As you begin to use Kali Linux for increasingly sensitive and higher-profile work, you will likely
need to take the security of your installation more seriously. In this chapter, we will first discuss
security policies, highlighting various points to consider when defining such a policy, and outlin-
ing some of the threats to your system and to you as a security professional. We will also discuss
security measures for desktop and laptop systems and focus on firewalls and packet filtering. Fi-
nally, we will discuss monitoring tools and strategies and show you how to best implement them
to detect potential threats to your system.
