The Index Poisoning. Sharing Systems Mehmet Aslan Hacettepe Üniversitesi
|
|
|
- Poppy Dennis
- 5 years ago
- Views:
Transcription
1 The Index Poisoning Attack in P2P File Sharing Systems Mehmet Aslan Hacettepe Üniversitesi
2 Introduction Pollution attack corrupt target content, make unusable, share 50%-80% of copies of popular titles in FastTrack (Spring 2004) high-bandwidth, respond to requests, expensive upload Index poisoning attack structured/unstructured systems vulnerable, under attack Index: allows user to discover locations (IP-port) of content inserting massive numbers of bogus (fake) records into index Record: randomly chosen file identifier if succeeds, user tries tens of identifiers, but nothing located less bandwidth and server resources
3 Introduction (cont.) Poisoning attack in two file sharing systems Overnet DHT-based (Distributed Hash Table) FastTrack two-tier unstructured P2P file-sharing systems vulnerable to index poisoning attack Methodology for estimate index poisoning and pollution levels Index poisoning is pervasive (widespread) in both systems Distributed blacklisting schema Distributed denial-of-service (DDoS) attack based on DHT
4 P2P Terminology Title specific song or video Version different versions of a title presence of large number of rippers/encoders including metadata (ID3 tags in MP3 files) thousands for a popular title Identifier hash of the version Copy copies of identical version thousands for a version
5 P2P Terminology (cont.) Advertised information version identifier location of file (IP& port) keywords Query keyword search responses include metadata Two port numbers in a P2P node messaging port number: queries & replies service port number: uploading files
6 Index Poisoning Attack Falsely advertising copies of targeted titles random version identifier not correspond to any version IP addresses not correspond to any node unavailable service port numbers System fails to locate the copy more sources needed looking Large number of copies with distinct random identifiers Mixing in polluted versions allowing to download, but corrupted Decoy attack (index poisoning, pollution, both)
7 Poisoning & Pollution Levels version poison level / version pollution level / version clean level poison level / pollution level / clean level (copy)
8 FastTrack Ordinary Nodes (ON) SuperNodes (SN) ON provides to SN version identifier, metadata SN maintains local index identifiers, metadata, locations ON sends query with keywords SN forwards the query Reply contains version identifier, location, metadata GUI displays one result per line To attack, send to SN bogus identifier, IP or port Connection with hundreds of SNs, advertise thousands
9 Overnet Nodes are equal, no hierarchy Nodes join with a 128-bit ID Node sends to DHT file location, version identifier (hash of file) Other nodes update local index key: version identifier, value: node s identifier, IP, port Node extract keywords from file s metadata and hashes advertises key: hash of keyword, value: version identifier Query with a hashed keyword as key node sends all version identifiers, client filters using keywords Query with a version identifier as key node sends locations of copies, client dowload
10 Overnet (cont.) To attack, determine keywords from title and hash them Generate random identifier publish key: hash of keyword, value: random identifier search indefinetely for identifier, displaying looking Publish key: hash of keyword, value: version identifier publish key: version identifier, value: bogus location First approach is simpler, attackers currently using it Attacker can advertise hundreds/thousands of identifiers for each keyword in title
11 Methodology To estimate poisoning & pollution levels query & download & determine clean / polluted automated detection more difficult manually listen (or watch)? time/bandwidth/storage/downloading time/failed download Without downloading track copies, record version identifier with node (harvesting) create list of versions create list of distinct copies for each version determine from harvested data (poisoned/polluted/clean) determine poison & pollution levels, for both versions & copies
12 Harvesting in FastTrack Previous work is used for harvesting Obtain information for each title set of version identifiers list of copies for each identifier source IP address and service port number for each copy Distinguish distinct copies tuple: (IP address, service port number) 10 songs from itunes top-100 list are selected (April 2005) harvesting 10 titles for 1-hour period
13 Harvesting in Overnet Extract a keyword and hash it for each title Insert node into DHT for each hashed keyword with ID is hash Collect advertisements name of title & identifier (content hash) source IP address & source (messaging) port number Distinguish distinct copies source IP address & source port number 10 songs from itunes top-100 list are selected (June 2005) harvesting 10 titles for 1.5-hour period
14 Classifying the Versions Most users advertise few version, few users advertise most tuple: (IP address, service port number) in FastTrack tuple: (IP address, messaging port number) in Overnet
