![]() If you update your firewall rules and want to save the changes, run this command: Install it with apt like this:ĭuring the installation, you will be asked if you want to save your current firewall rules. On Ubuntu, one way to save iptables rules is to use the iptables-persistent package. ![]() Iptables rules are ephemeral, which means they need to be manually saved for them to persist after a reboot. Let’s take a look at the iptables commands! Saving Rules Remember that you can check your current iptables ruleset with sudo iptables -S and sudo iptables -L. If your saved firewall rules allow SSH access, another method is to reboot your server. Once you are connected via the console, you can change your firewall rules to allow SSH access (or allow all traffic). ![]() If you’re using DigitalOcean, you can read our Recovery Console product documentation for more information. If you lose access due to your firewall settings, you may need to connect to it via a web-based console to fix your access. Note: When working with firewalls, take care not to lock yourself out of your own server by blocking SSH traffic (port 22, by default). If you want to put it somewhere else in the chain, you can use the -I option which allows you to specify the position of the new rule (or place it at the beginning of the chain by not specifying a rule number). All of these iptables commands use the -A option to append the new rule to the end of a chain. Keep in mind that the order of your rules matter.
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