Hacker News new | ask | show | jobs
by canada_dry 2707 days ago
Can anyone recommend an excellent resource on how IPTABLES work? One with diagrams and real world examples?
2 comments

I cannot recommend this specific diagram highly enough: https://upload.wikimedia.org/wikipedia/commons/3/37/Netfilte...

I've easily had a dozen times where I was able to resolve a complex problem or figure out how to do the thing I wanted to do through examination of this flowchart.

Yup... agreed.

I just wish someone would come up with an associated easy-to-digest guide-for-dummies for a few different real world scenarios.

This is what I used to learn about IPTABLES: http://homes.di.unimi.it/sisop/qemu/iptables-tutorial.pdf