15 Classifying the Versions (cont.) Heavy user vs Light user
16 Poisoning & Pollution Levels
17 Data Set
18 Decoyer Detection
19 Decoyer Detection (cont.)
20 Decoyer Detection (cont.)
21 Decoyer Detection (cont.)
22 Rating Versions & Advertisements Authenticate versions & advertisements Content rating websites & forums verified file hashes or download links subject to legal attack: forced to shut down Authenticate advertisements are difficult verifying source has a version corresponds to advertised hash attackers have hashes authenticated, but not upload files
23 Rating Sources Assign reputations to narrow ranges of IP addresses /n subnets Local reputation Exchange lists with SNs and combine for global reputation Send global list to ONs for blacklisting ON chooses threshold for blacklisting In Overnet, number of versions for every keyword
24 Rating Sources (cont.)
25 Node Insertion Attack Inserted nodes become SNs, manipulate indexes not observed in FastTrack Observed in Overnet
26 DDoS Attack with DHT Sources advertise content, IP address and port number Numerous poisoned records inserted with targeted host users repeatedly send requests to host Overnet can be made the source of a DDoS Inserted nodes are advertised so heavily responses cause university network down
27 Conclusion Index allows users to discover and locate content Poison the index by advertising to it bogus records Advertisement authentication is difficult verify content is not only present but will also be uploaded When designing P2P system, bear poisoning attack in mind Content and advertisement authentication is unsuccessful User authentication, distributed reputations and blacklisting DHTs are vulnerable to poisoning attacks relatively small number of nodes is sufficient to poison attacker can insert its own node DHT can be turned into an engine for a massive DDoS attack
28 The Index Poisoning Attack in P2P File Sharing Systems
Peer-to-peer systems and overlay networks
Complex Adaptive Systems C.d.L. Informatica Università di Bologna Peer-to-peer systems and overlay networks Fabio Picconi Dipartimento di Scienze dell Informazione 1 Outline Introduction to P2P systems
Using DNS Service for Amplification Attack
Using DNS Service for Amplification Attack Outline Use DNS service to achieve load balancing for a server cluster Carry out an amplification attack by taking advantage of DNS service Enforce firewall rules
Introduction to Peer-to-Peer Systems
Introduction Introduction to Peer-to-Peer Systems Peer-to-peer (PP) systems have become extremely popular and contribute to vast amounts of Internet traffic PP basic definition: A PP system is a distributed
BitTorrent. Masood Khosroshahy. July Tech. Report. Copyright 2009 Masood Khosroshahy, All rights reserved.
BitTorrent Masood Khosroshahy July 2009 Tech. Report Copyright 2009 Masood Khosroshahy, All rights reserved. www.masoodkh.com Contents Contents 1 Basic Concepts 1 2 Mechanics 3 2.1 Protocols: Tracker and
TOP TEN DNS ATTACKS PROTECTING YOUR ORGANIZATION AGAINST TODAY S FAST-GROWING THREATS
TOP TEN DNS ATTACKS PROTECTING YOUR ORGANIZATION AGAINST TODAY S FAST-GROWING THREATS 1 Introduction Your data and infrastructure are at the heart of your business. Your employees, business partners, and
Peer-to-Peer Systems. Network Science: Introduction. P2P History: P2P History: 1999 today
Network Science: Peer-to-Peer Systems Ozalp Babaoglu Dipartimento di Informatica Scienza e Ingegneria Università di Bologna www.cs.unibo.it/babaoglu/ Introduction Peer-to-peer (PP) systems have become
CS 640 Introduction to Computer Networks. Today s lecture. What is P2P? Lecture30. Peer to peer applications
Introduction to Computer Networks Lecture30 Today s lecture Peer to peer applications Napster Gnutella KaZaA Chord What is P2P? Significant autonomy from central servers Exploits resources at the edges
EE 122: Peer-to-Peer (P2P) Networks. Ion Stoica November 27, 2002
EE 122: Peer-to-Peer (P2P) Networks Ion Stoica November 27, 22 How Did it Start? A killer application: Naptser - Free music over the Internet Key idea: share the storage and bandwidth of individual (home)
12/5/16. Peer to Peer Systems. Peer-to-peer - definitions. Client-Server vs. Peer-to-peer. P2P use case file sharing. Topics
// Topics Peer to Peer Systems Introduction Client-server vs peer to peer Peer-to-peer networks Routing Overlays Structured vs unstructured Example PP Systems Skype login server Peer-to-peer - definitions
DDoS Attacks using P2P Networks
DDoS Attacks using P2P Networks Pankaj Kohli and Umadevi Ganugula Centre for Security Theory and Algorithmic Research International Institute of Information Technology Hyderabad, India - 500032 {pankaj
