Learn some effective paranoia

If you are using a local machine and are not currently using a personal firewall, then this is a book you must read. Furthermore, if you believe your security worries are over because you are running a firewall, then you also must read this book.
The role of firewalls in computer security is only one of the topics covered. Other points are the limitations of firewalls, some of the tactics used by hackers to break into systems and how some of the features of firewalls are implemented. These topics are critical to the effective use of a firewall in the securing of a personal system. Like most other instances of complex technology, it is necessary to understand some of the inner workings of firewalls if you are to use them efficiently. Also, this will help you understand the security holes that they do not cover, or may not cover if improperly configured. In many ways, this is the most important information found in the book.
In computer security, a false sense of security is the worst position to be in. To have any valid sense of security, you must also be paranoid, trusting no one and no thing until proven otherwise. After reading this book, you will still be paranoid, even after installing a firewall. However, at least now you will know many of the things that you should be paranoid about.

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