Wireless Security By Bryan M Keller Outline Wireless
Wireless Security By: Bryan M Keller
Outline • • Wireless Overview Importance of Wireless Security Methods of Securing a Wireless Network War. Driving
What is Wireless? • Wireless Local Area Network (WLAN) – Similar to a Local Area Network • IEEE 802. 11 x Standard (2. 4 Ghz) • Radio Frequency Communication (RF) – Range ≈ 150 ft – 200 ft
Basic WLAN Setup
Importance of WLAN Security • Bandwidth Usage • Illegal Activities • Access to Network Devices • Printers, Servers, etc. • Access to Shared Files and Folders • Intercepted Data • Passwords, E-mails, Credit Card Information, etc.
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 WRT 54 G Wireless Router)
Change Default SSID
Disable SSID Broadcasting
Enable WEP/WPA Encryption
Enable MAC Filtering MAC address filtering may not be always be feasible based on the number of wireless clients.
Change Default Passwords
War. Driving Definition: To drive around with a laptop with a wireless card, looking for accessible wireless networks.
War. Driving cont. Tools Needed: – Wireless Enabled Laptop – Netstumbler or Other software – Handheld GPS Receiver (optional) – Antenna (optional)
Map of Indiana, PA (Unsecured Wireless Networks)
War. Driving cont. Warchalking - drawing symbols in public places to advertise an open Wi-Fi wireless network.
Conclusion • • Wireless Networking Wireless Security Methods of Securing a WLAN War. Driving
- Slides: 16