I started with ipfw, then ipchains, then iptables and now nftables. That is just on Linux. To be fair: I just downloaded a ipfw setup and didn't give it much

I started with ipfw, then ipchains, then iptables and now nftables. That is just on Linux. To be fair: I just downloaded a ipfw setup and didn't give it much thought. I spend several weeks hand crafting several ipchains scripts. I spent ages with iptables and wrote a rubbish multi WAN effort and eventually ditched it for pfSense for edge. More ages for a host based effort. I also use ufw quite a bit for iptables. I use firewalld for nftables, these days.