Wireless Network Analysis

5 Day Course
Hands On
Official Curriculum
Code PDN

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Scheduled Online Onsite

Modules

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Perspective on wireless LAN technology (3 topics)

  • Wireless terminology
  • Major wireless standards/Wireless application architectures
  • Similarities and differences between wired and wireless LANs

802.11 Network Architecture (4 topics)

  • The Basic Service Set (BSS)/Joining a BSS (Association)
  • The Independent BSS (IBSS)/The Extended Service Set (ESS)
  • The Distribution System
  • ESS and BSS Ids/Portals and Access Points

Quick Assessment of the Network (2 topics)

  • Gathering and interpreting real-time network performance statistics
  • Post-capture statistical analysis

Analyzing Node Statistics (3 topics)

  • Create and analyze a top talkers/receivers report
  • Identifying Access Points and Stations
  • Naming stations for clarity

Analysis of Protocols (3 topics)

  • Setting display options for maximum effectiveness
  • The effect of logical and physical addressing on protocol analysis
  • Troubleshooting common conversation problems

Analysis of Internal Protocol Behaviour (2 topics)

  • Viewing individual frames' headers and data
  • Interpreting common fields in headers

Analysing Specific Conversations (6 topics)

  • Troubleshooting based on application architecture
  • Terminal/Host
  • Client/Server
  • Peer-to-Peer
  • Quick filtering with Select Related
  • Basic TCP analysis

Analysing Related Network Activities (2 topics)

  • Ethernet and 802.11 frame formats
  • Making and applying simple filters

Advanced Filtering (4 topics)

  • Creating advanced filters
  • Applying advanced filters to 802.11 analysis
  • Filtering out corrupted frames
  • Filtering based on SSID

802.11 MAC Layer (7 topics)

  • Similarities/differences between 802.11 and traditional wired MAC layers
  • Examples of 802.11 MAC frames and how to analyze them
  • Probes and Beacons
  • Authentication/Deauthentication
  • Association/Disassociation /Reassociation
  • Expected frames at station startup
  • Tracking station movement with MAC frames

Expert Analysis (7 topics)

  • When to use expert analysis vs. nonexpert analysis
  • Expert troubleshooting methodologies
  • When you have a suspect station
  • When you don't have a suspect station
  • Analyzing latency and throughput with the expert
  • Customizing expert thresholds and settings
  • Troubleshooting with the Peer Map

Radio Frequencies and Channels (10 topics)

  • Radio frequency basics
  • RF regulation
  • Factors affecting RF reception
  • Attenuation
  • Interference
  • Frequency ranges and channels
  • Spread spectrum technologies in 802.11
  • Frequency Hopping (FHSS)
  • Direct Sequence (DSSS)
  • Assessing the results of channel surfing during capture

Antenna Placement (3 topics)

  • Antenna types
  • Site interference map
  • Evaluating wireless performance levels

Active Testing Methods for TCP/IP networks (1 topic)

  • Quick access to commonly used tools by customizing the Tools menu

Tracking packet flow (3 topics)

  • The effect of routers on a capture
  • Drawing a packet flow diagram from a trace file
  • Detecting local router conditions

Wireless and Wired LAN Integration (7 topics)

  • Aggregation of machines in a network
  • Networks
  • Broadcast Domains
  • The effect of wireless LANs on aggregation
  • Common misconfigurations when integrating wired and wireless LANs
  • VLANs and their relationship to BSSs and ESSs
  • Four common solutions for WLAN integration

802.11 Physical Layer (4 topics)

  • Organization of the 802.11 physical layer
  • 802.11 signal encoding methods
  • Relationship of signal encoding to data rate
  • Two common problems at the physical layer

Data Transmission (9 topics)

  • 802.11 Access Methods
  • CSMA/CA (Distributed Coordination)
  • CF-Polling (Point Coordination)
  • Why not CSMA/CD?
  • The "hidden node" problem and its solutions
  • Network Allocation Vector (NAV)
  • Request To Send/Clear To Send (RTS/CTS)
  • Interframe Spacing
  • Backoff algorithm

Wireless Security (11 topics)

  • Why wireless networks are insecure
  • 802.11 built-in security methods and their weaknesses
  • WEP
  • SSIDs
  • MAC access lists
  • Other security methods
  • IPSec
  • Cisco LEAP
  • 802.1x EAP
  • Third-party VPNs

Prerequisites

Anyone involved in wireless networking, including, Network Managers, Network Engineers, Network Administrators, Network Infrastructure Managers and Network Infrastructure Engineers.

What Our Customers Say

The training was delivered with a high level of expertise and excellence. Instructor was highly knowledgeable.”

Technical Trainer, Aviat Networks

Overall the course was really good, the trainer really understood the material and was very approachable.”

Customer Training Manager, Aviat Networks

Excellent course, informative and well-paced.”

CSE, Cisco

Course was very well outlined. Topics were great and bridged many gaps.”

System Engineer, Cable & Wireless

An excellent intro to video encoding & MPEG transport streams - I would definitely recommend it.”

Broadcast Engineer, Cisco

Definitely an excellent intro. Left me interested in learning more.”

Broadcast Engineer, Eircom

Excellent training course with real examples and practical classroom demonstrations.”

Transport Designer, Orange

Instructor knowledge and experience was excellent.”

Solutions Engineer, Akamai

Excellent course, very clear and well organised. Course content delivery was very good.”

Assistant Engineer, Dhiraagu

Very informative and appropriate.”

Network Support Technician, BT

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