Merge branch 'next' of ssh://git.ipfire.org/pub/git/ipfire-2.x into next
[people/teissler/ipfire-2.x.git] / config / firewall / firewall-policy
1 #!/bin/sh
2 ###############################################################################
3 # #
4 # IPFire.org - A linux based firewall #
5 # Copyright (C) 2013 Alexander Marx <amarx@ipfire.org> #
6 # #
7 # This program is free software: you can redistribute it and/or modify #
8 # it under the terms of the GNU General Public License as published by #
9 # the Free Software Foundation, either version 3 of the License, or #
10 # (at your option) any later version. #
11 # #
12 # This program is distributed in the hope that it will be useful, #
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of #
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
15 # GNU General Public License for more details. #
16 # #
17 # You should have received a copy of the GNU General Public License #
18 # along with this program. If not, see <http://www.gnu.org/licenses/>. #
19 # #
20 ###############################################################################
21
22 eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
23 eval $(/usr/local/bin/readhash /var/ipfire/firewall/settings)
24 eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings)
25
26 function iptables() {
27 /sbin/iptables --wait "$@"
28 }
29
30 iptables -F POLICYFWD
31 iptables -F POLICYOUT
32 iptables -F POLICYIN
33
34 if [ -f "/var/ipfire/red/iface" ]; then
35 IFACE="$(</var/ipfire/red/iface)"
36 fi
37
38 # Figure out what devices are configured.
39 HAVE_BLUE="false"
40 HAVE_ORANGE="false"
41
42 case "${CONFIG_TYPE}" in
43 2)
44 HAVE_BLUE="true"
45 ;;
46 3)
47 HAVE_ORANGE="true"
48 ;;
49 4)
50 HAVE_BLUE="true"
51 HAVE_ORANGE="true"
52 ;;
53 esac
54
55 # INPUT
56 case "${FWPOLICY2}" in
57 REJECT)
58 if [ "${DROPINPUT}" = "on" ]; then
59 iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT"
60 fi
61 iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT"
62 ;;
63 *) # DROP
64 if [ "${DROPINPUT}" = "on" ]; then
65 iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT"
66 fi
67 iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT"
68 ;;
69 esac
70
71 # FORWARD
72 case "${POLICY}" in
73 MODE1)
74 case "${FWPOLICY}" in
75 REJECT)
76 if [ "${DROPFORWARD}" = "on" ]; then
77 iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD"
78 fi
79 iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD"
80 ;;
81 *) # DROP
82 if [ "${DROPFORWARD}" = "on" ]; then
83 iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD"
84 fi
85 iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD"
86 ;;
87 esac
88 ;;
89
90 *)
91 if [ -n "${IFACE}" ]; then
92 if [ "${HAVE_BLUE}" = "true" ] && [ -n "${BLUE_DEV}" ]; then
93 iptables -A POLICYFWD -i "${BLUE_DEV}" ! -o "${IFACE}" -j DROP
94 fi
95 if [ "${HAVE_ORANGE}" = "true" ] && [ -n "${ORANGE_DEV}" ]; then
96 iptables -A POLICYFWD -i "${ORANGE_DEV}" ! -o "${IFACE}" -j DROP
97 fi
98 fi
99 iptables -A POLICYFWD -j ACCEPT
100 iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP
101 ;;
102 esac
103
104 # OUTGOING
105 case "${POLICY1}" in
106 MODE1)
107 case "${FWPOLICY1}" in
108 REJECT)
109 if [ "${DROPOUTGOING}" = "on" ]; then
110 iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT"
111 fi
112 iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT"
113 ;;
114 *) # DROP
115 if [ "${DROPOUTGOING}" == "on" ]; then
116 iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT"
117 fi
118 iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT"
119 ;;
120 esac
121 ;;
122 *)
123 iptables -A POLICYOUT -j ACCEPT
124 iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP
125 ;;
126 esac
127
128 exit 0