O'Reilly logo

Networking For Dummies, 10th Edition by Doug Lowe

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 22

Hardening Your Network

In This Chapter

arrow Understanding what firewalls do

arrow Examining the different types of firewalls

arrow Using the built-in Windows firewall

arrow Looking at virus protection

arrow Patching your computers

If your network is connected to the Internet, a whole host of security issues bubble to the surface. You probably connected your network to the Internet so that your network’s users could get out to the Internet. Unfortunately, however, your Internet connection is a two-way street. Not only does it enable your network’s users to step outside the bounds of your network to access the Internet, but it also enables others to step in and access your network.

And step in they will. The world is filled with hackers who are looking for networks like yours to break into. They may do it just for the fun of it, or they may do it to steal your customer’s credit card numbers or to coerce your mail server into sending thousands of spam messages on their behalf. Whatever their motive, ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required