How to quickly learn iptables?

Question

linux

How can I quickly learn iptables?
Maybe there are video tutorials ready for fools, so that everything is chewed in detail with examples?
I would be glad if someone wants to conduct paid video lessons for me and speed up the learning process.

Answer 1

this is enough

Answer 2

What exactly do you want to learn? All tools have a scope and from this the entry threshold changes.
Learning to open ports - one
Balancing the load on traffic - another
Signature on the fly to ban objectionable - the third.

Answer 3

until you sing yourself .... you won’t figure it out.

Answer 4

iptables cannot be "learned", it is not a verse, not a prayer. But you can learn to write rules that are effective for solving certain problems.