1. Wireless Network Securityby
Joseph A. D’Imperio

2. Layers Passwords Antivirus RF Sensors Door Locks Network Policies
Standoff Distance
Information

3. Authorization Alphabetical Password Proximity Card Biometric
Fingerprint
Face
Hand
Iris
Retina
Voice

4. Implementation Service Set Identifier (SSID)
Wired Equivalency Protocol (WEP)
Wi-Fi Protected Access Point (WPA)
802.11i
MAC Address Filtering

5. Service Set Identifier (SSID)
Alphanumeric label that separates and identifies one wireless LAN from another.
Do not set SSID to broadcast
Do not set SSID value as something easy to guess

6. Wired Equivalency Protocol (WEP)
Provides Data encryption
Casual attacker receives indecipherable messages
More committed attacker can/will crack encryption code
Static Encryption Key

7. Wi-Fi Protected Access Point (WPA)
Provides data encryption
A motivated attacker who cracks the key will soon be forced to start over
Dynamic encryption key

8. 802.11i A.K.A. WPA2 Implies many of the same standards as WPA
Uses more advanced encryption standards
Handles encryption keys more securely

9. MAC Address Filtering Restricts certain computers to network access
Not practical for large companies

10. Policies Position of wireless routers/access points
Change WEP key on a regular basis
Only use access points that are capable of filtering MAC address
Limit access time
Limit the number of user addresses

11. Policies
Secure your wireless router or access point administration interface
Don't broadcast your SSID
Enable WPA encryption instead of WEP
Reduce your WLAN transmitter power
Disable remote administration

12. Policies Create Backups Attack your own network Vulnerabilities
Weaknesses
Backdoors
What to expect if a real attack should occur

13. Example of a Wireless Network

14. Example of a Wireless Network

15. References
(2007). WiFi manager distributed intrusion detection system. Retrieved October 7, manager/intrusion-protection- system.html?adwords31&gclid=CMGZv5-Jgo8CFQJsPAod_QKH2g
Ciampa, M. (2005). Security Basics. In W. Pitkin. (Ed.) Security guide to network security fundamentals (pp ). Boston, Massachusetts: Course Technology.
Karagiannis, K. (2003). Ten steps to secure a wireless network [Electronic Version]. Retrieved October 7, 2007, from
Tomsho, G., Tittle, E., Johnson, D. (2007). Guide to networking essentials (W. Pitkin, Ed.). (pp. 51, 92-94, , ). Boston, Massachusetts: Course Technology.

16. The End
Questions?