CHAPTER 9How to Secure Your Computer

Linux is widely considered to be one of the most secure operating systems around. On a basic level, Linux is built from the ground up to be fundamentally secure, and it forces users to work with security in mind. For instance, it enforces the system of ordinary users who are limited in what they can do, thus making it harder for virus infections to occur.

In addition, Linux contains a firewall that is hard-wired into the kernel. It's called iptables and is developed by the netfilter project (www.netfilter.org). It's considered among the best of all available solutions. Not only that, but it can protect your home PC just as well as it can protect the most powerful supercomputer.

In this chapter, you'll be ...

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