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Commit | Line | Data |
---|---|---|
3a1019f6 MT |
1 | #!/bin/sh |
2 | ||
0f5c5ce7 MT |
3 | . /etc/sysconfig/rc |
4 | . ${rc_functions} | |
5 | ||
3a1019f6 MT |
6 | eval $(/usr/local/bin/readhash /var/ipfire/ppp/settings) |
7 | eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings) | |
fe0cd647 | 8 | eval $(/usr/local/bin/readhash /var/ipfire/optionsfw/settings) |
3a1019f6 | 9 | IFACE=`/bin/cat /var/ipfire/red/iface 2> /dev/null | /usr/bin/tr -d '\012'` |
5462658e | 10 | if [ -z $IFACE ]; then |
5b0eca95 AF |
11 | IFACE="red0" |
12 | fi | |
3a1019f6 MT |
13 | |
14 | if [ -f /var/ipfire/red/device ]; then | |
15 | DEVICE=`/bin/cat /var/ipfire/red/device 2> /dev/null | /usr/bin/tr -d '\012'` | |
16 | fi | |
17 | ||
ce31144c MT |
18 | NAT_MASK="0x0f000000" |
19 | ||
3fa8300e MT |
20 | IPS_REPEAT_MARK="0x80000000" |
21 | IPS_REPEAT_MASK="0x80000000" | |
22 | IPS_BYPASS_MARK="0x40000000" | |
23 | IPS_BYPASS_MASK="0x40000000" | |
24 | ||
c581b670 MT |
25 | function iptables() { |
26 | /sbin/iptables --wait "$@" | |
27 | } | |
28 | ||
3a1019f6 MT |
29 | iptables_init() { |
30 | # Flush all rules and delete all custom chains | |
c581b670 MT |
31 | iptables -F |
32 | iptables -t nat -F | |
33 | iptables -t mangle -F | |
b1109b8a | 34 | iptables -t raw -F |
c581b670 MT |
35 | iptables -X |
36 | iptables -t nat -X | |
37 | iptables -t mangle -X | |
b1109b8a | 38 | iptables -t raw -X |
3a1019f6 MT |
39 | |
40 | # Set up policies | |
c581b670 MT |
41 | iptables -P INPUT DROP |
42 | iptables -P FORWARD DROP | |
43 | iptables -P OUTPUT ACCEPT | |
3a1019f6 | 44 | |
78b65ea7 MT |
45 | # Enable TRACE logging to syslog |
46 | modprobe nf_log_ipv4 | |
47 | sysctl -q -w net.netfilter.nf_log.2=nf_log_ipv4 | |
48 | ||
3fa8300e MT |
49 | # IPS Bypass Chain which stores the BYPASS bit in connection tracking |
50 | iptables -N IPSBYPASS | |
19357bc5 | 51 | iptables -A IPSBYPASS -j CONNMARK --save-mark --mask "$(( ~IPS_REPEAT_MASK & 0xffffffff ))" |
3fa8300e MT |
52 | |
53 | # Jump into bypass chain when the BYPASS bit is set | |
54 | for chain in INPUT FORWARD OUTPUT; do | |
55 | iptables -A "${chain}" -m mark \ | |
56 | --mark "$(( IPS_REPEAT_MARK | IPS_BYPASS_MARK ))/$(( IPS_REPEAT_MASK | IPS_BYPASS_MASK ))" -j IPSBYPASS | |
57 | done | |
58 | ||
3a1019f6 | 59 | # Empty LOG_DROP and LOG_REJECT chains |
c581b670 | 60 | iptables -N LOG_DROP |
8ee3a135 | 61 | iptables -A LOG_DROP -m limit --limit 10/second -j LOG |
c581b670 MT |
62 | iptables -A LOG_DROP -j DROP |
63 | iptables -N LOG_REJECT | |
8ee3a135 | 64 | iptables -A LOG_REJECT -m limit --limit 10/second -j LOG |
c581b670 | 65 | iptables -A LOG_REJECT -j REJECT |
3a1019f6 MT |
66 | |
67 | # This chain will log, then DROPs packets with certain bad combinations | |
