How to get a callback or event in NodeJS when iptables blocks/passes a data packet?

Question

linux

I’ve been trying to figure out how to do this trick for a long time: when iptables receives a packet with data and passes or blocks it, an event arrives in NodeJS or somehow it catches a callback, while receiving this packet (buffer or not - it doesn’t matter) or netflow . Perhaps there is some kind of layer in the form of another utility that can already transfer the event to the node?
Any ideas?

Answer 1

iptables - log event -> pipe
NodeJS - read from this pipe