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introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
introduction to Botnet
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introduction to Botnet

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a brief description about bot nets and working of Bots

a brief description about bot nets and working of Bots

Published in: Engineering, Technology
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Transcript

  • 1. PRESENTATION ON BOTNET
  • 2. OUTLINE Introduction to Botnet  Botnet Life-cycle  Botnet in Network Security  Botnet Uses  Botnet Detection  Preventing Botnet Infection  Botnet Research  Conclusion
  • 3. INTRODUCTION  A Botnet is a network of compromised computers under the control of a remote attacker  controller of a botnet is able to direct the activities of these compromised computers  Botnet Terminology  Bot Herder (Bot Master)  Bot  Bot Client  IRC Server  Command and Control Channel (C&C)
  • 4. INTRODUCTION TO BOTNET(TERMINOLOGY) IRC Channel IRC Server Code Server IRC Channel C&C Traffic Updates Victim Attack Bot Master
  • 5. BOTNET LIFE-CYCLE
  • 6. BOTNET LIFE-CYCLE
  • 7. BOTNET LIFE-CYCLE
  • 8. BOTNET LIFE-CYCLE
  • 9. BOTNET IN NETWORK SECURITY  Internet users are getting infected by bots  Many times corporate and end users are trapped in botnet attacks  Today 16-25% of the computers connected to the internet are members of a botnet  In this network bots are located in various locations  It will become difficult to track illegal activities  This behavior makes botnet an attractive tool for intruders and increase threat against network security
  • 10. BOTNET IS USED FOR- Bot MasterMoney
  • 11. HOW BOTNET IS USED?? Distributed Denial of Service (DDoS) attacks  Sending Spams  Phishing  Addware  Spyware  Click Fraud
  • 12. BOTNET DETECTION Two approaches for botnet detection based on  Setting up honeynets  Passive traffic monitoring  Signature based  Anomaly based  DNS based
  • 13. BOTNET DETECTION:SETTING UP HONEYNETS Windows Honey pot  Honeywall Responsibilities: DNS/IP-address of IRC server and port number (optional) password to connect to IRC-server Nickname of bot Channel to join and (optional) channel-password
  • 14. BOTNET DETECTION:SETTING UP HONEYNETS Bot 1. Malicious Traffic Sensor 3. Authorize 2. Inform bot’s IP Bot Master
  • 15. BOTNET DETECTION:TRAFFIC MONITORING Signature based: Detection of known botnets  Anomaly based: Detect botnet using following anomalies  High network latency  High volume of traffic  Traffic on unusual port  Unusual system behaviour  DNS based: Analysis of DNS traffic generated by botnets
  • 16. BOTNET DETECTION  Determining the source of a botnet-based attack is challenging:  Traditional approach: Every zombie host is an attacker Botnets can exist in a benign state for an arbitrary amount of time before they are used for a specific attack  New trend: P2P networks
  • 17. PREVENTING BOTNET INFECTIONS Use a Firewall  Use Antivirus (AV) software  Deploy an Intrusion Prevention System (IPS)  Define a Security Policy and  Share Policies with your users systematically
  • 18. CONCLUSION  Botnets pose a significant and growing threat against cyber security  It provides key platform for many cyber crimes (DDOS)  As network security has become integral part of our life and botnets have become the most serious threat to it  It is very important to detect botnet attack and find the solution for it

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