ef7e9e52 | 68 | # of flags might indicate a port-scan attempt (xmas, null, etc.) |
c581b670 | 69 | iptables -N PSCAN |
5595bc03 | 70 | if [ "$DROPPORTSCAN" == "on" ]; then |
ef7e9e52 PM |
71 | iptables -A PSCAN -p tcp -m limit --limit 10/second -j LOG --log-prefix "DROP_TCP Scan " -m comment --comment "DROP_TCP PScan" |
72 | iptables -A PSCAN -p udp -m limit --limit 10/second -j LOG --log-prefix "DROP_UDP Scan " -m comment --comment "DROP_UDP PScan" | |
8ee3a135 PM |
73 | iptables -A PSCAN -p icmp -m limit --limit 10/second -j LOG --log-prefix "DROP_ICMP Scan " -m comment --comment "DROP_ICMP PScan" |
74 | iptables -A PSCAN -f -m limit --limit 10/second -j LOG --log-prefix "DROP_FRAG Scan " -m comment --comment "DROP_FRAG PScan" | |
5595bc03 | 75 | fi |
c581b670 | 76 | iptables -A PSCAN -j DROP -m comment --comment "DROP_PScan" |
3a1019f6 MT |
77 | |
78 | # New tcp packets without SYN set - could well be an obscure type of port scan | |
ef7e9e52 | 79 | # that's not covered above, may just be a broken Windows machine |
c581b670 | 80 | iptables -N NEWNOTSYN |
5595bc03 | 81 | if [ "$DROPNEWNOTSYN" == "on" ]; then |
8ee3a135 | 82 | iptables -A NEWNOTSYN -m limit --limit 10/second -j LOG --log-prefix "DROP_NEWNOTSYN " |
5595bc03 | 83 | fi |
c581b670 | 84 | iptables -A NEWNOTSYN -j DROP -m comment --comment "DROP_NEWNOTSYN" |
3a1019f6 | 85 | |
a36cd34e PM |
86 | # Log and subsequently drop spoofed packets or "martians", arriving from sources |
87 | # on interfaces where we don't expect them | |
88 | iptables -N SPOOFED_MARTIAN | |
89 | if [ "$DROPSPOOFEDMARTIAN" == "on" ]; then | |
90 | iptables -A SPOOFED_MARTIAN -m limit --limit 10/second -j LOG --log-prefix "DROP_SPOOFED_MARTIAN " | |
91 | fi | |
92 | iptables -A SPOOFED_MARTIAN -j DROP -m comment --comment "DROP_SPOOFED_MARTIAN" | |
93 | ||
3a1019f6 | 94 | # Chain to contain all the rules relating to bad TCP flags |
c581b670 | 95 | iptables -N BADTCP |
3a1019f6 | 96 | |
c581b670 MT |
97 | # Don't check loopback |
98 | iptables -A BADTCP -i lo -j RETURN | |
d8158ca6 | 99 | |
3a1019f6 | 100 | # Disallow packets frequently used by port-scanners |
dccbf1bf AF |
101 | # NMAP FIN/URG/PSH (XMAS scan) |
102 | iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH -j PSCAN | |
103 | # SYN/RST/ACK/FIN/URG | |
104 | iptables -A BADTCP -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j PSCAN | |
105 | # ALL/ALL | |
106 | iptables -A BADTCP -p tcp --tcp-flags ALL ALL -j PSCAN | |
107 | # FIN Stealth | |
c581b670 | 108 | iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN |
3a1019f6 | 109 | # SYN/RST (also catches xmas variants that set SYN+RST+...) |
c581b670 | 110 | iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN |
