O'Reilly logo

The Book of PF, 2nd Edition by Peter N.M. Hansteen

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 6. Turning the Tables for Proactive Defense

image with no caption

In the previous chapter, you saw how you might need to spend considerable time and energy making sure that the services you want to offer will be available even when you have strict packet filtering in place. Now, with your working setup in place, you will soon notice that some services tend to attract a little more unwanted attention than others.

Here’s the scenario: You have a network with packet filtering to match your site’s needs, including some services that need to be accessible to users from elsewhere. Unfortunately, when services are available, there is a risk that someone will want to ...

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