Once again, we've come to the conclusion of another chapter, and we covered a lot of cool topics. We started by looking at various ways to audit which services are running on your systems, and we saw some examples of what you probably don't want to see. We then saw how to use the password protection features of GRUB 2, and we saw the little quirks that we have to deal with when using those features. Next, we had a change of pace by looking at how to further lock down a system by properly setting up a system's BIOS/UEFI. Finally, we looked at why we need to begin preparations to set up a hardened system by obtaining and following the proper checklist.

Not only does this conclude another chapter, but it also concludes this book. However, this doesn't conclude your journey into the land of Mastering Linux Security and Hardening. Oh, no. As you continue this journey, you'll find that there's still more to learn, and still more that won't fit into the confines of just one book. Where you go from here mainly depends on the particular area of IT administration that you work in. Different types of Linux servers, whether they be web servers, DNS servers, or whatever else, have their own special security requirements, and you'll want to follow the learning path that best fits your needs.

I've enjoyed the part of the journey that I've been able to accompany you on. I hope that you've enjoyed it just as much as I have.