3a1019f6 | 111 | # SYN/FIN (QueSO or nmap OS probe) |
c581b670 | 112 | iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN |
dccbf1bf AF |
113 | # Null |
114 | iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN | |
3a1019f6 | 115 | # NEW TCP without SYN |
c581b670 | 116 | iptables -A BADTCP -p tcp ! --syn -m conntrack --ctstate NEW -j NEWNOTSYN |
b85d2a98 | 117 | |
c581b670 MT |
118 | iptables -A INPUT -p tcp -j BADTCP |
119 | iptables -A FORWARD -p tcp -j BADTCP | |
c0359d6d | 120 | |
b1109b8a | 121 | # Connection tracking chains |
5c1af49c PM |
122 | iptables -N CTINVALID |
123 | iptables -A CTINVALID -m limit --limit 10/second -j LOG --log-prefix "DROP_CTINVALID " | |
124 | iptables -A CTINVALID -j DROP -m comment --comment "DROP_CTINVALID" | |
125 | ||
c581b670 | 126 | iptables -N CONNTRACK |
b1109b8a | 127 | iptables -A CONNTRACK -m conntrack --ctstate ESTABLISHED -j ACCEPT |
5c1af49c | 128 | iptables -A CONNTRACK -m conntrack --ctstate INVALID -j CTINVALID |
0f535060 | 129 | iptables -A CONNTRACK -p icmp -m conntrack --ctstate RELATED -j ACCEPT |
b1109b8a | 130 | |
c825fcef MT |
131 | # Restore any connection marks |
132 | iptables -t mangle -A PREROUTING -j CONNMARK --restore-mark | |
133 | ||
ef7e9e52 | 134 | # Fix for braindead ISPs |
c581b670 | 135 | iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu |
3a1019f6 MT |
136 | |
137 | # CUSTOM chains, can be used by the users themselves | |
c581b670 MT |
138 | iptables -N CUSTOMINPUT |
139 | iptables -A INPUT -j CUSTOMINPUT | |
140 | iptables -N CUSTOMFORWARD | |
141 | iptables -A FORWARD -j CUSTOMFORWARD | |
142 | iptables -N CUSTOMOUTPUT | |
143 | iptables -A OUTPUT -j CUSTOMOUTPUT | |
144 | iptables -t nat -N CUSTOMPREROUTING | |
145 | iptables -t nat -A PREROUTING -j CUSTOMPREROUTING | |
146 | iptables -t nat -N CUSTOMPOSTROUTING | |
147 | iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING | |
3a1019f6 | 148 | |
97154d05 PM |
149 | # Log and drop any traffic from and to networks known as being hostile, posing |
150 | # a technical threat to our users (i. e. listed at Spamhaus DROP et al.) | |
37a9a0ba | 151 | iptables -N HOSTILE |
97154d05 | 152 | if [ "$DROPHOSTILE" == "on" ]; then |
37a9a0ba PM |
153 | iptables -A HOSTILE -m limit --limit 10/second -j LOG --log-prefix "DROP_HOSTILE " |
154 | iptables -A INPUT -i $IFACE -m geoip --src-cc XD -j HOSTILE | |
155 | iptables -A FORWARD -i $IFACE -m geoip --src-cc XD -j HOSTILE | |
156 | iptables -A FORWARD -o $IFACE -m geoip --dst-cc XD -j HOSTILE | |
157 | iptables -A OUTPUT -o $IFACE -m geoip --src-cc XD -j HOSTILE | |
97154d05 | 158 | fi |
37a9a0ba | 159 | iptables -A HOSTILE -j DROP -m comment --comment "DROP_HOSTILE" |
97154d05 | 160 | |
2a5b19c5 AF |
161 | # P2PBLOCK |
162 | iptables -N P2PBLOCK | |
