]>
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 [ "$DROPSPOOFEDMARTIAN" == "on" ]; then | |
90 | iptables -A SPOOFED_MARTIAN -m limit --limit 10/second -j LOG --log-prefix "DROP_SPOOFED_MARTIAN " | |
91 | fi | |
92 | iptables -A SPOOFED_MARTIAN -j DROP -m comment --comment "DROP_SPOOFED_MARTIAN" | |
93 | ||
3a1019f6 | 94 | # Chain to contain all the rules relating to bad TCP flags |
c581b670 | 95 | iptables -N BADTCP |
3a1019f6 | 96 | |
c581b670 MT |
97 | # Don't check loopback |
98 | iptables -A BADTCP -i lo -j RETURN | |
d8158ca6 | 99 | |
3a1019f6 | 100 | # Disallow packets frequently used by port-scanners |
dccbf1bf AF |
101 | # NMAP FIN/URG/PSH (XMAS scan) |
102 | iptables -A BADTCP -p tcp --tcp-flags ALL FIN,URG,PSH -j PSCAN | |
103 | # SYN/RST/ACK/FIN/URG | |
104 | iptables -A BADTCP -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j PSCAN | |
105 | # ALL/ALL | |
106 | iptables -A BADTCP -p tcp --tcp-flags ALL ALL -j PSCAN | |
107 | # FIN Stealth | |
c581b670 | 108 | iptables -A BADTCP -p tcp --tcp-flags ALL FIN -j PSCAN |
3a1019f6 | 109 | # SYN/RST (also catches xmas variants that set SYN+RST+...) |
c581b670 | 110 | iptables -A BADTCP -p tcp --tcp-flags SYN,RST SYN,RST -j PSCAN |
3a1019f6 | 111 | # SYN/FIN (QueSO or nmap OS probe) |
c581b670 | 112 | iptables -A BADTCP -p tcp --tcp-flags SYN,FIN SYN,FIN -j PSCAN |
dccbf1bf AF |
113 | # Null |
114 | iptables -A BADTCP -p tcp --tcp-flags ALL NONE -j PSCAN | |
3a1019f6 | 115 | # NEW TCP without SYN |
c581b670 | 116 | iptables -A BADTCP -p tcp ! --syn -m conntrack --ctstate NEW -j NEWNOTSYN |
b85d2a98 | 117 | |
c581b670 MT |
118 | iptables -A INPUT -p tcp -j BADTCP |
119 | iptables -A FORWARD -p tcp -j BADTCP | |
c0359d6d | 120 | |
b1109b8a | 121 | # Connection tracking chains |
5c1af49c | 122 | iptables -N CTINVALID |
926d840f PM |
123 | if [ "$LOGDROPCTINVALID" == "on" ]; then |
124 | iptables -A CTINVALID -m limit --limit 10/second -j LOG --log-prefix "DROP_CTINVALID " | |
125 | fi | |
5c1af49c PM |
126 | iptables -A CTINVALID -j DROP -m comment --comment "DROP_CTINVALID" |
127 | ||
c581b670 | 128 | iptables -N CONNTRACK |
b1109b8a | 129 | iptables -A CONNTRACK -m conntrack --ctstate ESTABLISHED -j ACCEPT |
5c1af49c | 130 | iptables -A CONNTRACK -m conntrack --ctstate INVALID -j CTINVALID |
0f535060 | 131 | iptables -A CONNTRACK -p icmp -m conntrack --ctstate RELATED -j ACCEPT |
b1109b8a | 132 | |
c825fcef MT |
133 | # Restore any connection marks |
134 | iptables -t mangle -A PREROUTING -j CONNMARK --restore-mark | |
135 | ||
ef7e9e52 | 136 | # Fix for braindead ISPs |
