Summary

In this chapter, you were introduced to OPNsense, its project history, versions, and the improvements made by pfSense and m0n0wall. I also shared a little bit of my history with you and why I decided to use it, with some examples. We learned about FreeBSD and what it is and is not, and about its hardened fork, HardenedBSD. We explored the OPNsense core features and typical deployments, with some examples of how you can deploy them in your network environment. Finally, we dived into support options and how to use each of them. Now that we know how OPNsense works, we can find help if needed, which versions are available, and the most common scenarios to deploy it. We will now move on to the following chapters, which will help you better understand some of the concepts discussed in this chapter more practically. In the next chapter, we will see how to install OPNsense and explore some of its features!