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Undernet
The Undernet is the third largest publicly monitored Internet Relay Chat (IRC) network, c. 2022, with about 36 client servers serving 47,444 users in ~6000 channels at any given time. IRC clients can connect to Undernet via the global round robin irc.undernet.org, the region-specific round robins us.undernet.org and eu.undernet.org, IPv6 client servers irc6.undernet.org or a specific server from the server list. History Undernet was established in October 1992 by Danny Mitchell, Donald Lambert, and Laurent Demally as an experimental network running a modified version of the EFnet irc2.7 IRCd software, created in an attempt to make it less bandwidth-consumptive and less chaotic, as netsplits and takeovers were starting to plague EFnet. The Undernet IRC daemon became known as "ircu". Undernet was formed at a time when many small IRC networks were being started and subsequently disappearing; however, it managed to grow into one of the largest and oldest IRC networks despite some ...
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Undernet
The Undernet is the third largest publicly monitored Internet Relay Chat (IRC) network, c. 2022, with about 36 client servers serving 47,444 users in ~6000 channels at any given time. IRC clients can connect to Undernet via the global round robin irc.undernet.org, the region-specific round robins us.undernet.org and eu.undernet.org, IPv6 client servers irc6.undernet.org or a specific server from the server list. History Undernet was established in October 1992 by Danny Mitchell, Donald Lambert, and Laurent Demally as an experimental network running a modified version of the EFnet irc2.7 IRCd software, created in an attempt to make it less bandwidth-consumptive and less chaotic, as netsplits and takeovers were starting to plague EFnet. The Undernet IRC daemon became known as "ircu". Undernet was formed at a time when many small IRC networks were being started and subsequently disappearing; however, it managed to grow into one of the largest and oldest IRC networks despite some ...
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Internet Relay Chat
Internet Relay Chat (IRC) is a text-based chat system for instant messaging. IRC is designed for group communication in discussion forums, called ''channels'', but also allows one-on-one communication via private messages as well as chat and data transfer, including file sharing. Internet Relay Chat is implemented as an application layer protocol to facilitate communication in the form of text. The chat process works on a client–server networking model. Users connect, using a clientwhich may be a web app, a standalone desktop program, or embedded into part of a larger programto an IRC server, which may be part of a larger IRC network. Examples of programs used to connect include Mibbit, IRCCloud, KiwiIRC, and mIRC. IRC usage has been declining steadily since 2003, losing 60 percent of its users. In April 2011, the top 100 IRC networks served more than half a million users at a time. History IRC was created by Jarkko Oikarinen in August 1988 to replace a program cal ...
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IRC Channel Operator
Internet Relay Chat (IRC) is a text-based chat system for instant messaging. IRC is designed for Many-to-many, group communication in discussion forums, called ''#Channels, channels'', but also allows one-on-one communication via instant messaging, private messages as well as Direct Client-to-Client, chat and data transfer, including file sharing. Internet Relay Chat is implemented as an application layer protocol to facilitate communication in the form of text. The chat process works on a Client–server model, client–server networking model. Users connect, using a clientwhich may be a Web application, web app, a Computer program, standalone desktop program, or embedded into part of a larger programto an IRC server, which may be part of a larger IRC network. Examples of programs used to connect include Mibbit, IRCCloud, KiwiIRC, and mIRC. IRC usage has been declining steadily since 2003, losing 60 percent of its users. In April 2011, the top 100 IRC networks served more tha ...
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IRCd
An IRCd, short for Internet Relay Chat daemon, is server software that implements the IRC protocol, enabling people to talk to each other via the Internet (exchanging textual messages in real time). It is distinct from an IRC bot that connects outbound to an IRC channel. The server listens to connections from IRC clients on a set of TCP ports. When the server is part of an IRC network, it also keeps one or more established connections to other servers/daemons. The term ''ircd'' originally referred to only one single piece of software, but it eventually became a generic reference to any implementation of an IRC daemon. However, the original version is still distributed under the same name, and this article discusses both uses. History The original IRCd was known as 'ircd', and was authored by Jarkko Oikarinen (WiZ on IRC) in 1988. He received help from a number of others, such as Markku Savela (msa on IRC), who helped with the 2.2+msa release, etc. In its first revisions, IRC ...
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EFnet
EFnet or Eris-Free network is a major Internet Relay Chat (IRC) network, with more than 35,000 users. It is the modern-day descendant of the original IRC network. History Initially, most IRC servers formed a single IRC network, to which new servers could join without restriction, but this was soon abused by people who set up servers to sabotage other users, channels, or servers. Restriction grew and, in August 1990, eris.Berkeley.EDU was the last server indiscriminately allowing other servers to join it, Eris being the Greek goddess of strife and discord. A group of operators, with the support of Jarkko Oikarinen, introduced a new "Q-line" into their server configurations, to "quarantine" themselves away from eris by disconnecting from any subset of the IRC network as soon as they saw eris there. For a few days, the entire IRC network suffered frequent netsplits, but eventually the majority of servers added the Q-line and effectively created a new separate IRC net called ''EFn ...
