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Is simply enabling the firewall ufw (sudo ufw enable) sufficient enough for protection of the OS ? I mean should extra rules be added for 'better' protection, or is simply enabling the firewall enough for good results and protection from hackers or other stuff ?

With the output of sudo ufw status verbose I get

standard: Deny (icomming) / Allow (outgoing) and status: active

It's a bit confusing when some experts throw in that extra rules should be made, since uwf active without rules give absolute no protection.

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closed as not a real question by mikewhatever, Stephen Myall, con-f-use, Ringtail, belacqua Oct 25 '12 at 14:22

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center.If this question can be reworded to fit the rules in the help center, please edit the question.

    
Have you looked at: askubuntu.com/questions/83830/what-rules-to-use-for-ufw (written for 11.10) –  david6 Oct 25 '12 at 8:26
    
Do you really need to know specifics for each Ubuntu release? Best practices changes slightly with each release. –  david6 Oct 25 '12 at 8:31

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