c581b670 | 137 | iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN -j TCPMSS --clamp-mss-to-pmtu |
3a1019f6 MT |
138 | |
139 | # CUSTOM chains, can be used by the users themselves | |
c581b670 MT |
140 | iptables -N CUSTOMINPUT |
141 | iptables -A INPUT -j CUSTOMINPUT | |
142 | iptables -N CUSTOMFORWARD | |
143 | iptables -A FORWARD -j CUSTOMFORWARD | |
144 | iptables -N CUSTOMOUTPUT | |
145 | iptables -A OUTPUT -j CUSTOMOUTPUT | |
146 | iptables -t nat -N CUSTOMPREROUTING | |
147 | iptables -t nat -A PREROUTING -j CUSTOMPREROUTING | |
148 | iptables -t nat -N CUSTOMPOSTROUTING | |
149 | iptables -t nat -A POSTROUTING -j CUSTOMPOSTROUTING | |
3a1019f6 | 150 | |
97154d05 PM |
151 | # Log and drop any traffic from and to networks known as being hostile, posing |
152 | # a technical threat to our users (i. e. listed at Spamhaus DROP et al.) | |
37a9a0ba | 153 | iptables -N HOSTILE |
97154d05 | 154 | if [ "$DROPHOSTILE" == "on" ]; then |
37a9a0ba PM |
155 | iptables -A HOSTILE -m limit --limit 10/second -j LOG --log-prefix "DROP_HOSTILE " |
156 | iptables -A INPUT -i $IFACE -m geoip --src-cc XD -j HOSTILE | |
157 | iptables -A FORWARD -i $IFACE -m geoip --src-cc XD -j HOSTILE | |
158 | iptables -A FORWARD -o $IFACE -m geoip --dst-cc XD -j HOSTILE | |
159 | iptables -A OUTPUT -o $IFACE -m geoip --src-cc XD -j HOSTILE | |
97154d05 | 160 | fi |
37a9a0ba | 161 | iptables -A HOSTILE -j DROP -m comment --comment "DROP_HOSTILE" |
97154d05 | 162 | |
2a5b19c5 AF |
163 | # P2PBLOCK |
164 | iptables -N P2PBLOCK | |
165 | iptables -A INPUT -j P2PBLOCK | |
166 | iptables -A FORWARD -j P2PBLOCK | |
167 | iptables -A OUTPUT -j P2PBLOCK | |
0e7bfb13 | 168 | |
ef7e9e52 | 169 | # IPS (Guardian) chains |
c581b670 MT |
170 | iptables -N GUARDIAN |
171 | iptables -A INPUT -j GUARDIAN | |
172 | iptables -A FORWARD -j GUARDIAN | |
815eaff4 | 173 | |
80fbd899 MT |
174 | # Block non-established IPsec networks |
175 | iptables -N IPSECBLOCK | |
176 | iptables -A FORWARD -m policy --dir out --pol none -j IPSECBLOCK | |
177 | iptables -A OUTPUT -m policy --dir out --pol none -j IPSECBLOCK | |
178 | ||
1e555330 | 179 | # Block OpenVPN transfer networks |
c581b670 | 180 | iptables -N OVPNBLOCK |
a0a5c14f | 181 | iptables -A INPUT -i tun+ -j OVPNBLOCK |
a0a5c14f MT |
182 | iptables -A FORWARD -i tun+ -j OVPNBLOCK |
183 | iptables -A FORWARD -o tun+ -j OVPNBLOCK | |
1e555330 | 184 | |
ef7e9e52 | 185 | # IPS (Suricata) chains |
5dba8382 PM |
186 | iptables -N IPS_INPUT |
187 | iptables -N IPS_FORWARD | |
188 | iptables -N IPS_OUTPUT | |
3fa8300e MT |
189 | |
190 | for chain in INPUT FORWARD OUTPUT; do | |
