An Introduction to TCP/IP

Overview
TCP/IP is the dominant networking protocol. Currently most TCP/IP networks are using IPv4 and this is the version covered in this course. Note that IPv6 is covered in course C814.
The purpose of this course is to provide a comprehensive understanding of all the protocols that make up TCP/IP, how they fit together, and what their strengths and limitations are. With such an understanding students will be in a much better position to tackle/manage network configuration, administration, security and management tasks.
Bonus! Attendees receive a copy of the book: "Practical TCP/IP - Designing , Using and Troubleshooting TCP/IP Networks on Linux and Windows" by Niall Mansfield.

Key Skills

• Understanding how TCP/IP can run over various link layer protocols (such as ethernet, token ring, ATM, serial links such as ISDN, dialup modem, ADSL, and Frame Relay)
• Knowledge of static vs. dynamic IP address configuration and related protocols - ARP, ICMP, PING, DHCP)
• Classful addressing
  • subnet masking (fixed and variable length)
  • private IP addresses
  • Network Address Translation
• Appreciation of the differences between distance vector, link state and path vector protocols
• Distinction between connection oriented and connectionless protocols
• Awareness of how important protocols such as FTP, HTTP, DNS and SMTP work

Course Contents
IP - the TCP/IP network layer protocol and related protocols

• services provided by IP
• IPv4 addresses
• subnet masks and how to assign subnet masks to networks
• private vs. public IP networks
• ARP (address resolution protocol)
• DHCP (dynamic host configuration protocol)
• routers and and overview of routing protocols
  • distance vector (RIP, RIPv2, IGRP)
  • link state (OSPF)
  • path vector (BGP)
• ICMP (internet control message protocol) and PING

Transport layer protocols - TCP and UDP

• TCP- three way handshake
• TCP - flow control and keep alive mechanisms
• TCP - positive acknowledgement, timeout and retransmit mechanism
• TCP - connection takedown
• TCP and UDP Port numbers
• Overview of the Unix Sockets and WinSock APIs

Application layer protocols

• FTP and TFTP
• Telnet
• DNS
• HTTP
• SNMP, RMON and RMON2
• SMTP, POP 3 and IMAP

Overview of Security and other advanced topics

• Denial of Service (DoS) attacks
• Vulnerabilities associated with FTP and Telnet
• Encryption and its applications
• SSH
• SSL and TLS
• IPSec
• Firewalls
• Proxy servers
• Intrusion detection
• Kerberos
• PKI
• Directory Services - LDAP