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Wireless Network Analysis
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Course Duration: 5 days
Course Code: PDN
Course Description:
A 5-day Training Course on Wireless Network Analysis; Learn wireless network analysis methodology, understanding 802.11 protocols, and attenuation.
Prerequisites:
Anyone involved in wireless networking, including, Network Managers, Network Engineers, Network
Administrators, Network Infrastructure Managers and Network Infrastructure Engineers.
This course includes the following modules:
Perspective on wireless LAN technology
- Wireless terminology
- Major wireless standards/Wireless application architectures
- Similarities and differences between wired and wireless LANs
802.11 Network Architecture
- 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
- Gathering and interpreting real-time network performance statistics
- Post-capture statistical analysis
Analyzing Node Statistics
- Create and analyze a top talkers/receivers report
- Identifying Access Points and Stations
- Naming stations for clarity
Analysis of Protocols
- 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
- Viewing individual frames' headers and data
- Interpreting common fields in headers
Analysing Specific Conversations
- Troubleshooting based on application architecture
- - Terminal/Host
- - Client/Server
- - Peer-to-Peer
- Quick filtering with Select Related
- Basic TCP analysis
Analysing Related Network Activities
- Ethernet and 802.11 frame formats
- Making and applying simple filters
Advanced Filtering
- Creating advanced filters
- Applying advanced filters to 802.11 analysis
- - Filtering out corrupted frames
- - Filtering based on SSID
802.11 MAC Layer
- 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
- 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
- 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
- Antenna types
- Site interference map
- Evaluating wireless performance levels
Active Testing Methods for TCP/IP networks
- Quick access to commonly used tools by customizing the Tools menu
Tracking packet flow
- 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
- 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
- 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
- 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
- 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
To make an enquiry for this course to be run ONSITE at your location, click here or call Sales on +44 (0) 20 7620 0033.
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