What does Netfilter with the result of the modules called on hook?
Link of the tutorial (suggest me a better name): https://www.digitalocean.com/community/tutorials/a-deep-dive-into-iptables-and-netfilter-architecture
Thank you for the presentation of the nitty-gritty of iptables & netfilter.
I would like to know how netfilter handle the result of the hooked modules.
As you explain, every module return an a decision to netfilter. As netfilter call all modules in turn, how it makes the final decision?