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ip6tables-save – Save ip6tables table configuration

The ip6tables-save command is a Linux command that is used to save the current IPv6 firewall rules for the ip6tables command. It saves the current configuration of the ip6tables firewall rules to a file, which can be loaded later using the ip6tables-restore command.

Overview

The ip6tables-save command is used to save the current IPv6 firewall rules for the ip6tables command. The saved configuration can be used to restore the firewall rules at a later time.

The syntax for the ip6tables-save command is as follows:

ip6tables-save [options] [table]

Here, options are the various options that can be used with the ip6tables-save command, and table is the name of the table to save. If table is not specified, all tables will be saved.

To save the firewall rules for the filter table, run the following command:

ip6tables-save > /etc/sysconfig/ip6tables

This command saves the filter table rules to the /etc/sysconfig/ip6tables file.

To save the firewall rules for the nat table, run the following command:

ip6tables-save -t nat > /etc/sysconfig/ip6tables-nat

This command saves the nat table rules to the /etc/sysconfig/ip6tables-nat file.

Options

The following table lists the available options for the ip6tables-save command:

Option Description
-t, --table table Specifies the table to save.
-c, --counters Saves the packet and byte counters for each rule.
-x, --exact Save the exact rule syntax.
-v, --verbose Verbose output.
-h, --help Displays the help message and exits.
--version Displays the version number and exits.

Troubleshooting Tips

Here are some troubleshooting tips for the ip6tables-save command:

  • If you get a “Permission denied” error when trying to save the firewall rules, try running the command with sudo.
  • If you get an error that says “iptables: unrecognized option ‘–dport'”, make sure that you are using the correct version of the iptables command. The iptables command is used for IPv4 firewall rules, while the ip6tables command is used for IPv6 firewall rules.

Notes

  • The ip6tables-save command saves the current firewall rules to a file, but it does not activate the rules. To activate the rules, you must use the ip6tables-restore command.
  • The saved configuration file can be edited manually, but be careful when doing so, as incorrect syntax can cause the firewall rules to fail.

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