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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/forward/settings) | |
24 | eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings) | |
25 | ||
26 | iptables -F POLICYFWD | |
27 | iptables -F POLICYOUT | |
28 | iptables -F POLICYIN | |
29 | ||
30 | if [ -f "/var/ipfire/red/iface" ]; then | |
31 | IFACE="$(</var/ipfire/red/iface)" | |
32 | fi | |
33 | ||
34 | # Figure out what devices are configured. | |
35 | HAVE_BLUE="false" | |
36 | HAVE_ORANGE="false" | |
37 | ||
38 | case "${CONFIG_TYPE}" in | |
39 | 2) | |
40 | HAVE_BLUE="true" | |
41 | ;; | |
42 | 3) | |
43 | HAVE_ORANGE="true" | |
44 | ;; | |
45 | 4) | |
46 | HAVE_BLUE="true" | |
47 | HAVE_ORANGE="true" | |
48 | ;; | |
49 | esac | |
50 | ||
51 | # INPUT | |
52 | case "${FWPOLICY2}" in | |
53 | REJECT) | |
54 | if [ "${DROPINPUT}" = "on" ]; then | |
55 | /sbin/iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT" | |
56 | fi | |
57 | /sbin/iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT" | |
58 | ;; | |
59 | *) # DROP | |
60 | if [ "${DROPINPUT}" = "on" ]; then | |
61 | /sbin/iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT" | |
62 | fi | |
63 | /sbin/iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT" | |
64 | ;; | |
65 | esac | |
66 | ||
67 | # FORWARD | |
68 | case "${POLICY}" in | |
69 | MODE1) | |
70 | case "${FWPOLICY}" in | |
71 | REJECT) | |
72 | if [ "${DROPFORWARD}" = "on" ]; then | |
73 | /sbin/iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD" | |
74 | fi | |
75 | /sbin/iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD" | |
76 | ;; | |
77 | *) # DROP | |
78 | if [ "${DROPFORWARD}" = "on" ]; then | |
79 | /sbin/iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD" | |
80 | fi | |
81 | /sbin/iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD" | |
82 | ;; | |
83 | esac | |
84 | ;; | |
85 | ||
86 | *) | |
87 | if [ -n "${IFACE}" ]; then | |
88 | if [ "${HAVE_BLUE}" = "true" ] && [ -n "${BLUE_DEV}" ]; then | |
89 | /sbin/iptables -A POLICYFWD -i "${BLUE_DEV}" ! -o "${IFACE}" -j DROP | |
90 | fi | |
91 | if [ "${HAVE_ORANGE}" = "true" ] && [ -n "${ORANGE_DEV}" ]; then | |
92 | /sbin/iptables -A POLICYFWD -i "${ORANGE_DEV}" ! -o "${IFACE}" -j DROP | |
93 | fi | |
94 | fi | |
95 | /sbin/iptables -A POLICYFWD -j ACCEPT | |
96 | /sbin/iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP | |
97 | ;; | |
98 | esac | |
99 | ||
100 | # OUTGOING | |
101 | case "${POLICY1}" in | |
102 | MODE1) | |
103 | case "${FWPOLICY1}" in | |
104 | REJECT) | |
105 | if [ "${DROPOUTGOING}" = "on" ]; then | |
106 | /sbin/iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT" | |
107 | fi | |
108 | /sbin/iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT" | |
109 | ;; | |
110 | *) # DROP | |
111 | if [ "${DROPOUTGOING}" == "on" ]; then | |
112 | /sbin/iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT" | |
113 | fi | |
114 | /sbin/iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT" | |
115 | ;; | |
116 | esac | |
117 | ;; | |
118 | *) | |
119 | /sbin/iptables -A POLICYOUT -j ACCEPT | |
120 | /sbin/iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP | |
121 | ;; | |
122 | esac | |
123 | ||
124 | exit 0 |