1. Wireless Security
By: Bryan M Keller

2. Outline Wireless Overview Importance of Wireless Security
Methods of Securing a Wireless Network
WarDriving

3. What is Wireless? Wireless Local Area Network (WLAN)
Similar to a Local Area Network
IEEE x Standard (2.4Ghz)
Radio Frequency Communication (RF)
Range ≈ 150ft – 200ft
802.11b (11 Mbit/s), g(54 Mbit/s), n(540 Mbit/s)

4. Basic WLAN Setup

5. Importance of WLAN Security
Bandwidth Usage
Illegal Activities
Access to Network Devices
Printers, Servers, etc.
Access to Shared Files and Folders
Intercepted Data
Passwords, s, Credit Card Information, etc.

6. Methods of Securing a WLAN
Change Default SSID
Disable SSID Broadcasting
Enable WEP/WPA Encryption
Enable MAC Filtering
Change Default Passwords
(Example with a Linksys WRT54G Wireless Router)

7. Change Default SSID

8. Disable SSID Broadcasting

9. Enable WEP/WPA Encryption

10. Enable MAC Filtering
MAC address filtering may not be always be feasible based on the number of wireless clients.

11. Change Default Passwords

12. WarDriving
Definition: To drive around with a laptop with a wireless card, looking for accessible wireless networks.

13. WarDriving cont. Tools Needed: Wireless Enabled Laptop
Netstumbler or Other software
Handheld GPS Receiver (optional)
Antenna (optional)

14. Map of Indiana, PA (Unsecured Wireless Networks)

15. WarDriving cont.
Warchalking - drawing symbols in public places to advertise an open Wi-Fi wireless network.

16. Conclusion Wireless Networking Wireless Security
Methods of Securing a WLAN
WarDriving