Attack Prevention Technology White Paper
Attack Prevention Technology White Paper Keywords: Attack prevention, denial of service Abstract: This document introduces the common network attacks and the corresponding prevention measures, and describes
Peer-to-Peer (P2P) networks have emerged as a popular
, July 3-5, 213, London, U.K. On Combating Content Poisoning in Peer-to-Peer Networks Mohammed Hawa, Member, IAENG, Raed Al-Zubi, Khalid A. Darabkh, and Ghazi Al-Sukkar Abstract Poisoning attacks on Peer-to-Peer
Securing The Reputation Management in WINNOWING P2P Scheme. Nawaf Almudhahka Matthew Locklear
Securing The Reputation Management in WINNOWING P2P Scheme Nawaf Almudhahka Matthew Locklear Agenda Overview Motivation Assumptions & Threat Model Approach Security Analysis of TVC Model Description Results
Peer-to-Peer Internet Applications: A Review
Peer-to-Peer Internet Applications: A Review Davide Quaglia 01/14/10 Introduction Key points Lookup task Outline Centralized (Napster) Query flooding (Gnutella) Distributed Hash Table (Chord) Simulation
Peer-to-Peer Protocols and Systems. TA: David Murray Spring /19/2006
Peer-to-Peer Protocols and Systems TA: David Murray 15-441 Spring 2006 4/19/2006 P2P - Outline What is P2P? P2P System Types 1) File-sharing 2) File distribution 3) Streaming Uses & Challenges 2 Problem:
Peer-to-Peer (P2P) Systems
Peer-to-Peer (P2P) Systems What Does Peer-to-Peer Mean? A generic name for systems in which peers communicate directly and not through a server Characteristics: decentralized self-organizing distributed
Ossification of the Internet
Ossification of the Internet The Internet evolved as an experimental packet-switched network Today, many aspects appear to be set in stone - Witness difficulty in getting IP multicast deployed - Major
Neustar Security Solutions Overview
Neustar Security Solutions Overview Our digital, hyperconnected world is a world of opportunity, but also one of anonymity and criminal activity. Your job is to minimize risk and enforce an acceptable
CPSC 426/526. P2P Lookup Service. Ennan Zhai. Computer Science Department Yale University
CPSC 4/5 PP Lookup Service Ennan Zhai Computer Science Department Yale University Recall: Lec- Network basics: - OSI model and how Internet works - Socket APIs red PP network (Gnutella, KaZaA, etc.) UseNet
CS555: Distributed Systems [Fall 2017] Dept. Of Computer Science, Colorado State University
![CS555: Distributed Systems [Fall 2017] Dept. Of Computer Science, Colorado State University](/thumbs/95/125142682.jpg "CS555: Distributed Systems [Fall 2017] Dept. Of Computer Science, Colorado State University")
CS 555: DISTRIBUTED SYSTEMS [P2P SYSTEMS] Shrideep Pallickara Computer Science Colorado State University Frequently asked questions from the previous class survey Byzantine failures vs malicious nodes
Wireless Network Security Spring 2016
Wireless Network Security Spring 2016 Patrick Tague Class #11 - Identity Mgmt.; Routing Security 2016 Patrick Tague 1 Class #11 Identity threats and countermeasures Basics of routing in ad hoc networks
DNS Security. *http://compsec101.antibozo.net/pa pers/dnssec/dnssec.html. IT352 Network Security Najwa AlGhamdi
DNS Security *http://compsec101.antibozo.net/pa pers/dnssec/dnssec.html 1 IT352 Network Security Najwa AlGhamdi Introduction The DNS provides a mechanism that resolves Internet host names into IP addresses
Indian Journal of Science and Technology Vol. 5 No. 7 (July 2012) ISSN:
A novel approach for mitigating Distributed Denial of Service attacks drawn on bit-torrent protocol in computer networks S. S. Nagamuthu Krishnan 1* and V. Saravanan 2 1 Thiagarajar School of Management,
Wireless Network Security Spring 2015
Wireless Network Security Spring 2015 Patrick Tague Class #10 Network Layer Threats; Identity Mgmt. 2015 Patrick Tague 1 Class #10 Summary of wireless network layer threats Specific threats related to
Making Gnutella-like P2P Systems Scalable
Making Gnutella-like P2P Systems Scalable Y. Chawathe, S. Ratnasamy, L. Breslau, N. Lanham, S. Shenker Presented by: Herman Li Mar 2, 2005 Outline What are peer-to-peer (P2P) systems? Early P2P systems
Hoda Rohani Anastasios Poulidis Supervisor: Jeroen Scheerder. System and Network Engineering July 2014
Hoda Rohani Anastasios Poulidis Supervisor: Jeroen Scheerder System and Network Engineering July 2014 DNS Main Components Server Side: Authoritative Servers Resolvers (Recursive Resolvers, cache) Client
Configuring attack detection and prevention 1
Contents Configuring attack detection and prevention 1 Overview 1 Attacks that the device can prevent 1 Single-packet attacks 1 Scanning attacks 2 Flood attacks 3 TCP fragment attack 4 Login DoS attack
Analysis of OpenFlow Networks.
