Course benefits
This unique course provides detailed, hands-on instruction in the planning, implementation and security of 802.11 series wireless networks.
Who should attend?
IT professionals wanting to move into the rapidly growing wireless networks industry; network planners, network designers; security managers, security auditors; IT management; anyone concerned with the security of their organisation.
Objectives
On completing this course, you wll be able to:
- Explain the fundamental principles used in wireless LANs, making students more effective in WLAN problem analyse & troubleshooting.
- Install and configure wireless networks using wireless NICs, access points, gateways and antennas.
- Understand the problems that can occur with wireless LAN data transmission, including multipath, hidden nodes, and interference.
- Perform a basic site survey for the installation of a wireless LAN, and explain what needs to be taken into consideration.
- Explain the insecurities in IEEE 802.11 WLANS and list the techniques that can be used to secure them.
Certification
Course 615 - Certified Wireless Network Administrator (CWNA) - provides an alternative track to courses 610 and 611, specifically for those seeking CWNA certification.
Pre-requisites
Students must have a fundamental understanding of Ethernet LANs and TCP/IP protocols. Practical experience with a Microsoft Windows operating system, or UNIX, is also required.
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Course 610: Content
Introduction to Wireless LANs
The Wireless LAN market
Wireless terminology
The applications of Wireless LANs
Wireless LAN organisations
RF Fundamentals
RF behaviour
WLAN antennas
Power output regulations
Basic RF calculations
Spread Spectrum technologies
Uses of Spread Spectrum
Frequency Hopping
Direct Sequencing
Co-location and throughput
802.11 Infrastructure Devices
Access points
Wireless Repeaters
Client devices
Wireless bridges
Workgroup bridges
Residential gateways
Enterprise wireless gateways
Antennas and Accessories
Omni/Semi/Directional
Determining coverage areas
Antenna mounting and safety
Performing outdoor and indoor installations
Power over Ethernet (PoE)
Wireless Standards
FCC rules
ETSI / UK rules
Frequency ranges and channels
Emerging IEEE 802.11 standards
802.11 Network Architecture
Joining a wireless LAN
Authentication and association
Roaming in a wireless network
Beacons and Probe frames
Power management features
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Physical and MAC Layers
802.11 medium access scheme
Management, Control and Data frames
DCF, PCF
Interframe spacing
RTS/CTS
Fragmentation
Throughput and dynamic rate selection
Troubleshooting Wireless LANs
Understanding multipath
Hidden nodes
Near/Far issue
Identifying and resolving interference problems
Maximising system throughput
Maximising Co-location throughput
Channel reuse for roaming
Range considerations
Wireless LAN Security
Analysis of 802.11 security
Understanding access point security
The insecurity problems with WEP
Cracking WEP security
Available security solutions
Security best-practice and recommendations
802.11 Site Survey
Defining business requirements
Facility analysis
Identifying bandwidth requirements
Determining RF coverage
Locating interference
Documenting installation problems
Reporting methodology and procedures
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