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this post was submitted on 14 Sep 2023
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Linux
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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).
Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.
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Most tutorials, even recent ones, reference iptables. Never seen nftables. One example is WireGuard guide.
nftables has been the replacement for iptables since kernel 3.13.
https://wiki.nftables.org/wiki-nftables/index.php/What_is_nftables%3F
True; but many guides & tutorials that came out long after that still give their examples/instructions in iptables. Esp. those that involve ifup/ifdown/etc. scripts.
(although nftables is considerably easier to read, IMHO)
I've never seen nftables, or should I say never noticed nftables, when ever I've seen documentation it's always referenced iptables, if it has mentioned nftables I'm guessing my brain just glossed over it. It's kind of like with networking configuring with /etc/network/interfaces rather than with netplan or network manager or systems or ifup ifdown, or anything else I've missed