Testing the knowledge on iptables and firewalld

[alekseev]

I want to test my knowledge on iptables and firewalld. Prompt online tests.

 

[Rob]

Best way to learn is to use it on your system.. or test systems.

Grab a digital ocean server (free cpl months.. top/right button) and deploy something, then use iptables to block/allow various ports. If you mess up, simply rebuild it!