Analysis of OpenFlow Networks. Vikram Kulkarni Jayesh Kawli Introduction: Enterprise data center networks are rapidly reaching a breaking point, because of the data center network scale and complexity
Distributed Systems. peer-to-peer Johan Montelius ID2201. Distributed Systems ID2201
Distributed Systems ID2201 peer-to-peer Johan Montelius 1 Idéa use resources in edge of network computing storage communication 2 Computing 3 seti@home central server millions of clients hundred of thousands
Configuring attack detection and prevention 1
Contents Configuring attack detection and prevention 1 Overview 1 Attacks that the device can prevent 1 Single-packet attacks 1 Scanning attacks 2 Flood attacks 3 TCP fragment attack 4 Login DoS attack
Chair for Network Architectures and Services Department of Informatics TU München Prof. Carle. Network Security. Chapter 8
Chair for Network Architectures and Services Department of Informatics TU München Prof. Carle Network Security Chapter 8 System Vulnerabilities and Denial of Service Attacks System Vulnerabilities and
Outline NET 412 NETWORK SECURITY PROTOCOLS. Reference: Lecture 7: DNS Security 3/28/2016
Networks and Communication Department NET 412 NETWORK SECURITY PROTOCOLS Lecture 7: DNS Security 2 Outline Part I: DNS Overview of DNS DNS Components DNS Transactions Attack on DNS Part II: DNS Security
deseo: Combating Search-Result Poisoning Yu USF
deseo: Combating Search-Result Poisoning Yu Jin @MSCS USF Your Google is not SAFE! SEO Poisoning - A new way to spread malware! Why choose SE? 22.4% of Google searches in the top 100 results > 50% for
Business Logic Attacks BATs and BLBs
Business Logic Attacks BATs and BLBs Noa Bar-Yosef Security Research Engineer Imperva 12/02/2009 noa@imperva.com Copyright The Foundation Permission is granted to copy, distribute and/or modify this document
Changes to Underlying Architecture Impact Universal Search Results
The Changing Face of the SERPs: 8 out of 10 High Volume Keywords Now Have Universal Search Results If you listen closely you can almost hear the old-time Search Marketer saying In my day we didn t have
Network Security. Evil ICMP, Careless TCP & Boring Security Analyses. Mohamed Sabt Univ Rennes, CNRS, IRISA Thursday, October 4th, 2018
Network Security Evil ICMP, Careless TCP & Boring Security Analyses Mohamed Sabt Univ Rennes, CNRS, IRISA Thursday, October 4th, 2018 Part I Internet Control Message Protocol (ICMP) Why ICMP No method
DISTRIBUTED COMPUTER SYSTEMS ARCHITECTURES
DISTRIBUTED COMPUTER SYSTEMS ARCHITECTURES Dr. Jack Lange Computer Science Department University of Pittsburgh Fall 2015 Outline System Architectural Design Issues Centralized Architectures Application
Overlay and P2P Networks. Unstructured networks: Freenet. Dr. Samu Varjonen
Overlay and P2P Networks Unstructured networks: Freenet Dr. Samu Varjonen 1.2.2015 Contents Last week Napster Skype Gnutella BitTorrent and analysis This week: Freenet Introduction to structured networks
Anti-DDoS. FAQs. Issue 11 Date HUAWEI TECHNOLOGIES CO., LTD.
