Wireless Infrastructure Security

(OBJ .)

Wireless Infrastructure Security

• Crucial for securing wireless networks in organizations
• Placement of Wireless Access Points (WAPs) impacts network performance and security

Wireless Access Point Placement

• WAPs allow wireless devices to connect to a wired network using Wi-Fi standards
• Placement influences
  • Network range
  • Coverage
  • Security
• Proper placement prevents unauthorized access by limiting signal leakage or dead zones
• Is a huge concern in terms of the security of the wireless network

Placement Considerations

• Avoid placing WAPs near external walls or windows to prevent signal leakage
• Place WAPs in central locations for optimal coverage
• Use unidirectional antennas when WAPs are near external walls
• Mount WAPs on higher locations, such as ceilings, for better coverage

Extended Service Set (ESS)

• Multiple WAPs work together to provide seamless network coverage
• Important for large buildings where a single WAP is insufficient

Wireless Access Point Interference

• Interference occurs when multiple WAPs use the same channels or overlapping frequencies
• Types
  • Co-Channel Interference
  • Adjacent Channel Interference
• In the 2.4 GHz band, select Channels 1, 6, and 11 to avoid overlap

Tools for ensuring good Wireless Access Point Coverage

• Site Surveys
  • Essential for planning and designing wireless networks
  • Involves a site visit to test for radio frequency interference and identify optimal WAP installation locations
• Heat Maps
  • Graphical representations of
    • Wireless coverage
    • Signal strength
    • Frequency utilization
  • Useful for troubleshooting
    • Coverage issues
    • Dead zones
    • Signal leakage
  • Aid in visualizing the effectiveness of WAP placement and configuration