163 | iptables -A INPUT -j P2PBLOCK | |
164 | iptables -A FORWARD -j P2PBLOCK | |
165 | iptables -A OUTPUT -j P2PBLOCK | |
0e7bfb13 | 166 | |
ef7e9e52 | 167 | # IPS (Guardian) chains |
c581b670 MT |
168 | iptables -N GUARDIAN |
169 | iptables -A INPUT -j GUARDIAN | |
170 | iptables -A FORWARD -j GUARDIAN | |
815eaff4 | 171 | |
80fbd899 MT |
172 | # Block non-established IPsec networks |
173 | iptables -N IPSECBLOCK | |
174 | iptables -A FORWARD -m policy --dir out --pol none -j IPSECBLOCK | |
175 | iptables -A OUTPUT -m policy --dir out --pol none -j IPSECBLOCK | |
176 | ||
1e555330 | 177 | # Block OpenVPN transfer networks |
c581b670 | 178 | iptables -N OVPNBLOCK |
a0a5c14f | 179 | iptables -A INPUT -i tun+ -j OVPNBLOCK |
a0a5c14f MT |
180 | iptables -A FORWARD -i tun+ -j OVPNBLOCK |
181 | iptables -A FORWARD -o tun+ -j OVPNBLOCK | |
1e555330 | 182 | |
ef7e9e52 | 183 | # IPS (Suricata) chains |
5dba8382 PM |
184 | iptables -N IPS_INPUT |
185 | iptables -N IPS_FORWARD | |
186 | iptables -N IPS_OUTPUT | |
3fa8300e MT |
187 | |
188 | for chain in INPUT FORWARD OUTPUT; do | |
189 | iptables -A "${chain}" -m mark --mark "0x0/$(( IPS_REPEAT_MASK | IPS_BYPASS_MASK ))" -j "IPS_${chain}" | |
190 | done | |
5dba8382 | 191 | |
51ab1de1 | 192 | # OpenVPN transfer network translation |
c581b670 MT |
193 | iptables -t nat -N OVPNNAT |
194 | iptables -t nat -A POSTROUTING -j OVPNNAT | |
51ab1de1 | 195 | |
daa1ceba | 196 | # IPTV chains for IGMPPROXY |
c581b670 MT |
197 | iptables -N IPTVINPUT |
198 | iptables -A INPUT -j IPTVINPUT | |
199 | iptables -N IPTVFORWARD | |
200 | iptables -A FORWARD -j IPTVFORWARD | |
daa1ceba | 201 | |
8e59a602 MT |
202 | # Allow to ping the firewall. |
203 | iptables -N ICMPINPUT | |
204 | iptables -A INPUT -j ICMPINPUT | |
205 | iptables -A ICMPINPUT -p icmp --icmp-type 8 -j ACCEPT | |
3a1019f6 | 206 | |
4b94860d | 207 | # Accept everything on loopback |
c581b670 | 208 | iptables -N LOOPBACK |
4b94860d AF |
209 | iptables -A LOOPBACK -i lo -j ACCEPT |
210 | iptables -A LOOPBACK -o lo -j ACCEPT | |
afc611d4 | 211 | |
a36cd34e PM |
212 | # Filter all packets with loopback addresses on non-loopback interfaces (spoofed) |
213 | iptables -A LOOPBACK -s 127.0.0.0/8 -j SPOOFED_MARTIAN | |
214 | iptables -A LOOPBACK -d 127.0.0.0/8 -j SPOOFED_MARTIAN | |
3b9a23ce MT |
215 | |
216 | for i in INPUT FORWARD OUTPUT; do | |
c581b670 | 217 | iptables -A ${i} -j LOOPBACK |
3b9a23ce | 218 | done |
afc611d4 | 219 | |
bbaa3613 AM |
220 | # Captive portal |
221 | iptables -N CAPTIVE_PORTAL | |
222 | iptables -N CAPTIVE_PORTAL_CLIENTS | |
223 | for i in INPUT FORWARD; do | |
224 | iptables -A ${i} -j CAPTIVE_PORTAL | |
225 | done | |
226 | ||
3a1019f6 | 227 | # Accept everything connected |
b85d2a98 | 228 | for i in INPUT FORWARD OUTPUT; do |
