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7.4.4. Installing the Rules at Each Boot‌

In order to implement the firewall rules each time the machine is booted, you will need to register the configuration script in an up directive of the /etc/network/interfaces file. In the following example, the script is stored under /usr/local/etc/arrakis.fw.

auto eth0

iface eth0 inet static address 192.168.0.1

network 192.168.0.0

netmask 255.255.255.0

broadcast 192.168.0.255

up /usr/local/etc/arrakis.fw

auto eth0

iface eth0 inet static address 192.168.0.1

network 192.168.0.0

netmask 255.255.255.0

broadcast 192.168.0.255

up /usr/local/etc/arrakis.fw

This example assumes that you are using ifupdown to configure the network interfaces. If you are using something else (like NetworkManager or systemd-networkd), then refer to their respective documentation to find out ways to execute a script after the interface has been brought up.

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