Guardians at the Gate: Firewalls

  • Dan Appleman


You’ve just learned about antivirus programs—the first of the three tools you have available to protect your computer. But you also learned that antivirus programs aren’t perfect. Many of their imperfections originate with one obvious fact—an antivirus program can only look at files that are already on your computer. Even though they can do a good job of detecting those files and preventing them from running, the file is nevertheless on your system, which poses some risk.


Internet Connection Network Address Translation Incoming Request Cable Modem Outgoing Connection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Apress 2004

Authors and Affiliations

  • Dan Appleman

There are no affiliations available

Personalised recommendations