mirror of
https://github.com/vincentmli/bpfire.git
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129 lines
4.2 KiB
Bash
Executable File
129 lines
4.2 KiB
Bash
Executable File
#!/bin/sh
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###############################################################################
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# #
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# IPFire.org - A linux based firewall #
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# Copyright (C) 2013 Alexander Marx <amarx@ipfire.org> #
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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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# #
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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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# #
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###############################################################################
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eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
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eval $(/usr/local/bin/readhash /var/ipfire/firewall/settings)
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eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
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function iptables() {
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/sbin/iptables --wait "$@"
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}
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iptables -F POLICYFWD
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iptables -F POLICYOUT
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iptables -F POLICYIN
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if [ -f "/var/ipfire/red/iface" ]; then
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IFACE="$(</var/ipfire/red/iface)"
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fi
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# Figure out what devices are configured.
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HAVE_BLUE="false"
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HAVE_ORANGE="false"
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case "${CONFIG_TYPE}" in
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2)
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HAVE_BLUE="true"
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;;
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3)
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HAVE_ORANGE="true"
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;;
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4)
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HAVE_BLUE="true"
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HAVE_ORANGE="true"
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;;
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esac
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# INPUT
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case "${FWPOLICY2}" in
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REJECT)
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if [ "${DROPINPUT}" = "on" ]; then
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iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT"
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fi
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iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT"
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;;
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*) # DROP
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if [ "${DROPINPUT}" = "on" ]; then
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iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
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fi
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iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT"
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;;
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esac
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# FORWARD
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case "${POLICY}" in
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MODE1)
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case "${FWPOLICY}" in
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REJECT)
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if [ "${DROPFORWARD}" = "on" ]; then
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iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD"
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fi
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iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD"
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;;
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*) # DROP
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if [ "${DROPFORWARD}" = "on" ]; then
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iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD"
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fi
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iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD"
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;;
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esac
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;;
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*)
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if [ -n "${IFACE}" ]; then
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if [ "${HAVE_BLUE}" = "true" ] && [ -n "${BLUE_DEV}" ]; then
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iptables -A POLICYFWD -i "${BLUE_DEV}" ! -o "${IFACE}" -j DROP
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fi
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if [ "${HAVE_ORANGE}" = "true" ] && [ -n "${ORANGE_DEV}" ]; then
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iptables -A POLICYFWD -i "${ORANGE_DEV}" ! -o "${IFACE}" -j DROP
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fi
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fi
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iptables -A POLICYFWD -j ACCEPT
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iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP
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;;
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esac
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# OUTGOING
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case "${POLICY1}" in
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MODE1)
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case "${FWPOLICY1}" in
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REJECT)
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if [ "${DROPOUTGOING}" = "on" ]; then
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iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT"
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fi
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iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT"
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;;
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*) # DROP
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if [ "${DROPOUTGOING}" == "on" ]; then
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iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT"
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fi
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iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT"
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;;
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esac
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;;
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*)
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iptables -A POLICYOUT -j ACCEPT
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iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP
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;;
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esac
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exit 0
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