Practical Troubleshooting of TCP/IP Networks

THE WORKSHOP

This is a hands-on workshop in the true sense of the word, where you will spend over 70% of the course time in setting up and troubleshooting TCP/IP-based networks. We have distilled all the practical tips and tricks in maintaining and troubleshooting TCP/IP networks into this intensive two-day workshop.

Commencing with a simple introduction to the hardware level of Ethernet, you will quickly move onto coverage of the Internet (IP) layer. The Host-to-Host (TCP) layer also be covered in considerable practical detail. The application layer of the TCP/IP protocol suite will be covered by a detailed examination of protocols such as BOOTP, DHCP and SNMP. The simple but vital TCP/IP utilities such as Ping, Arp and Tracert will then be tested out on the network.

Finally, you will construct a virtual LAN and virtual private network, and configure a simple firewall. One of the best ways to learn and retain your knowledge is with hands-on sessions where you will gain a broad range of skills that every competent network engineer needs in his skills toolbox. We believe this workshop provides the required know-how.

WHAT IS INCLUDED?

  • Receive a certificate of attendance in support of your continuing professional commitment
  • All workshops include the associated hardcopy technical manual
  • Printed workshop handouts
  • Lunch and refreshments
  • Interact and network with workshop attendees and experienced instructors
  • Practical, industry driven content to assist you in your continuing professional development (CPD)
  • Attendees automatically become IDC subscribers and receive exclusive deals and technical content every month

WHO SHOULD ATTEND?

  • Communications specialists
  • Data communications managers
  • Designers
  • Design engineers
  • Electrical engineers
  • IT and MIS managers
  • IT support managers and personnel
  • Network administrators
  • Network engineers
  • Network planners
  • Network technicians
  • Network support staff
  • Programmers
  • System analysts
  • Systems engineers
  • System integrators

CONTENT SUMMARY

NETWORKING BASICS (OVERVIEW)

  • OSI model
  • Ethernet
  • TCP/IP protocol suite
  • Internet layer (OSI layer 3) protocols: IP, ARP, ICMP
  • Host-Host layer (OSI layer 4) protocols: TCP, UDP
  • Application layer (OSI layer 5/6/7) protocols: FTP, HTTP, Telnet
  • Network components

TOOLS

  • DOS utilities
  • Windows utilities (IP scanners, port scanners, route tracers)
  • Protocol analysers

NETWORK CONSTRUCTION

  • Constructing a simulated wide area network simulation with hubs, switches and routers
  • Setting up cisco routers
  • Setting up managed switch
  • Setting up DHCP and BOOTP servers
  • Configuring IP  

BASIC SYSTEM CHECKS

  • Host configuration (ipconfig, wntipcfg)
  • Router configuration
  • Switch configuration
  • Connectivity (ping, arp, tracert)
  • Name resolution (hosts file, NetBIOS name resolution)

TROUBLESHOOTING THE MEDIUM

  • Fiber connectivity
  • Cat5 connectivity (damaged and mis-wired cabling)

TROUBLESHOOTING AT LAYER 2

  • Ethernet packet analysis
  • Checking Ethernet NIC driver configuration
  • Detecting duplicate MAC addresses

TROUBLESHOOTING AT LAYER 3

  • Checking stack operation (loop-back test)
  • Connectivity checking (ping, trace) between subnets
  • Pinging and tracing via router (Telnet)
  • Packet debugging via router (Telnet)
  • Tracing Ethernet packet contents between subnets
  • Detecting duplicate IP addresses
  • Effect of incorrect subnet masks
  • Effect of incorrect routing tables
  • Automatic IP address allocation (DHCP server down)
  • Faulty WINS resolution
  • Inability of application programs to resolve NetBIOS names
  • Checking router CPU resources and ACLs

TROUBLESHOOTING AT LAYER 4

  • Checking TCP connections
  • Observing TCP sequence numbers and acknowledgements
  • Checking open connections on hosts
  • Scanning ports on network
  • Checking TCP/UDP delay and data rate between hosts on WAN

INTERNET CONNECTION

  • Setting up NAT router
  • Testing internet uplink/downlink performance
  • Ping and tracing across the internet (DOS and Windows utilities)

HACKING TOOLS

  • Cain and Abel (packet diversion and analysis, password cracking)

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