Practical TCP/IP Troubleshooting & Problem Solving for Industry

WORKSHOP OBJECTIVES

At the end of this workshop participants will be able to:

  • Have a clear practical understanding of what TCP/IP is and how to apply it
  • Understand and be able to construct a secure robust Local Area Network
  • Learn how to plan and design your networks better
  • Be able to analyse and construct a typical firewall
  • Have developed the basic skills to effectively troubleshoot TCP/IP and LAN’s
  • Know how to apply the web to industrial technologies
  • Optimise your company’s connectivity with LAN’s/Intranets and the internet
  • Know how to construct a basic Internet
  • Apply the appropriate network management tools
  • Learn how to troubleshoot TCP/IP networks
  • Fault find at the Ethernet /IP/TCP and application levels
  • Appreciate and understand the essentials of network management
  • Learn how to track hackers and network problems

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?

If you are using any form of communication system, or are applying modern PLC’s/SCADA systems, this workshop will give you the essential tools in working with your networks.  It is not an advanced workshop – but a hands-on one focused on troubleshooting and problem solving.

Anyone who will be designing, installing and commissioning, maintaining or troubleshooting TCP/IP and Intra/Internet sites will benefit including:

  • Design engineers
  • Electrical engineers
  • Engineering managers
  • Instrumentation engineers
  • Network engineers
  • Network system administrators
  • Technicians

CONTENT SUMMARY

INTRODUCTION

  • Terms and definitions
  • LANs, WANs, VLANs and VPNs
  • Open Systems Interconnection (OSI) and ARPA models

ETHERNET

  • Fundamentals
  • 10Mbps Ethernet systems
  • Fast and gigabit Ethernet
  • Collisions and performance
  • Full duplex, deterministic and dual-redundant Ethernet

INTERNET LAYER PROTOCOLS (IP)

  • IPv4
    • Addressing
    • Subnetting
    • Supernetting and CIDR
    • Fragmentation
    • Header structure
    • ARP
    • ICMP
    • Routing protocols
  • IPv6
    • Addressing modes
    • Header structure
    • Extension headers

HOST-TO-HOST PROTOCOLS (TCP)

  • TCP
    • Ports and sockets
    • Sequence and acknowledgement numbers
    • Establishing and closing connections
    • Sliding windows
  • UDP

PROCESS/APPLICATION LAYER PROTOCOLS

  • BOOTP, DHCP, TELNET, FTP, TFTP, SMTP, POP3, HTTP, SNMP, DNS

TCP/IP UTILITIES

  • Ping, arp, tracert, netstat, ipconfig, winipcfg, hosts, lmhosts

CONNECTION DEVICES

  • Repeaters, hubs, bridges, switches, routers, gateways

SECURITY CONSIDERATIONS

  • Authentication
  • Routers
  • Encryption
  • Firewalls

INTRODUCTION TO CONFIGURING AND TROUBLESHOOTING OF ETHERNET AND TCP/IP

  • Configuration
  • Use of TCP/IP and third party utilities
  • Use of protocol analysers

SATELLITE COMMUNICATIONS

  • Essentials of satellites
  • Challenges with TCP/IP

VLANS

  • VLAN concept
  • IEEE802.3 p/Q
  • Tagging

VPNs

  • VPN concept
  • VPN protocols      

TYING IT ALL TOGETHER

  • Current and future trends
  • Critical areas of focus

PRACTICAL SESSIONS THUS FAR

  • Construction of simple hub-based Ethernet LAN
  • IP configuration (IP addresses and subnet masks)
  • Use of ping utility
  • Observation of ARP operation
  • Analysis of ICMP/IP/UDP/TCP
  • Tracert and route commands
  • Analysis of HTTP or FTP sessions with protocol analyser
  • Use of the ‘hosts’ file
  • Using a bridge (2-port switch) to segment a network
  • Replacing hubs with switches
  • Using a PC as a router

NB. From this point on, the class is 100% hands on.

TROUBLESHOOTING THE MEDIUM

  • Fibre 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

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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