Explaining Distributed Denial of Service Attacks to Campus Leaders

Apr 05, 2014

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2. The Audience For Today's Talk. Unlike many of my previous I2 or Joint Techs talks which have dealt with technically arcane issues or tactical level concerns, this talk is meant to be more strategic, and is really targeted at the CIOs and Institutional Executive Representatives who are at today's

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Explaining Distributed Denial of Service Attacks to Campus Leaders

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Presentation Transcript

Denial of Service Attacks

Spring 2007. CS 155. Denial of Service Attacks. Dan Boneh. What is network DoS?. Goal: take out a large site with little computing work How: Amplification Small number of packets  big effect Two types of amplification attacks: DoS bug:

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Denial of Service attacks

18-9-2012. 2. The old Internet. More or less until 2000/2001Collaboration via mail and NewsInformation publishing and retrievingeCommerce starting to growAttacks then took out specific destinations for specific reasons. 18-9-2012. 3. The new Internet. Enterprises are moving more and more of the

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Denial of Service Attacks

What is Denial of Service?. Denial of Service (DoS)Attacker intentionally degrades or disables an application or computer systemDistributed Denial of Service (DDoS)Attacker controls a large group of systems to coordinate a large scale DoS attack against a system. Cost of DDoS Attacks. Hard to qua

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Distributed Denial of Service Attacks

Distributed Denial of Service Attacks. Potential Damage of DDoS Attacks. The Problem: Massive distributed DoS attacks have the potential to severely decrease backbone availability and can virtually detach a network from the Internet. Motives for DDoS Attacks.

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Denial of Service attacks

Denial of Service attacks. Types of DoS attacks. Bandwidth consumption attackers have more bandwidth than victim, e.g T3 (45Mpbs) attacks T1 (1.544 Mbps). attackers amplify their bandwidth engaging other computers to attack victim with higher bandwidth, e.g. 100 56Kbps attack a T1

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Denial of Service Attacks

Denial of Service Attacks. Clayton Sullivan. Overview. Denial of Service Attack History What is a Denial of Service Attack? Modes of Attack Performing a Denial of Service Attack Distributed Denial of Service Detection and Prevention. History. First major attacks start to appear in 2001.

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Denial of Service Attacks

Denial of Service Attacks. Denial of service ( DOS ). Too many requests for a particular web site “ clog the pipe ” so that no one else can access the site.

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Distributed Denial of Service Attacks

Distributed Denial of Service Attacks. Shankar Saxena Veer Vivek Kaushik. Agenda . Introduction and Famous Attacks How Attack Takes Place Types of DDOS Attacks Smurfing UDP Flooding TCP SYN Flooding. Introduction.

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Denial of Service Attacks

Denial of Service Attacks. Simulating Strategic Firewall Placement By James Box, J.A. Hamilton Jr., Adam Hathcock, Alan Hunt. Denial of Service Attacks. A distributed denial of service attack involves overloading a company’s Internet connection with more traffic than it can handle.

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Distributed Denial of Service (DDoS) Attacks

Distributed Denial of Service (DDoS) Attacks. Goal: Prevent a network site from doing its normal business Method: overwhelm the site with attack traffic Response: ?. The Problem . Characterizing the Problem. An attacker compromises many hosts Usually spread across Internet

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Denial of Service Attacks

Denial of Service Attacks. Nick Feamster CS 7260 February 22, 2006. Today’s Lecture. What is Denial of Service? Attacks and Defenses Packet-flooding attacks Attack: SYN Floods Defenses: Ingress Filtering, SYN Cookies, Client puzzles Low-rate attacks

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Autonomic Response to Distributed Denial of Service Attacks

Autonomic Response to Distributed Denial of Service Attacks. Paper by: Dan Sterne, Kelly Djahandari, Brett Wilson, Bill Babson, Dan Schnackenberg, Harley Holliday and Travis Reid Presented by: Jesus F. Morales. Overview. Introduction: the problem Proposed solution

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Denial of Service Attacks

Denial of Service Attacks. Lesson 14. Types of DoS Attacks. Bandwidth Consumption Attackers consume all available bandwidth on a particular network. Often an issue of who has the larger “pipe” Resource Starvation

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Denial of Service Attacks

Spring 2006. CS 155. Denial of Service Attacks. Dan Boneh. What is network DoS?. Goal: take out a large site with little computing work How: Amplification Small number of packets  big effect Two types of amplification attacks: DoS bug:

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DENIAL OF SERVICE ATTACKS

DENIAL OF SERVICE ATTACKS. Outline . The Backscatter Analysis Technique Observation and Results Validation Conclusions. Key Idea…. Backscatter analysis provides quantitative data for a global view on Dos activity using local monitoring. Introduction. Backscatter Analysis Technique.

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Denial of Service Attacks

Denial of Service Attacks. Understanding to Denial of Services. How can a service be denied?. Using up resources is the most common approach Several ways.. Crash the machine Put it into an infinite loop Crash routers on the path to the machine Use up a machine resource

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Denial of Service Attacks

Denial of Service Attacks. Adapted from Dan Boneh, Stanford. What is network DoS?. Goal: take out a large site with little computing work How: Amplification Small number of packets  big effect Two types of amplification attacks: DoS bug:

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Distributed Denial of Service Attacks

Distributed Denial of Service Attacks. Darius Law. What is DDOS?. Distributed denial-of-service attack is one in which a multitude of compromised systems attack a single target, thereby causing denial-of-service for users of the targeted system

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Denial-of-Service Attacks

Denial-of-Service Attacks. Justin Steele. Definition. “A "denial-of-service" attack is characterized by an explicit attempt by attackers to prevent legitimate users of a service from using that service.” 1 Denial-of-service attacks deal with the issue of availability. 1 CERT Website.

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Denial of Service Attacks

Denial of Service Attacks. Denial-0f-Service ( DoS ) Attack. The NIST Computer Security Incident Handling Guide defines a DoS attack as:

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Explaining Distributed Denial of Service Attacks to Campus Leaders

Explaining Distributed Denial of Service Attacks to Campus Leaders. Internet2 Member Meeting Arlington, Virginia 3-4 PM May 3rd, 2005 Joe St Sauver, Ph.D. (joe@uoregon.edu) University of Oregon Computing Center. http://darkwing.uoregon.edu/~joe/ddos-exec/. The Audience For Today's Talk.

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Denial of Service Attacks

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