March 2021
Intermediate to advanced
400 pages
14h 24m
English
Content preview from Wireless and Mobile Device Security, 2nd Edition
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Packet Analysis
Packet analysis is the practice of capturing and deciphering packets being transmitted across the air interface. There are several freely downloadable open source packet analyzers. One of the most popular is a wireless knockoff of the Ethernet Wireshark called Airshark. (Airshark is not affiliated with the Wireshark tool.)
A packet analyzer works in a wireless environment slightly differently than on a wired network segment. On an Ethernet switch, for example, a probe—typically a cable plugged into the network interface card on a PC or laptop—captures all the packets on that port that are destined for that MAC address and all broadcasts for the entire segment. However, this isn’t of much use because the network card must be programmable ...