It downloads filter list updates and requests browsers to enforce them via Content Blocker API. AdGuard applications AdGuard has Windows and Mac versions, as well as native mobile versions for Android and iOS. The application can set up a local VPN, filtering all tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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EDNS Client Subnet
EDNS Client Subnet (ECS) is an option in the Extension Mechanisms for DNS that allows a recursive DNS resolver to specify the subnetwork for the host or client on whose behalf it is making a DNS query. This is generally intended to help speed up the delivery of data from content delivery networks (CDNs), by allowing better use of DNS-based load balancing to select a service address near the client when the client computer is not necessarily near the recursive resolver. When an authoritative name server receives a DNS query, it takes advantage of ECS DNS extension to resolve the hostname to a CDN which is geolocationally near to the client IP's subnet, hence the client makes further requests to a nearby CDN, thereby reducing latency. The EDNS client subnet mechanism is specified in . Privacy and security implications Because ECS provides client network information to the upstream authoritative DNS server, the extension reveals some information about the client's location that ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Quad9
Quad9 is a Public recursive name server, global public recursive Domain_Name_System, DNS Domain_Name_System#Recursive_and_caching_name_server, resolver that aims to protect users from malware and phishing. Quad9 is operated by the Quad9 Foundation, a Switzerland, Swiss Charitable organization, public-benefit, not-for-profit Foundation (nonprofit), foundation with the purpose of improving the Internet privacy, privacy and cybersecurity of Internet users, headquartered in Zürich. Quad9 is entirely subject to Swiss Information privacy law, privacy law, and the Swiss government extends that protection of the law to Quad9's users throughout the world, regardless of citizenship or country of residence. Security and privacy Several independent evaluations have found Quad9 to be the most effective (97%) at blocking malware and phishing domains. As of June, 2021, Quad9 was blocking more than 100 million malware infections and phishing attacks per day. Quad9's malware filtering is a use ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Dyn (company)
Dyn, Inc. () was an Internet performance management company that also dealt with web application security, offering products to monitor, control, and optimize online infrastructure, and also domain registration services and email products. The company was acquired by Oracle Corporation in 2016. It began operating as a global business unit of Oracle in 2017. History Dyn was created as a community-led student project by Tim Wilde during his undergraduate studies at Worcester Polytechnic Institute. Eventually, Wilde, the founder, brought in Jeremy Hitchcock and Tom Daly as partners. Dyn enabled students to access lab computers and print documents remotely. The project then moved toward Domain Name System (DNS) services. The first iteration was a free donation-based dynamic DNS service known as DynDNS. The project required $25,000 to stay open and raised over $40,000. The donation-based model continued until 2002 and ended with a launch of "donator-only" DNS services. Later, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Oracle Corporation
Oracle Corporation is an American Multinational corporation, multinational computer technology company headquartered in Austin, Texas. Co-founded in 1977 in Santa Clara, California, by Larry Ellison, who remains executive chairman, Oracle was the List of the largest software companies, third-largest software company in the world in 2020 by revenue and market capitalization. The company's 2023 ranking in the Forbes Global 2000, ''Forbes'' Global 2000 was 80. The company sells Database, database software, particularly Oracle Database, and cloud computing. Oracle's core application software is a suite of enterprise software products, such as enterprise resource planning (ERP) software, human capital management (HCM) software, customer relationship management (CRM) software, enterprise performance management (EPM) software, Customer Experience Commerce (CX Commerce) and supply chain management (SCM) software. History Larry Ellison, Bob Miner, and Ed Oates co-founded Oracle in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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OpenDNS
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. The OpenDNS Global Network processes an estimated 100 billion DNS queries daily from 85 million users through 25 data centers worldwide. On August 27, 2015, Cisco acquired OpenDNS for million in an all-cash transaction, plus retention-based incentives for OpenDNS. OpenDNS's business services were renamed Cisco Umbrella; home products retained the OpenDNS name. Cisco said that it intended to continue development of OpenDNS with its other cloud-based security products, and that it would continue its existing services. Until June , OpenDNS provided an online advertising, ad-supported service and a paid advertisement-free service. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Neustar
Neustar, Inc. is an American technology company that provides real-time information and analytics for risk, digital performance, defense, telecommunications, entertainment, and marketing industries, and also provides clearinghouse and directory services to the global communications and Internet industries. Neustar was the domain name registry for a number of top-level domains, including .biz, .us (on behalf of United States Department of Commerce), .co, .nyc (on behalf of the city of New York), and .in (on behalf of the National Internet Exchange of India) until the sale of the division to GoDaddy in 2020. Until the end of 2018, Neustar was also a North American Numbering Plan Administrator under behalf of the Federal Communications Commission, a role continued from its founder, Lockheed Martin. Their first contract was granted in 1997 and was renewed under its spin-off in 1999, 2004, and 2012. Since 2019, it has been replaced by Somos, Inc. History Neustar was found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Mullvad
Mullvad is a commercial VPN service based in Sweden. The name "Mullvad" is the word for "mole" in the Swedish language. Mullvad operates using the WireGuard and OpenVPN protocols. It also supports Shadowsocks as a bridge protocol for censorship circumvention. Mullvad's VPN client software is publicly available under the GPLv3, a free and open-source software license. History Mullvad was launched in March 2009 by Amagicom AB, and it had begun by supporting connections via the OpenVPN protocol in 2009. Mullvad was an early adopter and supporter of the WireGuard protocol, announcing the availability of the new VPN protocol in March 2017 and making a "generous donation" supporting WireGuard development between July and December 2017. In September 2018, the cybersecurity firm Cure53 performed a penetration test on Mullvad's macOS, Windows, and Linux applications. Seven issues were found which were addressed by Mullvad. Cure53 tested only the applications and supporting functions ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Gcore
Gcore is an edge AI, cloud, network, and security company headquartered in Luxembourg. As of March 2024, its global network includes over 180 Points of Presence (PoPs) across six continents. History Gcore was founded in 2014 in Luxembourg. The company built its own content delivery network, originally designed for the needs of the gaming industry. In 2016, Gcore's infrastructure included fifteen points of presence, many in regions underserved by hyperscale cloud providers. In 2020, the company formed partnerships with Intel and Equinix. In 2022, Gcore partnered with Graphcore to launch the European AI Cloud, leveraging IPUs to speed up machine learning tasks. In March 2024, Gcore announced the acquisition of a web application and API protection (WAAP) solution from StackPath. In May 2024, Philipp Rösler, former vice-chancellor of Germany and federal minister of health joined the Gcore board. In April 2024, Gcore received a commendation in the Industry Innovation categ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Google Public DNS
Google Public DNS is a Domain Name System (DNS) service offered to Internet users worldwide by Google. It functions as a recursive name server. Google Public DNS was announced on December 3, 2009, in an effort described as "making the web faster and more secure." As of 2018, it is the largest public DNS service in the world, handling over a trillion queries per day. Google Public DNS is not related to Google Cloud DNS, which is a DNS hosting service. Service The Google Public DNS service operates recursive name servers for public use at the four IP addresses listed below. These addresses are mapped to the nearest operational server by anycast routing. The service does not use conventional DNS name server software, such as BIND, instead relying on a custom-designed implementation, conforming to the DNS standards set forth by the IETF. It fully supports the DNSSEC protocol since 19 March 2013. Previously, Google Public DNS accepted and forwarded DNSSEC-formatted messages but ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |