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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 | ||
d7050fc0 | 55 | HAVE_IPSEC="true" |
2513ae73 MT |
56 | HAVE_OPENVPN="true" |
57 | ||
52c5ec83 | 58 | # INPUT |
0e53d8a9 | 59 | |
c0e0848f MT |
60 | # Allow access from GREEN |
61 | iptables -A POLICYIN -i "${GREEN_DEV}" -j ACCEPT | |
62 | ||
d7050fc0 MT |
63 | # IPsec INPUT |
64 | case "${HAVE_IPSEC},${POLICY}" in | |
65 | true,MODE1) ;; | |
66 | true,*) | |
67 | iptables -A POLICYIN -m policy --pol ipsec --dir in -j ACCEPT | |
68 | ;; | |
69 | esac | |
70 | ||
0e53d8a9 MT |
71 | # OpenVPN INPUT |
72 | # Allow direct access to the internal IP addresses of the firewall | |
73 | # from remote subnets if forward policy is allowed. | |
74 | case "${HAVE_OPENVPN},${POLICY}" in | |
75 | true,MODE1) ;; | |
76 | true,*) | |
77 | iptables -A POLICYIN -i tun+ -j ACCEPT | |
78 | ;; | |
79 | esac | |
80 | ||
52c5ec83 MT |
81 | case "${FWPOLICY2}" in |
82 | REJECT) | |
83 | if [ "${DROPINPUT}" = "on" ]; then | |
824dc936 | 84 | iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "REJECT_INPUT " |
5d7faa45 | 85 | fi |
a211fee3 | 86 | iptables -A POLICYIN -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_INPUT" |
52c5ec83 MT |
87 | ;; |
88 | *) # DROP | |
89 | if [ "${DROPINPUT}" = "on" ]; then | |
824dc936 | 90 | iptables -A POLICYIN -m limit --limit 10/minute -j LOG --log-prefix "DROP_INPUT " |
5d7faa45 | 91 | fi |
a211fee3 | 92 | iptables -A POLICYIN -j DROP -m comment --comment "DROP_INPUT" |
52c5ec83 MT |
93 | ;; |
94 | esac | |
93b75f31 | 95 | |
52c5ec83 MT |
96 | # FORWARD |
97 | case "${POLICY}" in | |
98 | MODE1) | |
99 | case "${FWPOLICY}" in | |
100 | REJECT) | |
101 | if [ "${DROPFORWARD}" = "on" ]; then | |
824dc936 | 102 | iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "REJECT_FORWARD " |
52c5ec83 | 103 | fi |
a211fee3 | 104 | iptables -A POLICYFWD -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_FORWARD" |
52c5ec83 MT |
105 | ;; |
106 | *) # DROP | |
107 | if [ "${DROPFORWARD}" = "on" ]; then | |
824dc936 | 108 | iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD " |
52c5ec83 | 109 | fi |
a211fee3 | 110 | iptables -A POLICYFWD -j DROP -m comment --comment "DROP_FORWARD" |
52c5ec83 MT |
111 | ;; |
112 | esac | |
113 | ;; | |
114 | ||
115 | *) | |
c26a9ed2 | 116 | # Access from GREEN is granted to everywhere |
c926c637 AF |
117 | if [ "${IFACE}" = "${GREEN_DEV}" ]; then |
118 | # internet via green | |
119 | # don't check source IP/NET if IFACE is GREEN | |
120 | iptables -A POLICYFWD -i "${GREEN_DEV}" -j ACCEPT | |
121 | else | |
122 | iptables -A POLICYFWD -i "${GREEN_DEV}" -s "${GREEN_NETADDRESS}/${GREEN_NETMASK}" -j ACCEPT | |
123 | fi | |
c26a9ed2 MT |
124 | |
125 | # Grant access for IPsec VPN connections | |
126 | iptables -A POLICYFWD -m policy --pol ipsec --dir in -j ACCEPT | |
127 | ||
128 | # Grant access for OpenVPN connections | |
129 | iptables -A POLICYFWD -i tun+ -j ACCEPT | |
130 | ||
52c5ec83 MT |
131 | if [ -n "${IFACE}" ]; then |
132 | if [ "${HAVE_BLUE}" = "true" ] && [ -n "${BLUE_DEV}" ]; then | |
c26a9ed2 | 133 | iptables -A POLICYFWD -i "${BLUE_DEV}" -s "${BLUE_NETADDRESS}/${BLUE_NETMASK}" -o "${IFACE}" -j ACCEPT |
52c5ec83 | 134 | fi |
8089b78d | 135 | |
c26a9ed2 MT |
136 | if [ "${HAVE_ORANGE}" = "true" ] && [ -n "${ORANGE_DEV}" ]; then |
137 | iptables -A POLICYFWD -i "${ORANGE_DEV}" -s "${ORANGE_NETADDRESS}/${ORANGE_NETMASK}" -o "${IFACE}" -j ACCEPT | |
8089b78d | 138 | fi |
c26a9ed2 | 139 | fi |
8089b78d | 140 | |
c26a9ed2 MT |
141 | if [ "${DROPFORWARD}" = "on" ]; then |
142 | iptables -A POLICYFWD -m limit --limit 10/minute -j LOG --log-prefix "DROP_FORWARD " | |
5d7faa45 | 143 | fi |
a211fee3 | 144 | iptables -A POLICYFWD -m comment --comment "DROP_FORWARD" -j DROP |
52c5ec83 MT |
145 | ;; |
146 | esac | |
147 | ||
148 | # OUTGOING | |
149 | case "${POLICY1}" in | |
150 | MODE1) | |
151 | case "${FWPOLICY1}" in | |
152 | REJECT) | |
153 | if [ "${DROPOUTGOING}" = "on" ]; then | |
824dc936 | 154 | iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "REJECT_OUTPUT " |
52c5ec83 | 155 | fi |
a211fee3 | 156 | iptables -A POLICYOUT -j REJECT --reject-with icmp-host-unreachable -m comment --comment "DROP_OUTPUT" |
52c5ec83 MT |
157 | ;; |
158 | *) # DROP | |
159 | if [ "${DROPOUTGOING}" == "on" ]; then | |
824dc936 | 160 | iptables -A POLICYOUT -m limit --limit 10/minute -j LOG --log-prefix "DROP_OUTPUT " |
52c5ec83 | 161 | fi |
a211fee3 | 162 | iptables -A POLICYOUT -j DROP -m comment --comment "DROP_OUTPUT" |
52c5ec83 MT |
163 | ;; |
164 | esac | |
165 | ;; | |
166 | *) | |
a211fee3 MT |
167 | iptables -A POLICYOUT -j ACCEPT |
168 | iptables -A POLICYOUT -m comment --comment "DROP_OUTPUT" -j DROP | |
52c5ec83 MT |
169 | ;; |
170 | esac | |
aff15def AM |
171 | |
172 | exit 0 |