It tries to detect malicious activity such as denial of service attacks, port scans or even attempts to crack into computers by monitoring network traffic.

1. WELCOME

2. NETWORK INTRUSION DETECTION SYSTEM

4. INTRODUCTION

12. DATA FLOW DIAGRAM LEVEL 0 : NIDS USER Administrator Intruder Maintain Details ask Maintain Details send dp Send cmd send cmd Hack dp Maintain Details

13. NIDS User LEVEL 1 : Data Packet Receive Acknowledgement Give the definition of the packet and content Give the definition of the packet like ip add, port number Packet Details D3 Packet content D4 Ack Details D5

14. Transform Monitor Administrator Intruder Data Packet User Maintain Name Password User_id address Contents Packet_no port Packet add Admin_id Password Name ENTITY RELATIONSHIP DIAGRAM FOR NIDS

15. UML DIAGRAM Transaction Receive Packet Send Packet View Intruder Close Transaction Start End

16. Controlling the System Log Off Shutdown Reboot Stop System Start End Fork Joint

17. TESTING

18. SCREEN SHOTS

19. Login

20. Home Page

21. Account Management

22. Lock

23. Intruder Registration

24. Non Intruder Registration

25. Sniffing

26. Detection

27. Packet Details

28. Network Management

29. Thank You