Summary
In this chapter, we looked at both of the helper programs that directly interface with the netfilter firewall. First, we looked at our trusty old friend, iptables. We saw that even though it’s been around forever and still works, it does have some shortcomings. Then, we worked with nftables and saw that it has certain advantages over the old iptables.
In the space that’s been allotted for this chapter, I’ve only been able to present the essentials that you need in order to set up basic host protection. However, this should be enough to get you started.
In the next chapter, we’ll look at ufw and firewalld, which are helper programs for the two helper programs that we discussed in this chapter. I’ll see you there.
