Internet Relay Chat Internet Relay Chat (IRC) is an application layer protocol that facilitates transfer of messages in the form of text. The chat process works on a client/server model of networking. IRC clients are computer programs that a user can install on their system. These clients are able to communicate with chat servers to transfer messages to other clients. It is mainly designed for group communication in discussion forums, called channels, but also allows one-to-one communication via private message as well as chat and data transfer, including file sharing.
Anonymous (group) Anonymous (used as a mass noun) is a loosely associated international network of activist and hacktivist entities. A website nominally associated with the group describes it as "an internet gathering" with "a very loose and decentralized command structure that operates on ideas rather than directives". The group became known for a series of well-publicized publicity stunts and distributed denial-of-service (DDoS) attacks on government, religious, and corporate websites. Anonymous originated in 2003 on the imageboard 4chan, representing the concept of many online and offline community users simultaneously existing as an anarchic, digitized global brain. Anonymous members (known as "Anons") can be distinguished in public by the wearing of stylised Guy Fawkes masks.
IRC Client Extra-Ordinaire Welcome to the IceChat Web site. IceChat is a popular IRC (Internet Relay Chat) Client that can be used in Windows 95/98/ME/2000/XP/2003/Vista and also Windows 7. It has been tested on 64bit versions of XP, Vista and Windows 7 as well. Ping flood A flood ping can also be used as a diagnostic for network packet loss and throughput issues. References Jump up ^ See also
ircII project What is ircII ? ircII is an IRC and ICB client that runs under most UNIX platforms. It comes in source form and is completely free of any charges or fees. The ircII project is a group of people who maintain the source code, incorporating fixes and new features. The current release is ircII 20131230 which is available at the ircII ftp site (see below). A daily updated snapshot of the ircII tree is also available as ircII-current. SYN flood A normal connection between a user (Alice) and a server. The three-way handshake is correctly performed. SYN Flood. The attacker (Mallory) sends several packets but does not send the "ACK" back to the server. The connections are hence half-opened and consuming server resources. Alice, a legitimate user, tries to connect but the server refuses to open a connection resulting in a denial of service.
Smurf attack The Smurf Attack is a distributed denial-of-service attack in which large numbers of Internet Control Message Protocol (ICMP) packets with the intended victim's spoofed source IP are broadcast to a computer network using an IP Broadcast address. Most devices on a network will, by default, respond to this by sending a reply to the source IP address. If the number of machines on the network that receive and respond to these packets is very large, the victim's computer will be flooded with traffic. This can slow down the victim's computer to the point where it becomes impossible to work on. History
Internet Relay Chat Client Once again I must apologize for the lack of updates. But, if a web site is still running, the project is not completely dead. With that said, I've been paying $55/month for this virtual host since 1997 and that is a bit much when you add it up over the years, especially since registrations is recent years is close to zero due to lack of updates and interest. The website will be moving to a new and cheaper home soon and it will be an aspx.net-based site.
UDP flood attack Check for the application listening at that port;See that no application listens at that port;Reply with an ICMP Destination Unreachable packet. Thus, for a large number of UDP packets, the victimized system will be forced into sending many ICMP packets, eventually leading it to be unreachable by other clients. The attacker(s) may also spoof the IP address of the UDP packets, ensuring that the excessive ICMP return packets do not reach them, and anonymizing their network location(s). Most operating systems mitigate this part of the attack by limiting the rate at which ICMP responses are sent. Software such as Low Orbit Ion Cannon and UDP Unicorn can be used to perform UDP flooding attacks.
Cross-site scripting Background Security on the web is based on a variety of mechanisms, including an underlying concept of trust known as the same origin policy. This essentially states that if content from one site (such as is granted permission to access resources on the system, then any content from that site will share these permissions, while content from another site ( will have to be granted permissions separately.
Denial-of-service attack DDoS Stacheldraht Attack diagram. Perpetrators of DoS attacks typically target sites or services hosted on high-profile web servers such as banks, credit card payment gateways, and even root nameservers. DoS threats are also common in business, and are sometimes responsible for website attacks. This technique has now seen extensive use in certain games, used by server owners, or disgruntled competitors on games, such as server owners' popular Minecraft servers. Increasingly, DoS attacks have also been used as a form of resistance.