Chapter 4. Going Wireless
"Freedom always comes at a price" | ||
--Samir Datt |
Today, people desire to be free from the restraining and restricting wires. Always connected and always online, the growth of this desire has fueled the proliferation of wireless networks. Who doesn't have Wi-Fi at home or at their place of work? Our phones are connected using Wi-Fi, our tablets are connected over Wi-Fi and with the advent of the Internet of Things (IoT), even our household devices are connected over Wi-Fi or will be in the future!
However, the freedom of a wireless existence comes at a price. Wireless networks broadcast a signal that is open to the air. With no physical limitations except those of range, this signal is open to interception and interpretation by the bad guys.
In the previous chapters, we saw how information travels in packets over the network physical layer. In wireless LAN networks, the data packets are broadcast wirelessly over the air. The...