@merompetehla UFW and firewalld provide a higher level of control, which means that they are quicker to learn, easier for simple tasks but harder to use in more granular levels. Their setup is translated into iptables rules at the end. With Iptables or its successor Nftables, you'll need to invest a bit more time to learn but have a more granular level of control at the end. I hope this helps.

@ajsadauskas @asklemmy How about not using any cloud service at all?