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Explore the use of multiple gateways for intrusion detection defense

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Explore the use of multiple gateways for intrusion detection defense ... clandestine intruders. Misconceptions. If I have Firewall , I don't need IDS ... – PowerPoint PPT presentation

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Title: Explore the use of multiple gateways for intrusion detection defense


1
Explore the use of multiple gateways for
intrusion detection defense
  • Sunil Bhave Sonali Patankar
  • CS526
  • Fall 2002

2
Problem Definition
  • In case of a DDOS attack, evaluate the available
    solutions, see if we can use multiple routers to
    a better solution. Explore ideas for new
    solution.

3
Terms in Intrusion Detection
  • Risk
  • Vulnerability
  • Attack
  • Penetration
  • External Intruder
  • Internal Intruder
  • masquerade as another user
  • clandestine intruders

4
Misconceptions
  • If I have Firewall , I dont need IDS
  • If my system is not protected , I can not harm
    other systems

5
Typical DDOS Attack
Attacker
Agent
Agent
Agent
Victim Router
Victim Site
6
Countermeasures to DDOS
  • Reroute the DNS entry to another address ( not
    great)
  • Filtering

7
Possible Solutions
  • Become a good Netizen, Protect yourself from
    becoming an accessory to attack
  • Use more than one router
  • Selective rerouting
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