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iptables -F

Discussion in 'General Discussion' started by epanagio, Jun 21, 2014.

  1. epanagio

    epanagio Well-Known Member

    May 26, 2012
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    Somehow a few hours ago all my domains and cpanel that I host on a server weren't available. Using a browser I would get an error telling me that the domain could not be accessed.

    I was able to ssh using the IP address and I started searching the Internet about networking issues and fixes. Finally I issued the command
    iptables -F
    I think this command flushes the iptables. If I reboot the server, everything becomes unavailable again. As soon as I issue the above command, poof, everything is available again.

    Can someone please help me understand what is happening here, please. Why is tis command makes everything to work but if I reboot everything becomes unavailable?

  2. cPanelMichael

    cPanelMichael Technical Support Community Manager Staff Member

    Apr 11, 2011
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    Hello :)

    That command will temporarily flush the rules. If you want to ensure the default rules are not restored, then you must run a command such as:

    /etc/init.d/iptables save
    That being said, it's likely a better idea to install a third-party firewall management utility such as CSF.

    Thank you.
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