c581b670 | 229 | iptables -A ${i} -j CONNTRACK |
b85d2a98 MT |
230 | done |
231 | ||
8490e496 MT |
232 | # Allow DHCP |
233 | iptables -N DHCPINPUT | |
234 | iptables -A DHCPINPUT -p udp --sport 68 --dport 67 -j ACCEPT | |
235 | iptables -A DHCPINPUT -p tcp --sport 68 --dport 67 -j ACCEPT | |
236 | ||
237 | iptables -N DHCPOUTPUT | |
238 | iptables -A DHCPOUTPUT -p udp --sport 67 --dport 68 -j ACCEPT | |
239 | iptables -A DHCPOUTPUT -p tcp --sport 67 --dport 68 -j ACCEPT | |
240 | ||
241 | # Allow DHCP on GREEN | |
242 | iptables -N DHCPGREENINPUT | |
243 | iptables -N DHCPGREENOUTPUT | |
244 | if [ -n "${GREEN_DEV}" ]; then | |
245 | iptables -A INPUT -i "${GREEN_DEV}" -j DHCPGREENINPUT | |
246 | iptables -A OUTPUT -o "${GREEN_DEV}" -j DHCPGREENOUTPUT | |
247 | fi | |
248 | ||
ef7e9e52 | 249 | # Allow DHCP on BLUE to be turned on/off |
8490e496 MT |
250 | iptables -N DHCPBLUEINPUT |
251 | iptables -N DHCPBLUEOUTPUT | |
252 | if [ -n "${BLUE_DEV}" ]; then | |
253 | iptables -A INPUT -i "${BLUE_DEV}" -j DHCPBLUEINPUT | |
254 | iptables -A OUTPUT -o "${BLUE_DEV}" -j DHCPBLUEOUTPUT | |
255 | fi | |
256 | ||
4d25c1f3 PM |
257 | # Tor (inbound) |
258 | iptables -N TOR_INPUT | |
259 | iptables -A INPUT -j TOR_INPUT | |
260 | ||
0e6eca78 MT |
261 | # Location Block |
262 | iptables -N LOCATIONBLOCK | |
263 | iptables -A INPUT -j LOCATIONBLOCK | |
264 | iptables -A FORWARD -j LOCATIONBLOCK | |
cab02e2a | 265 | |
5fd30232 | 266 | # trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything |
c581b670 MT |
267 | iptables -N IPSECINPUT |
268 | iptables -N IPSECFORWARD | |
269 | iptables -N IPSECOUTPUT | |
270 | iptables -A INPUT -j IPSECINPUT | |
271 | iptables -A FORWARD -j IPSECFORWARD | |
272 | iptables -A OUTPUT -j IPSECOUTPUT | |
273 | iptables -t nat -N IPSECNAT | |
274 | iptables -t nat -A POSTROUTING -j IPSECNAT | |
b68e5c14 | 275 | |
3a1019f6 | 276 | # localhost and ethernet. |
c0e0848f MT |
277 | # Always allow accessing the web GUI from GREEN. |
278 | iptables -N GUIINPUT | |
279 | iptables -A INPUT -j GUIINPUT | |
48a7737f MT |
280 | if [ -n "${GREEN_DEV}" ]; then |
281 | iptables -A GUIINPUT -i "${GREEN_DEV}" -p tcp --dport 444 -j ACCEPT | |
282 | fi | |
8490e496 | 283 | |
81393987 | 284 | # WIRELESS chains |
c581b670 MT |
285 | iptables -N WIRELESSINPUT |
286 | iptables -A INPUT -m conntrack --ctstate NEW -j WIRELESSINPUT | |
287 | iptables -N WIRELESSFORWARD | |
288 | iptables -A FORWARD -m conntrack --ctstate NEW -j WIRELESSFORWARD | |
987b75bc | 289 | |
ab4876ad | 290 | # OpenVPN |
c581b670 MT |
291 | iptables -N OVPNINPUT |
292 | iptables -A INPUT -j OVPNINPUT | |
ab4876ad | 293 | |
4d25c1f3 | 294 | # Tor (outbound) |
5fc5f703 PM |
295 | iptables -N TOR_OUTPUT |
296 | iptables -A OUTPUT -j TOR_OUTPUT | |
