56 lines
2.2 KiB
PHP
56 lines
2.2 KiB
PHP
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#!/bin/bash
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# By Brielle Bruns <bruns@2mbit.com>
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# URL: http://www.sosdg.org/freestuff/firewall
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# License: GPLv3
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#
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# Copyright (C) 2009 - 2014 Brielle Bruns
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# Copyright (C) 2009 - 2014 The Summit Open Source Development Group
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# iptables_rules_flush (ipv6|ipv4)
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# Clear all rules from iptables - be very careful in how this is called as it
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# could easily lock out the user from the network. Best way to be safe, is to
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# call iptables_policy_reset first then this function.
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function iptables_rules_flush {
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IP_VERSION=$1
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case $IP_VERSION in
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ipv6) VER_IPTABLES=${IP6TABLES} ; TABLE_NAMES=/proc/net/ip6_tables_names ;;
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ipv4|*) VER_IPTABLES=${IPTABLES} ; TABLE_NAMES=/proc/net/ip_tables_names ;;
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esac
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display_c RED "Flushing ${IP_VERSION} rules..."
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${VER_IPTABLES} --flush &>/dev/null
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${VER_IPTABLES} -F OUTPUT &>/dev/null
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${VER_IPTABLES} -F PREROUTING &>/dev/null
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${VER_IPTABLES} -F POSTROUTING &>/dev/null
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for i in `cat $TABLE_NAMES`; do
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${VER_IPTABLES} -F -t $i &>/dev/null
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done
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${VER_IPTABLES} -X
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}
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# iptables_policy_set (ipv6|ipv4) (ACCEPT|DROP)
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# Sets all policy rules to either ACCEPT or DROP for ipv4 or ipv6
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# If no policy given, assume ACCEPT
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function iptables_policy_reset {
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IP_VERSION=$1
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SET_POLICY=${2=ACCEPT}
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case $IP_VERSION in
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ipv6) VER_IPTABLES=${IP6TABLES} ;;
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ipv4|*) VER_IPTABLES=${IPTABLES} ;;
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esac
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display_c RED "Setting ${IP_VERSION} policies to ${SET_POLICY}..."
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${VER_IPTABLES} --policy INPUT ${SET_POLICY}
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${VER_IPTABLES} --policy OUTPUT ${SET_POLICY}
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${VER_IPTABLES} --policy FORWARD ${SET_POLICY}
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}
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