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#Now we need to ensure that the iptables rules are applied when we reboot the server. At the moment, the changes will be lost and it will go back to allowing everything from everywhere. #Open the file /etc/network/interfaces: nano /etc/network/interfaces #Add a single line (shown below) just after 'iface lo inet loopback': ... auto lo iface lo inet loopback pre-up iptables-restore < /etc/iptables.up.rules # The primary network interface ...
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