January 2008
Intermediate to advanced
336 pages
9h 43m
English
Any time you connect to the Internet through a public hot spot, be sure your computer's firewall is active to keep other people from connecting to your computer while you're collecting email, swapping instant messages, or blogging about the current speaker at the conference you're attending.
Both Windows (XP and Vista) and Mac OS X include built-in firewalls, as do all the standard Linux distributions. For more about firewalls and other network security issues related to wireless networks, see Chapter 12.
It's equally important to remember that nonelectronic methods of stealing data can be just as effective as monitoring your wireless signals through another computer. When you send and receive email or instant messages, ...