August 2009
Beginner
512 pages
11h 9m
English
If you use the Internet, make sure you've turned on your firewall. For greater security, enable stealth mode, which essentially makes your Macintosh invisible over the Internet. The idea behind stealth mode is that hackers can't attack your computer if they can't find it.

Figure 54-3. You can selectively determine which programs to block or allow to connect to the Internet.
The other configuration features of the firewall can provide greater security by blocking every program from accessing the Internet except for the handful that you approve. By blocking access to the Internet, the firewall can keep spyware ...