Iptables/scripts/flush
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#!/bin/sh # # rc.flush-iptables - Resets iptables to default values. # # Copyright (C) 2001 Oskar Andreasson <bluefluxATkoffeinDOTnet> # # 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; version 2 of the License. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program or from the site that you downloaded it # from; if not, write to the Free Software Foundation, Inc., 59 Temple # Place, Suite 330, Boston, MA 02111-1307 USA # # Configurations # IPTABLES="/usr/sbin/iptables" # # reset the default policies in the filter table. # $IPTABLES -P INPUT ACCEPT $IPTABLES -P FORWARD ACCEPT $IPTABLES -P OUTPUT ACCEPT # # reset the default policies in the nat table. # $IPTABLES -t nat -P PREROUTING ACCEPT $IPTABLES -t nat -P POSTROUTING ACCEPT $IPTABLES -t nat -P OUTPUT ACCEPT # # reset the default policies in the mangle table. # $IPTABLES -t mangle -P PREROUTING ACCEPT $IPTABLES -t mangle -P POSTROUTING ACCEPT $IPTABLES -t mangle -P INPUT ACCEPT $IPTABLES -t mangle -P OUTPUT ACCEPT $IPTABLES -t mangle -P FORWARD ACCEPT # # flush all the rules in the filter and nat tables. # $IPTABLES -F $IPTABLES -t nat -F $IPTABLES -t mangle -F # # erase all chains that's not default in filter and nat table. # $IPTABLES -X $IPTABLES -t nat -X $IPTABLES -t mangle -X
- Source: Iptables Tutorial 1.2.2