1. Network Monitor By Zhenhong Zhao

2. What is the Network Monitor? The Network Monitor is a tool that gets information off of the host on the LAN. – Enumerating all hosts on the LAN. – This utility allows you to get the names of the hosts in the network and their IP addresses. – It also allows you to get the user list off of any host. – Scanning any computer on the network and reporting all opening ports of this computer.

3. Why? Authentication Who are you? Authorization Are you allowed access to the information?

4. How? Microsoft Visual Basic 6.0 Winsock used

5. Host 1Host 3Host 2 Host 4Host 5 Wsock 32 Enumerated

6. Host 1Host 3Host 2 Host 4Host 5 Wsock 32 Enumerated

7. Host 1Host 3Host 2 Host 4Host 5 Wsock 32 IP Address and Users

8. Host3 Host 1Host 3Host 2 Host 4Host 5 Wsock 32 IP Address and Users

9. Info Host 1Host 3Host 2 Host 4Host 5 Wsock 32 IP Address and Users

10. Why the Port Scanner? Each time you send or receive data through the Internet, your mail (or web, chat, or whatever) program must connect to a remote port of a remote host.

12. response Host 1Host 3Host 2 Host 4Host 5 Wsock 32 Port scanner send

13. Working Model

14. Advantages Friendly user interface The modular design Easy administration Enforced security strategy

15. Future Plans List the user name that logs on each computer, and has ability to communicate with that user. Block unfriendly incoming IP and Ping.