TCP/IP Networking — A 2 Day Course

 Open Public Course Closed In-House Course

Synopsis

This course introduces the delegate to the main concepts of TCP/IP. It describes the structure of the TCP/IP Protocol suite and the functions and Protocols at each layer.

Course Objectives

To provide the skills necessary for the delegate to design, build and test a small TCP/IP Network, comprising of three subnetworks and two routers. The delegate will learn how to trace and rectify faults on the network.

At the end of the course the delegate will be able to:

• Describe the four layers of the TCP/IP Protocol suite and the functions of each layer
• Identify the needs of, and the purpose of each of the protocols at each layer
• Use and configure each of the common applications used with TCP/IP
• Set up and configure a small network
• Configure a router using static routing and RIP
• Split a network into three subnets
• Use the common network commands to troubleshoot a TCP/IP Network
• Examine a TCP/IP trace at all levels, and diagnose network problems

Intended Audience

Anyone who needs to design and implement a small TCP/IP Network. The course is also suitable for delegates who need an understanding of TCP/IP and are required to maintain a network.

Pre-Requisites

The skills and knowledge required for a delegate to sit this course are as follows

• There are no formal pre-requisites, although knowledge and understanding of UNIX is advantageous, as the course is built around TCP/IP and UNIX.

Publicly scheduled dates, locations, and prices

Contents

Overview of TCP/IP

• Origins of TCP/IP
• Internet and Internetwork
• TCP/IP and the OSI Model
  • Network Interface Layer
  • Network Layer
  • Transport Layer
  • Application Layer
• Communication Using TCP/IP
• Exercise: Installing a NIC
• Exercise: Configuring IP Address and Subnet Mask

Network Interface Layer

• Interface Layer Protocols
  • Ethernet
  • Token Ring
  • Token Bus
  • Fibre (FDDI)
  • Serial Line Interface Protocol (SLIP)
  • Point-to-Point Protocol (PPP)

Network Layer Protocols

• Network Layer Protocols
  • IP
  • ARP/RARP
  • ICMP
  • IGMP
• Internet Protocol (IP)
  • Addressing
  • Classfull IP Addressing
  • Class A Networks
  • Class B Networks
  • Class C Networks
  • Class D and E Networks
  • Summary of IP Addresses
  • Subnet
  • Extended Network Prefix
  • Subnet Mask
  • Subnet Design Considerations
  • Subnet Examples
  • Variable Length Subnet Mask
  • Classless Inter-domain Routing (CIDR)
• Routing Principles
  • Routing Tables
  • Static Routing
• Routing Information Protocol (RIP)
• Open Shortest Path First Protocol (OSPF)
• Internal/External Routing Protocols
  • Interior Gateway Protocol (IGP)
  • Exterior Gateway Protocol (EGP)
• Address Resolution Protocol (ARP)
• Reverse Address Resolution Protocol (RARP)
• Exercise: Exercise on Addressing
• Transmission Control Protocol (TCP)
  • Sockets
  • TCP Port Numbers
  • TCP Header
  • Functions of each Field
• User Datagram Protocol (UDP)
  • UDP Header
  • Functions of each Field
• Summary of TCP and UDP

Application Layer Protocols

• Telnet
  • Client/Server Telnet
  • Telnet Network Virtual Terminal (NVT)
  • Telnet Command
• File Transfer Protocol (FTP)
  • Data Type
  • File Structure
  • Transmission Mode
  • FTP Command Summary
• Simple Mail Transfer Protocol (SMTP)
  • Sender SMTP
  • Receiver SMTP
  • Mail Address
• Domain Name System (DNS)
  • Popular Domains
• Simple Network Management Protocol (SNMP)
• Dynamic Host Control Protocol (DHCP)

Network Security and Remotes Commands

• Network security
  • /etc/hosts.equiv
  • .rhosts
• rlogin - remote Login
• rcp - remote copying of a file
• rsh/rcmd - remote commands over a network
• rwho/rusers - who is on the network
• User commands - Manual Pages
  • finger - display information about local and remote users
  • rcp - remote file copy
  • rlogin - remote login
  • rusers - who is logged in on remote machines
  • rwho - Who is logged in on local machines

NFS and NIS Overview

• Network File System (NFS)
  • NFS Servers and Clients
  • NFS File Systems
• About the NFS Environment
• How NFS Works
• Setting up NFS
  • Servers
  • Clients
  • Mounting File Systems at Boot
  • showmount - Display Remote Mounts
  • share - Make Local Resource available
  • export - Old terminology
• Debugging NFS Systems
  • rpcinfo
• Differences Between NFS and Standard UNIX
  • No su Over a Network
  • Cannot Access Remote Devices
  • Cannot Access Different File Systems
  • Cannot Access Indirect File System
  • Clocks
• Network Information System (NIS)

Important RFCs

• An introduction to some important RFCs.

FTP Trace

• Following a sample FTP Trace taken from a live connection.

TCP/IP Setup and Testing

• A look at common commands used in setting up and testing an IP Network.
• Exercises:
  1. Designing and setting up a network composed of three subnets.
  2. Configuring two routers.
  3. Configure and set up NFS.
  4. Configure and set up the automounter to automatically mount a user's home directory on login.