Issue 11 Date 2018-05-28 HUAWEI TECHNOLOGIES CO., LTD. Copyright Huawei Technologies Co., Ltd. 2019. All rights reserved. No part of this document may be reproduced or transmitted in any form or by any
Page 1. How Did it Start?" Model" Main Challenge" CS162 Operating Systems and Systems Programming Lecture 24. Peer-to-Peer Networks"
How Did it Start?" CS162 Operating Systems and Systems Programming Lecture 24 Peer-to-Peer Networks" A killer application: Napster (1999) Free music over the Internet Key idea: share the storage and bandwidth
1(11) Peer to peer networking
1(11) Peer to peer networking Carl Berg calle.berg@gmail.com Chalmers 2005 2(11) Table of contents Introduction Abstract 3 History 4 Technical overview 5 Comparison to the client/server approach 6 Requirements
Internet Layers. Physical Layer. Application. Application. Transport. Transport. Network. Network. Network. Network. Link. Link. Link.
Internet Layers Application Application Transport Transport Network Network Network Network Link Link Link Link Ethernet Fiber Optics Physical Layer Wi-Fi ARP requests and responses IP: 192.168.1.1 MAC:
BIG-IP Application Security Manager : Implementations. Version 13.0
BIG-IP Application Security Manager : Implementations Version 13.0 Table of Contents Table of Contents Preventing DoS Attacks on Applications... 13 What is a DoS attack?...13 About recognizing DoS attacks...
Scalable overlay Networks
overlay Networks Dr. Samu Varjonen 1 Lectures MO 15.01. C122 Introduction. Exercises. Motivation. TH 18.01. DK117 Unstructured networks I MO 22.01. C122 Unstructured networks II TH 25.01. DK117 Bittorrent
Protecting DNS Critical Infrastructure Solution Overview. Radware Attack Mitigation System (AMS) - Whitepaper
Protecting DNS Critical Infrastructure Solution Overview Radware Attack Mitigation System (AMS) - Whitepaper Table of Contents Introduction...3 DNS DDoS Attacks are Growing and Evolving...3 Challenges
Outline. Peer-to-Peer. P2p file-sharing. Wither p2p? What s out there? The p2p challenge C1: Search(human s goals) -> file
Outline Peer-to-Peer - pp file sharing techniques Downloading: Whole-file vs. chunks Searching Centralized index (Napster, etc.) Flooding (Gnutella, etc.) Smarter flooding (KaZaA, ) Routing (Freenet, etc.)
The Design and Implementation of a Next Generation Name Service for the Internet (CoDoNS) Presented By: Kamalakar Kambhatla
The Design and Implementation of a Next Generation Name Service for the Internet (CoDoNS) Venugopalan Ramasubramanian Emin Gün Sirer Presented By: Kamalakar Kambhatla * Slides adapted from the paper -
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY
INTERNATIONAL JOURNAL OF PURE AND APPLIED RESEARCH IN ENGINEERING AND TECHNOLOGY A PATH FOR HORIZING YOUR INNOVATIVE WORK PEER-TO-PEER FILE SHARING WITH THE BITTORRENT PROTOCOL APURWA D. PALIWAL 1, PROF.
Security+ Guide to Network Security Fundamentals, Fourth Edition. Network Attacks Denial of service Attacks
Security+ Guide to Network Security Fundamentals, Fourth Edition Network Attacks Denial of service Attacks Introduction: What is DoS? DoS attack is an attempt (malicious or selfish) by an attacker to cause
6 WAYS Google s First Page
6 WAYS TO Google s First Page FREE EBOOK 2 CONTENTS 03 Intro 06 Search Engine Optimization 08 Search Engine Marketing 10 Start a Business Blog 12 Get Listed on Google Maps 15 Create Online Directory Listing
CS 161 Computer Security
Paxson Spring 2013 CS 161 Computer Security Homework 4 Due: Monday Apr 29, at 10:00PM Version 1.1 (Apr 19) Instructions. Submit your solution electronically via your class account by Monday Apr 29, at
Computer Forensics: Investigating Network Intrusions and Cybercrime, 2nd Edition. Chapter 2 Investigating Network Traffic
Computer Forensics: Investigating Network Intrusions and Cybercrime, 2nd Edition Chapter 2 Investigating Network Traffic Objectives After completing this chapter, you should be able to: Understand network
NETWORK SECURITY. Ch. 3: Network Attacks
NETWORK SECURITY Ch. 3: Network Attacks Contents 3.1 Network Vulnerabilities 3.1.1 Media-Based 3.1.2 Network Device 3.2 Categories of Attacks 3.3 Methods of Network Attacks 03 NETWORK ATTACKS 2 3.1 Network
Overlay and P2P Networks. Unstructured networks. Prof. Sasu Tarkoma
Overlay and P2P Networks Unstructured networks Prof. Sasu Tarkoma 20.1.2014 Contents P2P index revisited Unstructured networks Gnutella Bloom filters BitTorrent Freenet Summary of unstructured networks
ACN Peer-to-Peer Networks. Günther Langmann
ACN 2007 Peer-to-Peer Networks Günther Langmann Content What are P2P Networks Properties of P2P Networks History of P2P Networks Classifications Comparison Unstructured and structured P2P Networks Advantages
Modern IP Communication bears risks
Modern IP Communication bears risks How to protect your business telephony from cyber attacks Voice-over-IP (VoIP) provides many new features over PSTN. However, the interconnection with your IT infrastructure
CS 161 Computer Security
Paxson Spring 2011 CS 161 Computer Security Homework 4 Due: Monday May 2, at 11:59pm Instructions. Submit your solution electronically via your class account by Monday May 2, at 11:59pm. You should upload
AMP-Based Flow Collection. Greg Virgin - RedJack
AMP-Based Flow Collection Greg Virgin - RedJack AMP- Based Flow Collection AMP - Analytic Metadata Producer : Patented US Government flow / metadata producer AMP generates data including Flows Host metadata
Scaling Problem Millions of clients! server and network meltdown. Peer-to-Peer. P2P System Why p2p?
