Книга: Iptables Tutorial 1.2.2

Example rc.flush-iptables script

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Example rc.flush-iptables script

#!/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

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