iptables:tldr:4adb5

iptables: Save iptables configuration of a given table to a file.

iptables-save

$ sudo iptables-save -t ${tablename} > ${path-to-iptables_file}

try on your machine

This command saves the configuration of the iptables firewall in a file. Let's break down the command:

sudo: It is a command that allows a user with administrative privileges (usually the root user) to execute a command as another user, typically the superuser root.
iptables-save: It is a command that displays the current iptables rules in a human-readable format.
-t ${tablename}: It specifies the specific table to save. The ${tablename} variable needs to be replaced with the actual name of the table (e.g., filter, nat, mangle, etc.). The filter table is used for normal packet filtering, so it's the most commonly used table.
> ${path-to-iptables_file}: It redirects the output of the command to a file specified by the ${path-to-iptables_file} variable. The ${path-to-iptables_file} needs to be replaced with the actual file path and name where you want to save the iptables rules.

By running this command with proper values for ${tablename} and ${path-to-iptables_file}, you can save the current iptables firewall configuration to a file for later use or reference.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

back to the iptables-save tool