Network Securityand Hacking Techniques

1. Network Security and Hacking Techniques DAY-4

2. Firewalls We are here Visible IP Address Internal Network PC Servers Linux and windows Host Application Servers Like IDS,Sniffers

7. What is Firewall?

8. Computer with firewall software

14. Static Packet Filter

17. Circuit Level Gateway

19. Application Level Gateway

21. Stateful Multilayer Inspection Firewall

23. Dual-Homed Host Architecture

24. Screened Host Architecture

25. Screened Subnet Architecture

29. Motivation for Intrusion Detection Unauthorized Use of Computer Systems Within Last 12 Months (source Indian ISP’s Study)

31. Why Is Intrusion Detection Necessary? Prevent Detect React/ Survive Security principles: layered mechanisms

36. An Adaptive IDS Architecture FW Quick and dirty Real-time IDS Best-effort in real-time Backend IDS Thorough and slow (scenario/trend) Dynamic Cost-sensitive Decision Making Detection Models

39. Circuit Diagrams of Taping 100Mb Ethernet Switch

40. Circuit Diagrams of Taping 1Gb Ethernet Switch

41. Circuit Diagrams of Taping 1Gb Ethernet Switch

47. Snort Web Access - ACID

52. END