0e7bfb13 | 297 | |
d5f1422d | 298 | # Jump into the actual firewall ruleset. |
c581b670 MT |
299 | iptables -N INPUTFW |
300 | iptables -A INPUT -j INPUTFW | |
d5f1422d | 301 | |
c581b670 MT |
302 | iptables -N OUTGOINGFW |
303 | iptables -A OUTPUT -j OUTGOINGFW | |
d5f1422d | 304 | |
c581b670 MT |
305 | iptables -N FORWARDFW |
306 | iptables -A FORWARD -j FORWARDFW | |
d5f1422d | 307 | |
fac38614 | 308 | # SNAT rules |
c581b670 MT |
309 | iptables -t nat -N NAT_SOURCE |
310 | iptables -t nat -A POSTROUTING -j NAT_SOURCE | |
fac38614 | 311 | |
9bb40553 MT |
312 | # Captive Portal |
313 | iptables -t nat -N CAPTIVE_PORTAL | |
314 | iptables -t nat -A PREROUTING -j CAPTIVE_PORTAL | |
315 | ||
bb12dd7b | 316 | # Custom prerouting chains (for transparent proxy) |
c581b670 MT |
317 | iptables -t nat -N SQUID |
318 | iptables -t nat -A PREROUTING -j SQUID | |
bb12dd7b MT |
319 | |
320 | # DNAT rules | |
c581b670 MT |
321 | iptables -t nat -N NAT_DESTINATION |
322 | iptables -t nat -A PREROUTING -j NAT_DESTINATION | |
99f11a16 | 323 | iptables -t nat -A OUTPUT -j NAT_DESTINATION |
bb12dd7b | 324 | |
6e87f0aa MT |
325 | iptables -t mangle -N NAT_DESTINATION |
326 | iptables -t mangle -A PREROUTING -j NAT_DESTINATION | |
327 | ||
328 | iptables -t nat -N NAT_DESTINATION_FIX | |
329 | iptables -t nat -A POSTROUTING -j NAT_DESTINATION_FIX | |
330 | ||
48a7737f MT |
331 | if [ -n "${GREEN_ADDRESS}" ]; then |
332 | iptables -t nat -A NAT_DESTINATION_FIX \ | |
ce31144c | 333 | -m mark --mark "0x01000000/${NAT_MASK}" -j SNAT --to-source "${GREEN_ADDRESS}" |
48a7737f | 334 | fi |
6e87f0aa MT |
335 | |
336 | if [ -n "${BLUE_ADDRESS}" ]; then | |
337 | iptables -t nat -A NAT_DESTINATION_FIX \ | |
ce31144c | 338 | -m mark --mark "0x02000000/${NAT_MASK}" -j SNAT --to-source "${BLUE_ADDRESS}" |
6e87f0aa MT |
339 | fi |
340 | ||
341 | if [ -n "${ORANGE_ADDRESS}" ]; then | |
342 | iptables -t nat -A NAT_DESTINATION_FIX \ | |
ce31144c | 343 | -m mark --mark "0x04000000/${NAT_MASK}" -j SNAT --to-source "${ORANGE_ADDRESS}" |
6e87f0aa MT |
344 | fi |
345 | ||
6e87f0aa MT |
346 | # RED chain, used for the red interface |
347 | iptables -N REDINPUT | |
348 | iptables -A INPUT -j REDINPUT | |
349 | iptables -N REDFORWARD | |
350 | iptables -A FORWARD -j REDFORWARD | |
351 | iptables -t nat -N REDNAT | |
352 | iptables -t nat -A POSTROUTING -j REDNAT | |
353 | ||
6c920b19 MT |
354 | # Populate IPsec chains |
355 | /usr/lib/firewall/ipsec-policy | |
80fbd899 | 356 | |
ab4876ad MT |
357 | # Apply OpenVPN firewall rules |
358 | /usr/local/bin/openvpnctrl --firewall-rules | |
ff4770c7 AM |
359 | |
360 | # run wirelessctrl | |
361 | /usr/local/bin/wirelessctrl | |
362 | ||
1722701a AM |
363 | # run captivectrl |
364 | /usr/local/bin/captivectrl | |