191 | iptables -A "${chain}" -m mark --mark "0x0/$(( IPS_REPEAT_MASK | IPS_BYPASS_MASK ))" -j "IPS_${chain}" | |
192 | done | |
5dba8382 | 193 | |
51ab1de1 | 194 | # OpenVPN transfer network translation |
c581b670 MT |
195 | iptables -t nat -N OVPNNAT |
196 | iptables -t nat -A POSTROUTING -j OVPNNAT | |
51ab1de1 | 197 | |
daa1ceba | 198 | # IPTV chains for IGMPPROXY |
c581b670 MT |
199 | iptables -N IPTVINPUT |
200 | iptables -A INPUT -j IPTVINPUT | |
201 | iptables -N IPTVFORWARD | |
202 | iptables -A FORWARD -j IPTVFORWARD | |
daa1ceba | 203 | |
8e59a602 MT |
204 | # Allow to ping the firewall. |
205 | iptables -N ICMPINPUT | |
206 | iptables -A INPUT -j ICMPINPUT | |
207 | iptables -A ICMPINPUT -p icmp --icmp-type 8 -j ACCEPT | |
3a1019f6 | 208 | |
4b94860d | 209 | # Accept everything on loopback |
c581b670 | 210 | iptables -N LOOPBACK |
4b94860d AF |
211 | iptables -A LOOPBACK -i lo -j ACCEPT |
212 | iptables -A LOOPBACK -o lo -j ACCEPT | |
afc611d4 | 213 | |
a36cd34e PM |
214 | # Filter all packets with loopback addresses on non-loopback interfaces (spoofed) |
215 | iptables -A LOOPBACK -s 127.0.0.0/8 -j SPOOFED_MARTIAN | |
216 | iptables -A LOOPBACK -d 127.0.0.0/8 -j SPOOFED_MARTIAN | |
3b9a23ce MT |
217 | |
218 | for i in INPUT FORWARD OUTPUT; do | |
c581b670 | 219 | iptables -A ${i} -j LOOPBACK |
3b9a23ce | 220 | done |
afc611d4 | 221 | |
bbaa3613 AM |
222 | # Captive portal |
223 | iptables -N CAPTIVE_PORTAL | |
224 | iptables -N CAPTIVE_PORTAL_CLIENTS | |
225 | for i in INPUT FORWARD; do | |
226 | iptables -A ${i} -j CAPTIVE_PORTAL | |
227 | done | |
228 | ||
3a1019f6 | 229 | # Accept everything connected |
b85d2a98 | 230 | for i in INPUT FORWARD OUTPUT; do |
c581b670 | 231 | iptables -A ${i} -j CONNTRACK |
b85d2a98 MT |
232 | done |
233 | ||
8490e496 MT |
234 | # Allow DHCP |
235 | iptables -N DHCPINPUT | |
236 | iptables -A DHCPINPUT -p udp --sport 68 --dport 67 -j ACCEPT | |
237 | iptables -A DHCPINPUT -p tcp --sport 68 --dport 67 -j ACCEPT | |
238 | ||
239 | iptables -N DHCPOUTPUT | |
240 | iptables -A DHCPOUTPUT -p udp --sport 67 --dport 68 -j ACCEPT | |
241 | iptables -A DHCPOUTPUT -p tcp --sport 67 --dport 68 -j ACCEPT | |
242 | ||
243 | # Allow DHCP on GREEN | |
244 | iptables -N DHCPGREENINPUT | |
245 | iptables -N DHCPGREENOUTPUT | |
246 | if [ -n "${GREEN_DEV}" ]; then | |
247 | iptables -A INPUT -i "${GREEN_DEV}" -j DHCPGREENINPUT | |
248 | iptables -A OUTPUT -o "${GREEN_DEV}" -j DHCPGREENOUTPUT | |
249 | fi | |
250 | ||
ef7e9e52 | 251 | # Allow DHCP on BLUE to be turned on/off |
8490e496 MT |
252 | iptables -N DHCPBLUEINPUT |
253 | iptables -N DHCPBLUEOUTPUT | |