Scaling Problem Millions of clients! server and network meltdown Peer-to-Peer 15-441 2 P2P System Why p2p? Leverage the resources of client machines (peers) Computation, storage, bandwidth Scaling: Create
Routing Scheme in Energy efficient based Protocols for Wireless Sensor Networks
Routing Scheme in Energy efficient based Protocols for Wireless Sensor Networks 1 Chiranjeevi Rampilla, 2 Pallikonda Anil Kumar, 1 Student, DEPT.OF CSE, PVPSIT, KANURU, VIJAYAWADA. 2 Asst.Professor, DEPT.OF
Distributed Systems: Models and Design
Distributed Systems: Models and Design Nicola Dragoni Embedded Systems Engineering DTU Informatics 1. Architectural Models 2. Interaction Model 3. Design Challenges 4. Case Study: Design of a Client-Server
BIG-IP Application Security Manager : Getting Started. Version 12.1
BIG-IP Application Security Manager : Getting Started Version 12.1 Table of Contents Table of Contents Introduction to Application Security Manager...5 What is Application Security Manager?...5 When to
First and Second Generation Peer to Peer Networks
First and Second Generation Peer to Peer Networks and Department of Computer Science Indian Institute of Technology New Delhi, India Outline 1 2 Overview Details 3 History of The mp3 format was the first
itunes U Guidelines Creating your itunes U site
Creating your itunes U site Contents Overview 1 s the basic building blocks 2 Why metadata matters 3 Site art and design 5 Additional resources 7 Overview Welcome to itunes U, an innovative way to distribute
Overlay and P2P Networks. Unstructured networks. PhD. Samu Varjonen
Overlay and P2P Networks Unstructured networks PhD. Samu Varjonen 25.1.2016 Contents Unstructured networks Last week Napster Skype This week: Gnutella BitTorrent P2P Index It is crucial to be able to find
Ethical Hacking and. Version 6. Spamming
Ethical Hacking and Countermeasures Version 6 Module XL Spamming News Source: http://www.nzherald.co.nz/ Module Objective This module will familiarize you with: Spamming Techniques used by Spammers How
Scaling Problem Millions of clients! server and network meltdown. Peer-to-Peer. P2P System Why p2p?