365 | ||
c581b670 MT |
366 | # POLICY CHAIN |
367 | iptables -N POLICYIN | |
368 | iptables -A INPUT -j POLICYIN | |
369 | iptables -N POLICYFWD | |
370 | iptables -A FORWARD -j POLICYFWD | |
371 | iptables -N POLICYOUT | |
372 | iptables -A OUTPUT -j POLICYOUT | |
b324de14 | 373 | |
bb383423 | 374 | # Initialize firewall policies. |
5d7faa45 | 375 | /usr/sbin/firewall-policy |
690b0bd7 | 376 | |
bb383423 | 377 | # Install firewall rules for the red interface. |
4b12aa41 TE |
378 | iptables_red_up |
379 | ||
380 | # If red has not been brought up yet, we will | |
381 | # add the blocking rules for MASQUERADE | |
382 | if [ ! -e "/var/ipfire/red/active" ]; then | |
383 | iptables_red_down | |
384 | fi | |
ff4770c7 | 385 | } |
3a1019f6 | 386 | |
4b12aa41 | 387 | iptables_red_up() { |
c581b670 MT |
388 | iptables -F REDINPUT |
389 | iptables -F REDFORWARD | |
390 | iptables -t nat -F REDNAT | |
3a1019f6 | 391 | |
e83ae0d4 PM |
392 | # Prohibit spoofing our own IP address on RED |
393 | if [ -f /var/ipfire/red/active ]; then | |
394 | REDIP="$( cat /var/ipfire/red/local-ipaddress )"; | |
395 | ||
396 | if [ "$IFACE" != "" ]; then | |
397 | iptables -A REDINPUT -s $REDIP -i $IFACE -j SPOOFED_MARTIAN | |
398 | elif [ "$DEVICE" != "" ]; then | |
399 | iptables -A REDINPUT -s $REDIP -i $DEVICE -j SPOOFED_MARTIAN | |
400 | fi | |
401 | fi | |
402 | ||
ff4770c7 AM |
403 | # PPPoE / PPTP Device |
404 | if [ "$IFACE" != "" ]; then | |
405 | # PPPoE / PPTP | |
406 | if [ "$DEVICE" != "" ]; then | |
c581b670 | 407 | iptables -A REDINPUT -i $DEVICE -j ACCEPT |
ff4770c7 AM |
408 | fi |
409 | if [ "$RED_TYPE" == "PPTP" -o "$RED_TYPE" == "PPPOE" ]; then | |
410 | if [ "$RED_DEV" != "" ]; then | |
c581b670 | 411 | iptables -A REDINPUT -i $RED_DEV -j ACCEPT |
ff4770c7 AM |
412 | fi |
413 | fi | |
3a1019f6 | 414 | fi |
ff4770c7 AM |
415 | |
416 | # PPTP over DHCP | |
417 | if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then | |
c581b670 MT |
418 | iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT |
419 | iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT | |
3a1019f6 MT |
420 | fi |
421 | ||
ff4770c7 AM |
422 | if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then |
423 | # DHCP | |
424 | if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then | |
c581b670 MT |
425 | iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT |
426 | iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT | |
ff4770c7 AM |
427 | fi |
428 | if [ "$METHOD" == "DHCP" -a "$PROTOCOL" == "RFC1483" ]; then | |
c581b670 MT |
429 | iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT |
430 | iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT | |
ff4770c7 AM |
431 | fi |
432 | ||
51c4b73f | 433 | # Outgoing masquerading (don't masqerade IPsec) |
