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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] |
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] |
DNS Over TLS
DNS over TLS (DoT) is a network security protocol for encrypting and wrapping Domain Name System (DNS) queries and answers via the Transport Layer Security (TLS) protocol. The goal of the method is to increase user privacy and security by preventing eavesdropping and manipulation of DNS data via man-in-the-middle attacks. The well-known port number for DoT is 853. While DNS over TLS is applicable to any DNS transaction, it was first standardized for use between stub or forwarding resolvers and recursive resolvers, in in May of 2016. Subsequent IETF efforts specify the use of DoT between recursive and authoritative servers ("Authoritative DNS over TLS" or "ADoT") and a related implementation between authoritative servers (Zone Transfer-over-TLS or "xfr-over-TLS"). Server software BIND supports DoT connections as of version 9.17. Earlier versions offered DoT capability by proxying through stunnel. Unbound has supported DNS over TLS since 22 January 2023. Unwind has supported ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNSSEC
The Domain Name System Security Extensions (DNSSEC) is a suite of extension specifications by the Internet Engineering Task Force (IETF) for securing data exchanged in the Domain Name System ( DNS) in Internet Protocol ( IP) networks. The protocol provides cryptographic authentication of data, authenticated denial of existence, and data integrity, but not availability or 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 applications using DNS from accepting forged or manipulated DNS data, such as that created by DNS cache poisoning. All answers from DNSSEC protected zones are digitally signed. By checking the digital signature, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
Packet Clearing House
Packet Clearing House (PCH) is the international organization responsible for providing operational support and security to critical Internet infrastructure, including Internet exchange points and the core of the Domain Name System. The organization also works in the areas of cybersecurity coordination, regulatory policy and Internet governance. Overview Packet Clearing House (PCH) was formed in 1994 by Chris Alan and Mark Kent to provide efficient regional and local network interconnection alternatives for the West Coast of the United States. It has grown to become a leading proponent of neutral independent network interconnection and provider of route-servers at major exchange points worldwide. PCH provides equipment, training, data, and operational support to organizations and individual researchers seeking to improve the quality, robustness, and Internet accessibility. Major PCH projects include: * Building and supporting nearly half of the world's approxima ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNS Over HTTPS
DNS over HTTPS (DoH) is a protocol for performing remote Domain Name System (DNS) resolution via the HTTPS protocol. A goal of the method is to increase user privacy and security by preventing eavesdropping and manipulation of DNS data by man-in-the-middle attacks by using the HTTPS protocol to encrypt the data between the DoH client and the DoH-based DNS resolver. By March 2018, Google and the Mozilla Foundation had started testing versions of DNS over HTTPS. – Google provides two endpoints: one for its 2018 JSON API, one for an RFC 8484 API. In February 2020, Firefox switched to DNS over HTTPS by default for users in the United States. In May 2020, Chrome switched to DNS over HTTPS by default. An alternative to DoH is the DNS over TLS (DoT) protocol, a similar standard for encrypting DNS queries, differing only in the methods used for encryption and delivery. Based on privacy and security, whether either protocol is superior is a matter of controversial debate, while othe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DNSCrypt
DNSCrypt is a network protocol that authenticates and encrypts Domain Name System (DNS) traffic between the user's computer and recursive name servers. DNSCrypt wraps unmodified DNS traffic between a client and a DNS resolver in a cryptographic construction, preventing eavesdropping and forgery by a man-in-the-middle. It also mitigates UDP-based amplification attacks by requiring a question to be at least as large as the corresponding response. Thus, DNSCrypt helps to prevent DNS amplification attacks. DNSCrypt was originally designed by Frank Denis and Yecheng Fu. Multiple free and open source software implementations exist. It is available for a variety of operating systems, including Unix, Apple iOS, Linux, Android, and Microsoft Windows. The free and open source software implementation dnscrypt-proxy additionally integrates ODoH. Deployment In addition to private deployments, the DNSCrypt protocol has been adopted by several public DNS resolvers, the vast majority ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
IP Address
An Internet Protocol address (IP address) is a numerical label such as that is assigned to a device connected to a computer network that uses the Internet Protocol for communication. IP addresses serve two main functions: network interface identification, and location addressing. Internet Protocol version 4 (IPv4) was the first standalone specification for the IP address, and has been in use since 1983. IPv4 addresses are defined as a 32-bit number, which became too small to provide enough addresses as the internet grew, leading to IPv4 address exhaustion over the 2010s. Its designated successor, IPv6, uses 128 bits for the IP address, giving it a larger address space. Although IPv6 deployment has been ongoing since the mid-2000s, both IPv4 and IPv6 are still used side-by-side . IP addresses are usually displayed in a human-readable notation, but systems may use them in various different computer number formats. CIDR notation can also be used to designate how much ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Domain Name
In the Internet, a domain name is a string that identifies a realm of administrative autonomy, authority, or control. Domain names are often used to identify services provided through the Internet, such as websites, email services, and more. Domain names are used in various networking contexts and for application-specific naming and addressing purposes. In general, a domain name identifies a network domain or an Internet Protocol (IP) resource, such as a personal computer used to access the Internet, or a server computer. Domain names are formed by the rules and procedures of the Domain Name System (DNS). Any name registered in the DNS is a domain name. Domain names are organized in subordinate levels ('' subdomains'') of the DNS root domain, which is nameless. The first-level set of domain names are the ''top-level domains'' (TLDs), including the ''generic top-level domains'' (gTLDs), such as the prominent domains com, info, net, edu, and org, and the ''country code t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Good
In philosophy, Common good (economics), economics, and political science, the common good (also commonwealth, common weal, general welfare, or public benefit) is either what is shared and beneficial for all or most members of a given community, or alternatively, what is achieved by citizenship, collective action, and active participation in the realm of politics and public service. The concept of the common good differs significantly among List of philosophies, philosophical doctrines. Early conceptions of the common good were set out by Ancient Greece, Ancient Greek philosophers, including Aristotle and Plato. One understanding of the common good rooted in Aristotelianism, Aristotle's philosophy remains in common usage today, referring to what one contemporary scholar calls the "good proper to, and attainable only by, the community, yet individually shared by its members." The concept of common good developed through the work of political theorists, moral philosophers, and public ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anycast
Anycast is a network addressing and routing methodology in which a single IP address is shared by devices (generally servers) in multiple locations. Routers direct packets addressed to this destination to the location nearest the sender, using their normal decision-making algorithms, typically the lowest number of BGP network hops. Anycast routing is widely used by content delivery networks such as web and name servers, to bring their content closer to end users. History The first documented use of anycast routing for topological load-balancing of Internet-connected services was in 1989; the technique was first formally documented in the IETF four years later. It was first applied to critical infrastructure in 2001 with the anycasting of the I-root nameserver. Early objections Early objections to the deployment of anycast routing centered on the perceived conflict between long-lived TCP connections and the volatility of the Internet's routed topology. In concept, a long-liv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
