host_timeout is wrong?
--host_timeout should just be a
-, as far as i can see? Don't see how it could be different, but also, here it is..
There is various example of nftables port knocking including in nftables wiki https://wiki.nftables.org/wiki-nftables/index.php/Port_knocking_example. Maybe we can give an example here too.
Also can we use nftables instead of ipdatbles with knockd? by replacing
start_command = /usr/bin/iptables with
start_command = /usr/bin/nftables and appropriates parameters? If so it will be good to give an example too.