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5d7faa45 | 1 | #!/bin/sh |
dc21519f AM |
2 | ############################################################################### |
3 | # # | |
4 | # IPFire.org - A linux based firewall # | |
5bee9a9d | 5 | # Copyright (C) 2013 Alexander Marx <amarx@ipfire.org> # |
dc21519f AM |
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 | ############################################################################### | |
dc21519f | 21 | |
52c5ec83 | 22 | eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings) |
6d8eb5de | 23 | eval $(/usr/local/bin/readhash /var/ipfire/firewall/settings) |
5d7faa45 AM |
24 | eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings) |
25 | ||
a211fee3 MT |
26 | function iptables() { |
27 | /sbin/iptables --wait "$@" | |
28 | } | |
29 | ||
5d7faa45 AM |
30 | iptables -F POLICYFWD |
31 | iptables -F POLICYOUT | |
d47bb8a1 | 32 | iptables -F POLICYIN |
53f4c74d AM |
33 | |
34 | if [ -f "/var/ipfire/red/iface" ]; then | |
52c5ec83 | 35 | IFACE="$(</var/ipfire/red/iface)" |
53f4c74d | 36 | fi |
5d7faa45 | 37 | |
52c5ec83 MT |
38 | # Figure out what devices are configured. |
39 | HAVE_BLUE="false" | |
40 | HAVE_ORANGE="false" | |
41 | ||
42 | case "${CONFIG_TYPE}" in | |
43 | 2) | |
bcf1a624 | 44 | HAVE_ORANGE="true" |
52c5ec83 MT |
45 | ;; |
46 | 3) | |
bcf1a624 | 47 | HAVE_BLUE="true" |
52c5ec83 MT |
48 | ;; |
49 | 4) | |
50 | HAVE_BLUE="true" | |
51 | HAVE_ORANGE="true" | |
52 | ;; | |
53 | esac | |
54 | ||
2513ae73 MT |
55 | HAVE_OPENVPN="true" |
56 | ||
52c5ec83 | 57 | # INPUT |
0e53d8a9 MT |
58 | |
59 | # OpenVPN INPUT | |
60 | # Allow direct access to the internal IP addresses of the firewall | |
61 | # from remote subnets if forward policy is allowed. | |
62 | case "${HAVE_OPENVPN},${POLICY}" in | |
63 | true,MODE1) ;; | |
64 | true,*) | |
65 | iptables -A POLICYIN -i tun+ -j ACCEPT | |
66 | ;; | |
67 | esac | |
68 | ||
52c5ec83 MT |
69 | case "${FWPOLICY2}" in |
70 | REJECT) | |
71 | if [ "${DROPINPUT}" = "on" ]; then | |
a211fee3 | 72 | iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT" |
5d7faa45 | 73 | fi |
a211fee3 | 74 | iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT" |
52c5ec83 MT |
75 | ;; |
76 | *) # DROP | |
77 | if [ "${DROPINPUT}" = "on" ]; then | |
a211fee3 | 78 | iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT" |
5d7faa45 | 79 | fi |
a211fee3 | 80 | iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT" |
52c5ec83 MT |
81 | ;; |
82 | esac | |
93b75f31 | 83 | |
52c5ec83 MT |
84 | # FORWARD |
85 | case "${POLICY}" in | |
86 | MODE1) | |
87 | case "${FWPOLICY}" in | |
88 | REJECT) | |
89 | if [ "${DROPFORWARD}" = "on" ]; then | |
a211fee3 | 90 | iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD" |
52c5ec83 | 91 | fi |
a211fee3 | 92 | iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD" |
52c5ec83 MT |
93 | ;; |
94 | *) # DROP | |
95 | if [ "${DROPFORWARD}" = "on" ]; then | |
a211fee3 | 96 | iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD" |
52c5ec83 | 97 | fi |
a211fee3 | 98 | iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD" |
52c5ec83 MT |
99 | ;; |
100 | esac | |
101 | ;; | |
102 | ||
103 | *) | |
104 | if [ -n "${IFACE}" ]; then | |
105 | if [ "${HAVE_BLUE}" = "true" ] && [ -n "${BLUE_DEV}" ]; then | |
a211fee3 | 106 | iptables -A POLICYFWD -i "${BLUE_DEV}" ! -o "${IFACE}" -j DROP |
52c5ec83 MT |
107 | fi |
108 | if [ "${HAVE_ORANGE}" = "true" ] && [ -n "${ORANGE_DEV}" ]; then | |
a211fee3 | 109 | iptables -A POLICYFWD -i "${ORANGE_DEV}" ! -o "${IFACE}" -j DROP |
52c5ec83 | 110 | fi |
5d7faa45 | 111 | fi |
a211fee3 MT |
112 | iptables -A POLICYFWD -j ACCEPT |
113 | iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP | |
52c5ec83 MT |
114 | ;; |
115 | esac | |
116 | ||
117 | # OUTGOING | |
118 | case "${POLICY1}" in | |
119 | MODE1) | |
120 | case "${FWPOLICY1}" in | |
121 | REJECT) | |
122 | if [ "${DROPOUTGOING}" = "on" ]; then | |
a211fee3 | 123 | iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT" |
52c5ec83 | 124 | fi |
a211fee3 | 125 | iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT" |
52c5ec83 MT |
126 | ;; |
127 | *) # DROP | |
128 | if [ "${DROPOUTGOING}" == "on" ]; then | |
a211fee3 | 129 | iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT" |
52c5ec83 | 130 | fi |
a211fee3 | 131 | iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT" |
52c5ec83 MT |
132 | ;; |
133 | esac | |
134 | ;; | |
135 | *) | |
a211fee3 MT |
136 | iptables -A POLICYOUT -j ACCEPT |
137 | iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP | |
52c5ec83 MT |
138 | ;; |
139 | esac | |
aff15def AM |
140 | |
141 | exit 0 |