Wireless Security By: Bryan M Keller.

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Presentation transcript:

Wireless Security By: Bryan M Keller

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

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

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 WRT54G 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

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

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

Map of Indiana, PA (Unsecured Wireless Networks)

WarDriving 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 WarDriving