You add a rule like this:

ufw allow 22/tcp

The rule is saved, and is applied even after reboot. But it's not written anywhere in /etc/ufw. Where is it saved to? (Ubuntu, using ufw as pre-installed.)

  • wow, I leaned something new today. "uncomplicated firewall" – answerSeeker Feb 21 '18 at 3:39

In my Ubuntu 11 server, the firewall rules are saved in /lib/ufw/user.rules

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    Bingo, thanks. There's also a user6.rules (which doesn't have all the rules I created, but otherwise looks similar). – Steve Bennett Feb 13 '13 at 8:20
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    user6.rules is for IP version 6 (ipv6) firewall rules. – Daniel t. Feb 13 '13 at 14:41
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    Still correct in Ubuntu 14, thank you. – Nick Triantafillou Aug 27 '15 at 1:24
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    What a crazy location! I just spent 20 minutes looking for this :-( – reinierpost Dec 2 '15 at 16:48

Ubuntu 16.04 LTS


Debian 9


In general, try:

locate user.rules

Should output something like:

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    It's recommended to run updatedb at least once before using locate. – ccpizza Jan 15 '17 at 19:44

I believe it's under lib/ufw/rules[6].rules

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In my version, 8.04 LTS Server the files are stored in /var/lib/ufw as /var/lib/ufw/user.rules and /var/lib/ufw/user6.rules.

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This should work on all Linux systems assuming a ".rules" suffix and residing beneath a directory named "ufw":

sudo find / -name "*.rules" -exec ls -l {} \; | grep ufw

Using the "ls -l" shows that some of them are links to others, and which ones have been updated most recently (implying they are active?)

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