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IRC Takeover
An IRC channel takeover is an acquisition of IRC channel operator status by someone other than the channel's owner. It has largely been eliminated due to the increased use of services on IRC networks. Riding the split The most common variety of channel takeover uses disconnections caused by a netsplit; this is called riding the split. After such mass disconnections, a channel may be left without users, allowing the first rejoining user to recreate the channel and gain operator status. When the servers merge, any pre-existing operators retain their status, allowing the new user to kick out the original operators and take over the channel. A simple prevention mechanism involves ''timestamping'' (abbreviated to ''TS''), or checking the creation dates of the channels being merged. This was first implemented by Undernet (ircu) and is now common in many IRC servers. If both channels were created at the same time, all user statuses are retained when the two are combined; if one is newer ...
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Round Robin DNS
Round-robin DNS is a technique of load distribution, load balancing, or fault-tolerance provisioning multiple, redundant Internet Protocol service hosts, e.g., Web server, FTP servers, by managing the Domain Name System's (DNS) responses to address requests from client computers according to an appropriate statistical model. In its simplest implementation, round-robin DNS works by responding to DNS requests not only with a single potential IP address, but with a list of potential IP addresses corresponding to several servers that host identical services. The order in which IP addresses from the list are returned is the basis for the term ''round robin''. With each DNS response, the IP address sequence in the list is permuted. Traditionally, IP clients initially attempt connections with the first address returned from a DNS query, so that on different connection attempts, clients would receive service from different providers, thus distributing the overall load among servers. ...
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IPv6
Internet Protocol version 6 (IPv6) is the most recent version of the Internet Protocol (IP), the communication protocol, communications protocol that provides an identification and location system for computers on networks and routes traffic across the Internet. IPv6 was developed by the Internet Engineering Task Force (IETF) to deal with the long-anticipated problem of IPv4 address exhaustion, and is intended to replace IPv4. In December 1998, IPv6 became a Draft Standard for the IETF, which subsequently ratified it as an Internet Standard on 14 July 2017. Devices on the Internet are assigned a unique IP address for identification and location definition. With the rapid growth of the Internet after commercialization in the 1990s, it became evident that far more addresses would be needed to connect devices than the IPv4 address space had available. By 1998, the IETF had formalized the successor protocol. IPv6 uses 128-bit addresses, theoretically allowing 2128, or approximatel ...
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Server (computing)
In computing, a server is a piece of computer hardware or software (computer program) that provides functionality for other programs or devices, called " clients". This architecture is called the client–server model. Servers can provide various functionalities, often called "services", such as sharing data or resources among multiple clients, or performing computation for a client. A single server can serve multiple clients, and a single client can use multiple servers. A client process may run on the same device or may connect over a network to a server on a different device. Typical servers are database servers, file servers, mail servers, print servers, web servers, game servers, and application servers. Client–server systems are usually most frequently implemented by (and often identified with) the request–response model: a client sends a request to the server, which performs some action and sends a response back to the client, typically with a result or acknowledg ...
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Netsplit
In computer networking, specifically Internet Relay Chat (IRC), netsplit is a disconnection between two servers. A split between any two servers splits the entire network into two pieces. Cause and effects Consider the graph to the right, which represents the computer network. Each line represents an established connection. Therefore, the server ''C'' is connected directly to ''A'', which is also connected to ''B'' and ''D''. If a disruption in the connection between ''C'' and ''A'' occurs, the connection may be terminated as a result. This can occur either by a socket producing an error, or by excessive lag in which the far server ''A'' anticipates this case (which is called a timeout). When the connection between ''A'' and ''C'' is severed, users who were connected to other servers that are no longer reachable on the network appear to quit. For example, if user ''Sara'' is connected to server ''A'', user ''Bob'' is connected to server ''B'', and user ''Joe'' is connected ...
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Flaming (Internet)
Flaming or roasting is the act of posting insults, often including profanity or other offensive language, on the internet. This term should not be confused with the term trolling, which is the act of someone going online, or in person, and causing discord. Flaming emerged from the anonymity that Internet forums provide cover for users to act more aggressively. Anonymity can lead to disinhibition, which results in the swearing, offensive, and hostile language characteristic of flaming. Lack of social cues, less accountability of face-to-face communications, textual mediation and deindividualization are also likely factors. Deliberate flaming is carried out by individuals known as flamers, which are specifically motivated to incite flaming. These users specialize in flaming and target specific aspects of a controversial conversation While these behaviors may be typical or expected in certain types of forums, they can have dramatic, adverse effects in others. Flame wars can have a las ...
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Internet Bot
An Internet bot, web robot, robot or simply bot, is a software application that runs automated tasks (scripts) over the Internet, usually with the intent to imitate human activity on the Internet, such as messaging, on a large scale. An Internet bot plays the client role in a client–server model whereas the server role is usually played by web servers. Internet bots are able to perform tasks, that are simple and repetitive, much faster than a person could ever do. The most extensive use of bots is for web crawling, in which an automated script fetches, analyzes and files information from web servers. More than half of all web traffic is generated by bots. Efforts by web servers to restrict bots vary. Some servers have a robots.txt file that contains the rules governing bot behavior on that server. Any bot that does not follow the rules could, in theory, be denied access to or removed from the affected website. If the posted text file has no associated program/software/app, then ...
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