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How can I make a specific set of iptables rules permanent?

rated 0 times [ 56] [ 0] / answers: 1 / hits: 100747 / 3 Years ago, wed, june 16, 2021, 7:27:23

Is there a "best practice" or standard to make a few iptables rules permanent? I mean: automatically applied upon a system reboot?

I am using a VPS with Ubuntu Server 10.04 LTS (Lucid Lynx).

Thank you.

BIG EDIT: I don't want ANY rule to be persisted (like iptables-persistent package does). I want only my own specific set to be reloaded... if other rules are eventually added by running iptables, these should be discarded...

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mocipe

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answered 3 Years ago naldis · Accepted Answer

The simplest method is to use
iptables-save and
iptables-restore to
save the currently-defined iptables rules to a file and (re)load them
(e.g., upon reboot).

So, for instance, you would run

sudo iptables-save | sudo tee /etc/iptables.conf

to save your current iptables rules to /etc/iptables.conf and then insert these lines in /etc/rc.local:

# Load iptables rules from this file

iptables-restore < /etc/iptables.conf