Chapter 5 Flashcards
802.11a
provides wireless LAN bandwidth of up to 54 Mbps at 5GHz frequency
169
802.11b
bandwidths up to 11Mbps at 2.4GHz frequency
169
802.11g
bandwidths up to 54Mbps at 2.4 GHz frequency
170
802.11i
provides for security enhancements to the wireless standard with particular focus on authentication. The standard is often referenced as WPA2, the name given to it by the Wi-Fi Alliance
170
802.11n
bandwidths up to 600 Mbps (theoretical) can operate at either 5Ghz or 2.4 GHz
170
Bluesnarfing
Gaining of unauthorized access through a Bluetooth connection. Can be accessed through a smartphone. Allows hackers to copy data
Site survey
determines what types of systems are in use, the protocols used, and other critical info about your network
War Driving
Driving around town with a laptop in promiscuous mode looking for open WAPs
185
War Chalking
Once someone discovers an open network, they will leave signals in the real world so other people can hack into the system
185
LEAP
Lightweight Extensible Authentication Protocol
Created by Cisco as a quick fix to WEP’s incompetencies
Still considered a weak solution to the problem
182
PEAP
Protected Extensible Authentication Protocol
Replaced LEAP. Supports all Windows operating systems since XP. Establishes an encrypted channel between server and client
182
WPS
Wifi Protected Setup
Usually requires the user to do something (often physical) to complete the enrollment process
182
WPS Attacks
Brute Force attacks used to guess a user’s PIN. Once they guess it you’re screwed
182
NFC
Near Field Communication
Requires a user to bring the client close to the AP in order to verify that the device is present. Like bumping phones
EAP
Extensible Authentication Protocol
Framework for authentication that is often used with wireless networks
181
Types of EAP
EAP-TLS EAP-PSK EAP-MDS LEAP PEAP 181
Captive Portal
Requires users to agree to some condition before they use the network or Internet. They must agree on some condition
180
Antenna Types
Omnidirectional - signal all direction
Directional - Focuses signal in one direction. It can often reach farther
178
Gain Value
Way of rating an antenna expressed in dBi
Network Lock
Another way of saying MAC filtering
WAP security level
Anonymous Authentication
Allows anyone to connect to a portal
WAP security level
Server Authentication
Requires the workstation to authenticate against the server
WAP security level
Two-way Authentication
Requires both the client and the server to authenticate the mobile system’s network
WSP
Wireless Session Protocol
manages the session information and connection between the devices
175
WTP
Wireless Transaction Protocol
provides similar services to TCP/UDP for WAP
175
WTLS
Wireless Transport Layer Security
The security layer of WAP
175
WDP
provides the common interface between devices
175
WTLS
Wireless Transport Layer Security
Security layer of WAP. Provides authentication, encryption, and data integrity
173
CCMP
Counter Mode with Cipher Block Chaining Message Authentication Code Protocol
uses 128-bit AES with 48-bit initialization vector. Increases difficulty of cracking and minimizes risk of replay attack
172
