My system admin gave me a file with iptables rules. What command do I type in to load this?
I watched him do it before, and he did it in 1 line! Something like...iptables > thefile.dat ????
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3 Answers
My system admin gave me a file with iptables rules. What command do I type in to load this?
iptables-restore < file-with-iptables-rules.txt
I watched him do it before, and he did it in 1 line! Something like...iptables > thefile.dat ????
iptables-save > file-with-iptables-rules.txt
answered Sep 29, 2009 at 6:37
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Is it possible to import from a URL? eg:
iptables-restore < http://git.company.com/Company/iptables-rules/blob/master/iptables-rules.txt– JayJun 6, 2017 at 23:29 -
I believe the iptables-restore command functions local to the filesystem; however, nothing stops you from piping a data stream into it via curl or wget. So in theory, instead of just specifying a URL, you would fetch the contents of the file and pipe that to the command. Jun 7, 2017 at 21:07
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1@Jay Probably something similar to
curl -s SOME_URL | iptables-restore. Jun 13, 2017 at 8:02 -
If you want to do this with sudo you'll also need to use tee: sudo iptables-save | sudo tee /etc/iptables/rules.txt sudo iptables-restore /etc/iptables/rules.txt– jorfusAug 17, 2017 at 16:49
You load an iptables configuration file using iptables-restore
iptables-restore thefile.dat
This has effect immediately. However for this settings to be persistent over system reboot they must be saved. On most distributions this can be done with.
/etc/init.d/iptables save
As mentioned in other answers the configuration can be saved using
iptables-save > thesavefile.dat
The file itself is a text file and can be edited with any texteditor and then reloaded into iptables using the iptables-restore command.
To import an iptables script into your ruleset
iptables-restore < /path/to/firewall_script
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Is it possible to import from a URL? eg: iptables-restore < git.company.com/Company/iptables-rules/blob/master/…– JayJun 6, 2017 at 23:28