.TH netfilter-persistent 8 .SH NAME netfilter-persistent \- load, flush and save netfilter rule sets .SH SYNOPSIS .B netfilter-persistent start .PP .B netfilter-persistent stop .PP .B netfilter-persistent flush .PP .B netfilter-persistent save .SH DESCRIPTION .B netfilter-persistent uses a set of plugins to load, flush and save netfilter rules at boot and halt time. Plugins can be written in any suitable language and stored in .I /usr/share/netfilter-persistent/plugins.d .SH OPTIONS .TP start Calls all plugins with the .I start argument, causing them to load their rules into netfilter. .TP stop If the configuration .I FLUSH_ON_STOP is enabled, calls all plugins with the .I flush argument, causing them to remove their rules from netfilter. Otherwise, emits a warning only. .TP flush Calls all plugins with the .I flush argument, causing them to remove their rules from netfilter. .TP save Calls all plugins with the .I save argument, causing them to save the currently-loaded rules to persistent storage. .SH PLUGINS Plugins can be written in any language and are merely executed by .B netfilter-persistent with a single argument. All plugins are stored in .I /usr/share/netfilter-persistent/plugins.d .PP Plugins must implement the .I start .I flush and .I save arguments and must not rely on additional arguments for other functionality. .br Plugins must return 0 on success and any other code on failure. .PP Plugins are free to use and extend the configuration in .I /etc/default/netfilter-persistent and to implement their own configuration files. .SH FILES .TP .I /etc/default/netfilter-persistent Main configuration file .TP .I /usr/share/netfilter-persistent/plugins.d Plugin directory .SH COPYRIGHT Copyright (C) 2009 Simon Richter .br Copyright (C) 2010, 2014 Jonathan Wiltshire .PP This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. .SH AUTHORS Jonathan Wiltshire