e850a614 | 434 | iptables -t nat -A REDNAT -m policy --pol ipsec --dir=out -o "${IFACE}" -j RETURN |
c926c637 | 435 | |
60fcb241 AF |
436 | if [ "${IFACE}" = "${GREEN_DEV}" ]; then |
437 | iptables -t nat -A REDNAT -i "${GREEN_DEV}" -o "${IFACE}" -j RETURN | |
c926c637 | 438 | fi |
c400fe4c | 439 | |
983d471f | 440 | local NO_MASQ_NETWORKS |
83ef9c40 MT |
441 | |
442 | if [ "${MASQUERADE_GREEN}" = "off" ]; then | |
983d471f | 443 | NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${GREEN_NETADDRESS}/${GREEN_NETMASK}" |
83ef9c40 MT |
444 | fi |
445 | ||
446 | if [ "${MASQUERADE_BLUE}" = "off" ]; then | |
983d471f | 447 | NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${BLUE_NETADDRESS}/${BLUE_NETMASK}" |
83ef9c40 MT |
448 | fi |
449 | ||
450 | if [ "${MASQUERADE_ORANGE}" = "off" ]; then | |
983d471f | 451 | NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${ORANGE_NETADDRESS}/${ORANGE_NETMASK}" |
83ef9c40 MT |
452 | fi |
453 | ||
983d471f MT |
454 | local network |
455 | for network in ${NO_MASQ_NETWORKS}; do | |
456 | iptables -t nat -A REDNAT -s "${network}" -o "${IFACE}" -j RETURN | |
83ef9c40 MT |
457 | done |
458 | ||
459 | # Masquerade everything else | |
460 | iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE | |
6be0579b | 461 | fi |
66f6b279 MT |
462 | |
463 | # Reload all rules. | |
55a5bcae | 464 | /usr/local/bin/firewallctrl |
ff4770c7 AM |
465 | } |
466 | ||
4b12aa41 TE |
467 | iptables_red_down() { |
468 | # Prohibit packets to reach the masquerading rule | |
e01e07ec | 469 | # while the WAN interface is down - this is required to |
4b12aa41 TE |
470 | # circumvent udp related NAT issues |
471 | # http://forum.ipfire.org/index.php?topic=11127.0 | |
e7204c2d MT |
472 | if [ -n "${IFACE}" ]; then |
473 | iptables -F REDFORWARD | |
474 | iptables -A REDFORWARD -o "${IFACE}" -j DROP | |
475 | fi | |
4b12aa41 TE |
476 | |
477 | # Reload all rules. | |
478 | /usr/local/bin/firewallctrl | |
479 | } | |
480 | ||
ff4770c7 AM |
481 | # See how we were called. |
482 | case "$1" in | |
483 | start) | |
7d7740a4 | 484 | boot_mesg "Setting up firewall" |
ff4770c7 | 485 | iptables_init |
7d7740a4 | 486 | evaluate_retval |
6be0579b | 487 | ;; |
4b12aa41 | 488 | reload|up) |
7d7740a4 | 489 | boot_mesg "Reloading firewall" |
4b12aa41 | 490 | iptables_red_up |
7d7740a4 | 491 | evaluate_retval |
3a1019f6 | 492 | ;; |
4b12aa41 TE |
493 | down) |
494 | boot_mesg "Disabling firewall access to RED" | |
495 | iptables_red_down | |
496 | evaluate_retval | |
497 | ;; | |
3a1019f6 | 498 | restart) |
3a1019f6 MT |
499 | $0 start |
500 | ;; | |
501 | *) | |
ff4770c7 | 502 | echo "Usage: $0 {start|reload|restart}" |
3a1019f6 MT |
503 | exit 1 |
504 | ;; | |
505 | esac | |
506 | ||
507 | exit 0 |