Summary
In this chapter, we looked at two helper utilities that can simplify using either iptables or nftables. We started with ufw, which is available for the Debian and Ubuntu families. Then, we looked at firewalld, which used to be specific to Red Hat-type distros, but is now also available in Ubuntu repositories and comes already installed and activated on the SUSE distros.
In the space that I’ve been allotted, I’ve presented the basics of using these technologies to set up single-host protection. I’ve also presented some details about the innards of firewalld that you won’t find documented anywhere else, including in the official Red Hat documentation.
In the next chapter, we’ll look at the various encryption technologies that can help keep your data private. I’ll see you there.