254 | if [ -n "${BLUE_DEV}" ]; then | |
255 | iptables -A INPUT -i "${BLUE_DEV}" -j DHCPBLUEINPUT | |
256 | iptables -A OUTPUT -o "${BLUE_DEV}" -j DHCPBLUEOUTPUT | |
257 | fi | |
258 | ||
4d25c1f3 PM |
259 | # Tor (inbound) |
260 | iptables -N TOR_INPUT | |
261 | iptables -A INPUT -j TOR_INPUT | |
262 | ||
0e6eca78 MT |
263 | # Location Block |
264 | iptables -N LOCATIONBLOCK | |
265 | iptables -A INPUT -j LOCATIONBLOCK | |
266 | iptables -A FORWARD -j LOCATIONBLOCK | |
cab02e2a | 267 | |
5fd30232 | 268 | # trafic from ipsecX/TUN/TAP interfaces, before "-i GREEN_DEV" accept everything |
c581b670 MT |
269 | iptables -N IPSECINPUT |
270 | iptables -N IPSECFORWARD | |
271 | iptables -N IPSECOUTPUT | |
272 | iptables -A INPUT -j IPSECINPUT | |
273 | iptables -A FORWARD -j IPSECFORWARD | |
274 | iptables -A OUTPUT -j IPSECOUTPUT | |
275 | iptables -t nat -N IPSECNAT | |
276 | iptables -t nat -A POSTROUTING -j IPSECNAT | |
b68e5c14 | 277 | |
3a1019f6 | 278 | # localhost and ethernet. |
c0e0848f MT |
279 | # Always allow accessing the web GUI from GREEN. |
280 | iptables -N GUIINPUT | |
281 | iptables -A INPUT -j GUIINPUT | |
48a7737f MT |
282 | if [ -n "${GREEN_DEV}" ]; then |
283 | iptables -A GUIINPUT -i "${GREEN_DEV}" -p tcp --dport 444 -j ACCEPT | |
284 | fi | |
8490e496 | 285 | |
81393987 | 286 | # WIRELESS chains |
c581b670 MT |
287 | iptables -N WIRELESSINPUT |
288 | iptables -A INPUT -m conntrack --ctstate NEW -j WIRELESSINPUT | |
289 | iptables -N WIRELESSFORWARD | |
290 | iptables -A FORWARD -m conntrack --ctstate NEW -j WIRELESSFORWARD | |
987b75bc | 291 | |
ab4876ad | 292 | # OpenVPN |
c581b670 MT |
293 | iptables -N OVPNINPUT |
294 | iptables -A INPUT -j OVPNINPUT | |
ab4876ad | 295 | |
4d25c1f3 | 296 | # Tor (outbound) |
5fc5f703 PM |
297 | iptables -N TOR_OUTPUT |
298 | iptables -A OUTPUT -j TOR_OUTPUT | |
0e7bfb13 | 299 | |
d5f1422d | 300 | # Jump into the actual firewall ruleset. |
c581b670 MT |
301 | iptables -N INPUTFW |
302 | iptables -A INPUT -j INPUTFW | |
d5f1422d | 303 | |
c581b670 MT |
304 | iptables -N OUTGOINGFW |
305 | iptables -A OUTPUT -j OUTGOINGFW | |
d5f1422d | 306 | |
c581b670 MT |
307 | iptables -N FORWARDFW |
308 | iptables -A FORWARD -j FORWARDFW | |
d5f1422d | 309 | |
fac38614 | 310 | # SNAT rules |
c581b670 MT |
311 | iptables -t nat -N NAT_SOURCE |
312 | iptables -t nat -A POSTROUTING -j NAT_SOURCE | |
fac38614 | 313 | |
9bb40553 MT |
314 | # Captive Portal |
315 | iptables -t nat -N CAPTIVE_PORTAL | |
316 | iptables -t nat -A PREROUTING -j CAPTIVE_PORTAL | |
317 | ||
bb12dd7b | 318 | # Custom prerouting chains (for transparent proxy) |
