I used iptables -F on my machine, and what can I do to recover the iptables into the default without rebooting my machine?
I restarted the iptables service and it failed, and I can't find iptables under /etc/sysconfig/iptables
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2 Answers
The iptables-restore command is used to restore the iptables rule-set that was saved with the iptables-save command. It takes all the input from standard input and can't load from files as of writing this, unfortunately. This is the command syntax for iptables-restore:
iptables-restore [-c] [-n]
answered Jan 3, 2014 at 7:56
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I do know this command, but since I never save my iptable with iptables-save, so I can't find any file to restore, I am wondering if their is a default iptables stored somewhere, so I can just load this iptables would be fine.– dspjmCommented Jan 4, 2014 at 6:31
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1@Unnikrishnan you can load files using standard redirection, e.g.,
iptables-restore < /path/to/file. Alternatively, use theiptables-applycommand.– pepoluanCommented Jan 13, 2014 at 9:27 -
1@dspjm what Linux distro are you using? Anyways, try
grep -r "*filter" /etc/*to find the files (generated by iptables-save)– pepoluanCommented Jan 13, 2014 at 9:27 -
@pepoluan using your method, I found a file suspicious /etc/ppp/firewall-masq, which is a script to add rules into iptables when system boot. I am using fedora BTW– dspjmCommented Jan 20, 2014 at 10:28
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1@dspjm Then I wager that file actually contains the iptables rules dump. Can you put that in a pastebin somewhere so I can take a peek?– pepoluanCommented Jan 22, 2014 at 3:54
Your system is probably using firewalld, so you'll probably want to run systemctl restart firewalld.
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Given the info provided, what the heck makes you think that? Commented Oct 30, 2023 at 21:32
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Seeing the question again after 3 years, truth be said, most probably from the top of my head.– gmelisCommented Nov 1, 2023 at 18:30
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