Peer-to-Peer Scaling Problem Millions of clients! server and network meltdown 15-441 2 P2P System Why p2p? Leverage the resources of client machines (peers) Computation, storage, bandwidth 3 Scaling: Create
Basic Concepts in Intrusion Detection
Technology Technical Information Services Security Engineering Roma, L Università Roma Tor Vergata, 23 Aprile 2007 Basic Concepts in Intrusion Detection JOVAN GOLIĆ Outline 2 Introduction Classification
F5 DDoS Hybrid Defender : Setup. Version
F5 DDoS Hybrid Defender : Setup Version 13.1.0.3 Table of Contents Table of Contents Introducing DDoS Hybrid Defender... 5 Introduction to DDoS Hybrid Defender...5 DDoS deployments... 5 Example DDoS Hybrid
Microsoft Exam Security fundamentals Version: 9.0 [ Total Questions: 123 ]
![Microsoft Exam Security fundamentals Version: 9.0 [ Total Questions: 123 ]](/thumbs/96/126527464.jpg "Microsoft Exam Security fundamentals Version: 9.0 [ Total Questions: 123 ]")
s@lm@n Microsoft Exam 98-367 Security fundamentals Version: 9.0 [ Total Questions: 123 ] Question No : 1 The Active Directory controls, enforces, and assigns security policies and access rights for all
Peer-to-Peer Architectures and Signaling. Agenda
Peer-to-Peer Architectures and Signaling Juuso Lehtinen Juuso@netlab.hut.fi Slides based on presentation by Marcin Matuszewski in 2005 Introduction P2P architectures Skype Mobile P2P Summary Agenda 1 Introduction
Secure web proxy resistant to probing attacks
Technical Disclosure Commons Defensive Publications Series December 04, 2017 Secure web proxy resistant to probing attacks Benjamin Schwartz Follow this and additional works at: http://www.tdcommons.org/dpubs_series
Reputation Management in P2P Systems
Reputation Management in P2P Systems Pradipta Mitra Nov 18, 2003 1 We will look at... Overview of P2P Systems Problems in P2P Systems Reputation Management Limited Reputation Sharing Simulation Results
Scaling Problem Computer Networking. Lecture 23: Peer-Peer Systems. Fall P2P System. Why p2p?
Scaling Problem 15-441 Computer Networking Millions of clients server and network meltdown Lecture 23: Peer-Peer Systems Peter Steenkiste Fall 2010 www.cs.cmu.edu/~prs/15-441-f10 2 P2P System Why p2p?
CDNs and Peer-to-Peer
This Lecture This will be a why lecture, not a how to one CDNs and Peer-to-Peer EECS 89 Computer Networks http://www.eecs.umich.edu/~zmao/eecs89 Z. Morley Mao Tuesday Nov 9, Emphasis is on why these developments
Computer Networks. Routing
Computer Networks Routing Topics Link State Routing (Continued) Hierarchical Routing Broadcast Routing Sending distinct packets Flooding Multi-destination routing Using spanning tree Reverse path forwarding
(Im)possibility of Enumerating Zombies. Yongdae Kim (U of Minnesota - Twin Cities)
(Im)possibility of Enumerating Zombies Yongdae Kim (U of Minnesota - Twin Cities) From Gunter Ollmann at Damballa's blog Botnet and DDoS Botnets becoming the major tool for DDoS 5 million nodes Botnet
A Collaborative Network Security Management System in Metropolitan Area Network
211 Third International Conference on Communications and Mobile Computing A Collaborative Network Security Management System in Metropolitan Area Network Beipeng Mu and Xinming Chen Department of Automation
Enabling Performance & Stress Test throughout the Application Lifecycle
Enabling Performance & Stress Test throughout the Application Lifecycle March 2010 Poor application performance costs companies millions of dollars and their reputation every year. The simple challenge
A Survey On Peer-to-Peer Network Attacks and Defenses
IJIRST International Journal for Innovative Research in Science & Technology Volume 1 Issue 7 December 2014 ISSN (online): 2349-6010 A Survey On Peer-to-Peer Network Attacks and Defenses Chirag Parmar
Fixed Internetworking Protocols and Networks. IP mobility. Rune Hylsberg Jacobsen Aarhus School of Engineering
Fixed Internetworking Protocols and Networks IP mobility Rune Hylsberg Jacobsen Aarhus School of Engineering rhj@iha.dk 1 2011 ITIFN Mobile computing Vision Seamless, ubiquitous network access for mobile
ADVANCED, UNKNOWN MALWARE IN THE HEART OF EUROPE
ADVANCED, UNKNOWN MALWARE IN THE HEART OF EUROPE AGENDA Network Traffic Analysis: What, Why, Results Malware in the Heart of Europe Bonus Round 2 WHAT: NETWORK TRAFFIC ANALYSIS = Statistical analysis,
CE Advanced Network Security Denial of Service Attacks II
CE 817 - Advanced Network Security Denial of Service Attacks II Lecture 8 Mehdi Kharrazi Department of Computer Engineering Sharif University of Technology Acknowledgments: Some of the slides are fully
Host Identity Indirection Infrastructure Hi 3. Jari Arkko, Pekka Nikander and Börje Ohlman Ericsson Research
Host Identity Indirection Infrastructure Hi 3 Jari Arkko, Pekka Nikander and Börje Ohlman Ericsson Research Presentation outline Motivation Background Secure i 3 Hi 3 Summary 2 Hi 3 motivation Question:
DOMAIN NAME SECURITY EXTENSIONS
DOMAIN NAME SECURITY EXTENSIONS The aim of this paper is to provide information with regards to the current status of Domain Name System (DNS) and its evolution into Domain Name System Security Extensions
A (sample) computerized system for publishing the daily currency exchange rates
A (sample) computerized system for publishing the daily currency exchange rates The Treasury Department has constructed a computerized system that publishes the daily exchange rates of the local currency
- Content Security in P2P
Why Jenny can t share the content with Jane? - Content Security in P2P Heather Yu Huawei Technologies heathery@ieee.org Future of Networked Home A vision voice video text Data gaming IPTV streaming IM
CLOAK OF VISIBILITY : DETECTING WHEN MACHINES BROWSE A DIFFERENT WEB
CLOAK OF VISIBILITY : DETECTING WHEN MACHINES BROWSE A DIFFERENT WEB CIS 601: Graduate Seminar Prof. S. S. Chung Presented By:- Amol Chaudhari CSU ID 2682329 AGENDA About Introduction Contributions Background
Configuring the Oracle Network Environment. Copyright 2009, Oracle. All rights reserved.
