Overview
Wireshark is a free network protocol analyser. This hands-on course provides a comprehensive tour of using Wireshark to troubleshoot networks. The course concentrates on the information needed in order to pass the WCNA exam.
This is an intensive advanced TCP/IP course focusing on the details of the protocols according to the RFCs. This course is designed to go into the technical details of the protocols and is not for those that are new to TCP/IP. A particular focus is on TCP and performance..It is expected that delegates are totally familiar with configuration addressing. Hands on sessions consist of protocol analysis using Wireshark. Wireshark. Networking. IP. Data Comms
Prerequisites
There are no formal prerequisite courses, just a good knowledge of how IP works.
A good suggested course would be TCP/IP foundation for engineers
Delegates will learn how to
By the end of the course delegates will be able to:
- Analyse packets and protocols in detail.
- Troubleshoot networks using Wireshark.
- Find performance problems using Wireshark.
- Perform network forensics.
Outline
What is Wireshark?
Network analysis, troubleshooting, network traffic flows.
Hands on: Download/install Wireshark.
Wireshark introduction
Capturing packets, libpcap, winpcap, airpcap. Dissectors and plugins. The menus. Right click.
Hands on: Using Wireshark.
Capturing traffic
Wireshark and switches and routers. Remote traffic capture.
Hands on: Capturing packets.
Capture filters
Applying, identifiers, qualifiers, protocols, addresses, byte values. File sets, ring buffers.
Hands on: Capture filters.
Preferences
Configuration folders. Global and personal configurations. Capture preferences, name resolution, protocol settings. Colouring traffic. Profiles.
Hands on: Customising Wireshark.
Time
Packet time, timestamps, packet arrival times, delays, traffic rates, packets sizes, overall bytes.
Hands on: Measuring high latency.
Trace file statistics
Protocols and applications, conversations, packet lengths, destinations, protocol usages, strams, flows.
Hands on:Wireshark statistics.
Display filters
Applying, clearing, expressions, right click, conversations, endpoints, protocols, combining filters, specific bytes, regex filters.
Hands on: Display traffic.
Streams
Traffic reassembly, UDP and TCP conversations, SSL.
Hands on: Recreating streams.
Saving
Filtered, marked and ranges.
Hands on: Export.
TCP/IP Analysis
The expert system. DNS, ARP, IPv4, IPv6, ICMP, UDP, TCP.
Hands on: Analysing traffic.
IO rates and trends
Basic graphs, Advanced IO graphs. Round Trip Time, throughput rates.
Hands on: Graphs.
Application analysis
DHCP, HTTP, FTP, SMTP.
Hands on: Analysing application traffic.
WiFi
Signal strength and interference, monitor mode and promiscuous mode. Data, management and control frames.
Hands on:n WLAN traffic.
VoIP
Call flows, Jitter, packet loss. RTP, SIP.
Hands on: Playing back calls.
Performance problems
Baselining. High latency, arrival times, delta times.
Hands on: Identifying poor performance.
Network forensics
Host vs network forensics, unusual traffic patterns, detecting scans and sweeps, suspect traffic.
Hands on: Signatures.
Command line tools
Tshark, capinfos, editcap, mergecap, text2pcap, dumpcap.
Hands on: Command tools.
Frequently asked questions
How can I create an account on myQA.com?
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Find more answers to frequently asked questions in our FAQs: Bookings & Cancellations page.
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When will I receive my certificate?
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