Managing the Threat of Denial-of-Service Attacks
Denial-of-service (DoS) attacks have been launched against Internet sites for years. They are a significant problem because they can shut an organization off from the Internet and because there is no comprehensive solution "no silver bullet" for protecting your site or recovering from a denial of service. In this paper, we will describe the current situation with denial-of-service attacks and explore ways of addressing the problem.
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An introduction to the Fake players bug and DoS 0.1.1
An attacker can fill a game server with a custom number of inexistent players (1 player is 'emulated' by no more than one or two packets of data) and the server after having reached the maximum number of players will not accept others. The effect is a Denial of Service where the real players cannot use the service offered by the server because it is already full.
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Barbarians at the Gate: An Introduction to Distributed Denial of Service Attacks
Recently, major news outlets reported that a coordinated attack designed to disable several of the Internet's root name servers had taken place. The attack, described as sophisticated and complex, is known as a distributed denial of service (DDoS). Although no serious outages occurred, it was a hot topic in the security world - again. Again? Similar attacks first made headlines in February 2000. Although discussed in security circles for some time before that, this was the first prolonged example of a DDoS, and prevented legitimate traffic from reaching major sites for several hours. Yahoo, eBay, Buy.com, and CNN were but a few mjor sites who were inaccessible to their customers for extended periods of time. Now, almost three years later, can it be that we're still vulnerable? Unfortunately the answer is yes. This article will explain the concept of DDoS attacks, how they work, how to react if you become a target, and how the security community can work together to prevent them.
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Help Defeat Denial of Service Attacks: Step-by-Step
Organizations that operate networks connected to the Internet may be serving as unwitting participants in Denial of Service (DoS) Attacks like those that hit many organizations in early February, 2000. You can act now to reduce the chances that your network could be used to damage other networks if you implement the following two steps. These two steps should be implemented immediately, and detailed instructions for doing this are provided below. Broad application of these two steps can significantly reduce the threat posed by DoS Attacks.
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Consensus Roadmap for Defeating Distributed Denial of Service Attacks
The distributed denial of service attacks during the week of February 7 highlighted security weaknesses in hosts and software used in the Internet that put electronic commerce at risk. These attacks also illuminated several recent trends and served as a warning for the kinds of high-impact attacks that we may see in the near future. This document outlines key trends and other factors that have exacerbated these Internet security problems, summarizes near-term activities that can be taken to help reduce the threat, and suggests research and development directions that will be required to manage the emerging risks and keep them within more tolerable bounds. For the problems described, activities are listed for user organizations, Internet service providers, network manufacturers, and system software providers.
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Closing the Floodgates: DDoS Mitigation Techniques
To be on the receiving end of a distributed denial of service (DDoS) attack is a nightmare scenario for any network administrator, security specialist or access provider. It begins instantly, without warning, and continues relentlessly: machines down, jammed bandwidth, overloaded routers. An effective, immediate response is often difficult and may depend on third parties, such as ISPs. With these challenges in mind, this article will explore some techniques that systems administrators and security professionals can employ should they ever find themselves in this rather undesirable situation.
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Network Security - Defense Against DoS/DDoS Attacks
DoS/DDoS attacks are virulent types of Internet attacks, which have caused some of the biggest web sites on the world, such as Yahoo, eBay, Amazon to became inaccessible to customers, partners, and users, sometimes for up to twenty-four hours
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Denial of Service (DOS) Attacks
During the release of a new software product specialized to track spam, ACME Software Inc noticed that there was not as much traffic as they hoped to receive. During further investigation, they found that they could not view their own website. At that moment, the VP of sales received a call from the company's broker stating that ACME Software Inc stock fell 4 point due to lack of confidence. Several states away, spammers didn't like the idea of lower profit margins do to an easy to install spam blocking software so they thought they would fight back. Earlier that day, they took control of hundreds of compromised computers and used them as DoS zombies to attack ACME Software Inc's Internet servers in a vicious act of cyber assault. During an emergency press conference the next morning, ACME Software Inc's CIO announced his resignation as a result of a several million dollar corporate loss.
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Botnet Tracking: Exploring a Root-Cause Methodology to Prevent Distributed Denial-of-Service Attacks
In this paper we show that preventive mechanisms can be as effective with much less effort: We present an approach to (distributed) DoS attack prevention that is based on the observation that coordinated automated activity by many hosts needs a mechanism to remotely control them. To prevent such attacks, it is therefore possible to identify, infiltrate and analyze this remote control mechanism and to stop it in an automated fashion. We show that this method can be realized in the Internet by describing how we infiltrated and tracked IRC-based botnets which are the main DoS technology used by attackers today.
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Denial of Service FAQ Basic
This information text is for network administrators who know little about Denial of Service, this text covers all the basic information on Denial of Service attacks and related information. Denial of Service attacks are becoming more and more common on the internet, it does not take a sophisticated hacker to set up and launch a denial of service attack, rather the most common attacker is a young script kiddie, they can accomplish a lot just by using tools downloadable on the internet.
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