The document provides an overview of computer networking concepts including terminology, network technologies and architectures, operating systems, IP addressing and domains, and internet services. It defines common networking terms like client, server, LAN, WAN, and network topologies. It also describes network protocols like TCP/IP, IPX/SPX, and NetBEUI. Finally, it discusses network operating systems, IP addressing schemes, DNS, and common internet services.

1. Networking Overview CTIN February 10, 2000 Sandy Bacik, Senior Security Consultant Breakwater Security Associates

2. Agenda Terminology Network technologies and architectures Operating systems IP addresses and domains Internet

3. Terminology Server Client A computer on the network BUT shares resources A computer on the network BUT uses the shared resources

4. Terminology NIC Network Interface Card, network adaptor LAN Local Area Network, physical cable limitation of 500-600 feet

5. Terminology WAN Wide Area Network MAN Metropolitan Area Network

6. Types of Networks Peer-to-Peer Server Based

7. Peer-to-Peer

8. Server-Based

9. Network Topologies Bus Star Ring Combination: Star Bus Star Ring Mesh

10. Bus Network Topology

11. Star Network Topology

12. Ring Network Topology

13. Star Bus Network Topology

14. Star Ring Network Topology

15. Mesh Network Topology

16. Network Architecture Ethernet Token Ring ARCNet AppleTalk FDDI

17. Network Protocols TCP/IP IPX/SPX NetBEUI

18. Reference Model

19. TCP/IP related to OSI stack

20. IPX/SPX related to OSI stack

21. NetBEUI related to OSI stack

22. TCP Session Setup Session setup using 3-way handshake

23. TCP Session Termination Aborting a connection (reset)

24. UDP Packet Header information Source Port Destination Port Datagram Length Checksum

25. TCP Packet Header information Source Port Destination Port Sequence Number Acknowledgement Number Header Length Flags Window Advertisement Checksum Urgent Pointer

26. Network Operating Systems Novell Netware Windows NT UNIX

27. IP Addresses 192 . 168 . 124 . 123 http://www.cisco.com/univercd/cc/td/doc/product/software/ssr90/ptc_r_90/54084.htm

28. Request for Comments (RFC) http://www.rfc-editor.org/rfcsearch.html Use search engines to look for specific RFCs or topics for an RFC

29. Subnet Masking 255.0.0.0 Class A 255.255.0.0 Class B 255.255.255.0 Class C

30. DNS Top-Level Domains .com .edu .gov .mil .net .org .int . xx

31. Internet Services WWW Electronic Mail FTP Newsgroups Telnet Gopher

32. Thank you Contact: Sandy Bacik email: san04@att.net phone: 253-661-9327