Configuring the Oracle Network Environment Objectives After completing this lesson, you should be able to: Use Enterprise Manager to: Create additional listeners Create Oracle Net Service aliases Configure
An Adaptive Online System for Efficient Processing of Hierarchical Data
Dimitrios Tsoumakos Nectarios Koziris {nasia, dtsouma, nkoziris}@cslab.ece.ntua.gr Motivation (1) Efficient, on-line processing of bulk data Organized in concept hierarchies Over one or more dimensions
Peer-to-Peer Signalling. Agenda
Peer-to-Peer Signalling Marcin Matuszewski marcin@netlab.hut.fi S-38.115 Signalling Protocols Introduction P2P architectures Skype Mobile P2P Summary Agenda 1 Introduction Peer-to-Peer (P2P) is a communications
A Case For OneSwarm. Tom Anderson University of Washington.
A Case For OneSwarm Tom Anderson University of Washington http://oneswarm.cs.washington.edu/ With: Jarret Falkner, Tomas Isdal, Alex Jaffe, John P. John, Arvind Krishnamurthy, Harsha Madhyastha and Mike
Security Guide SAP Supplier InfoNet
SAP Supplier InfoNet Table of Contents 1 About this document....3 2 Network and communication security....4 2.1 Network security....4 2.2 Communication channel security....4 2.3 Network resource security....4
Image Spam. Introduction. Project description:
Image Spam Introduction Image spam is a kind of E-mail spam where the message text of the spam is presented as a picture in an image file. Since most modern graphical E-mail client software will render
Arpeggio: Metadata Searching and Content Sharing with Chord
Arpeggio: Metadata Searching and Content Sharing with Chord Austin T. Clements, Dan R.K. Ports, and David R. Karger MIT Computer Science and Artificial Intelligence Laboratory, 32 Vassar St., Cambridge
Chapter 7. Denial of Service Attacks
Chapter 7 Denial of Service Attacks DoS attack: An action that prevents or impairs the authorized use of networks, systems, or applications by exhausting resources such as central processing units (CPU),
Using A Cost-Based Framework For Analyzing Denial Of Service
Using A Cost-Based Framework For Analyzing Denial Of Service Presented By: Joan Paul A Cost-Based Framework for Analysis of Denial of Service in Networks Catherine Meadows (2001) Analyzing DoS-Resistance
Honeypots. Security on Offense. by Kareem Sumner
Honeypots Security on Offense by Kareem Sumner Agenda Introduction What Are Honeypots? Objectives Successful Deployment Advantages And Disadvantages Types Of Honeypots Honeypot Software Future of Honeypots/Honeynets
Testing Exploit-Prevention Mechanisms in Anti-Malware Products
Testing Exploit-Prevention Mechanisms in Anti-Malware Products Andreas Marx & Maik Morgenstern AV-Test GmbH, Magdeburg, Germany http://www.av-test.org Presented at the CARO Workshop 2009 in Budapest, Hungary
Scalable overlay Networks
overlay Networks Dr. Samu Varjonen 1 Lectures MO 15.01. C122 Introduction. Exercises. Motivation. TH 18.01. DK117 Unstructured networks I MO 22.01. C122 Unstructured networks II TH 25.01. DK117 Bittorrent