c581b670 MT |
319 | iptables -t nat -N SQUID |
320 | iptables -t nat -A PREROUTING -j SQUID | |
bb12dd7b MT |
321 | |
322 | # DNAT rules | |
c581b670 MT |
323 | iptables -t nat -N NAT_DESTINATION |
324 | iptables -t nat -A PREROUTING -j NAT_DESTINATION | |
99f11a16 | 325 | iptables -t nat -A OUTPUT -j NAT_DESTINATION |
bb12dd7b | 326 | |
6e87f0aa MT |
327 | iptables -t mangle -N NAT_DESTINATION |
328 | iptables -t mangle -A PREROUTING -j NAT_DESTINATION | |
329 | ||
330 | iptables -t nat -N NAT_DESTINATION_FIX | |
331 | iptables -t nat -A POSTROUTING -j NAT_DESTINATION_FIX | |
332 | ||
48a7737f MT |
333 | if [ -n "${GREEN_ADDRESS}" ]; then |
334 | iptables -t nat -A NAT_DESTINATION_FIX \ | |
ce31144c | 335 | -m mark --mark "0x01000000/${NAT_MASK}" -j SNAT --to-source "${GREEN_ADDRESS}" |
48a7737f | 336 | fi |
6e87f0aa MT |
337 | |
338 | if [ -n "${BLUE_ADDRESS}" ]; then | |
339 | iptables -t nat -A NAT_DESTINATION_FIX \ | |
ce31144c | 340 | -m mark --mark "0x02000000/${NAT_MASK}" -j SNAT --to-source "${BLUE_ADDRESS}" |
6e87f0aa MT |
341 | fi |
342 | ||
343 | if [ -n "${ORANGE_ADDRESS}" ]; then | |
344 | iptables -t nat -A NAT_DESTINATION_FIX \ | |
ce31144c | 345 | -m mark --mark "0x04000000/${NAT_MASK}" -j SNAT --to-source "${ORANGE_ADDRESS}" |
6e87f0aa MT |
346 | fi |
347 | ||
6e87f0aa MT |
348 | # RED chain, used for the red interface |
349 | iptables -N REDINPUT | |
350 | iptables -A INPUT -j REDINPUT | |
351 | iptables -N REDFORWARD | |
352 | iptables -A FORWARD -j REDFORWARD | |
353 | iptables -t nat -N REDNAT | |
354 | iptables -t nat -A POSTROUTING -j REDNAT | |
355 | ||
6c920b19 MT |
356 | # Populate IPsec chains |
357 | /usr/lib/firewall/ipsec-policy | |
80fbd899 | 358 | |
ab4876ad MT |
359 | # Apply OpenVPN firewall rules |
360 | /usr/local/bin/openvpnctrl --firewall-rules | |
ff4770c7 AM |
361 | |
362 | # run wirelessctrl | |
363 | /usr/local/bin/wirelessctrl | |
364 | ||
1722701a AM |
365 | # run captivectrl |
366 | /usr/local/bin/captivectrl | |
367 | ||
c581b670 MT |
368 | # POLICY CHAIN |
369 | iptables -N POLICYIN | |
370 | iptables -A INPUT -j POLICYIN | |
371 | iptables -N POLICYFWD | |
372 | iptables -A FORWARD -j POLICYFWD | |
373 | iptables -N POLICYOUT | |
374 | iptables -A OUTPUT -j POLICYOUT | |
b324de14 | 375 | |
bb383423 | 376 | # Initialize firewall policies. |
5d7faa45 | 377 | /usr/sbin/firewall-policy |
690b0bd7 | 378 | |
bb383423 | 379 | # Install firewall rules for the red interface. |
4b12aa41 TE |
380 | iptables_red_up |
381 | ||
382 | # If red has not been brought up yet, we will | |
383 | # add the blocking rules for MASQUERADE | |
384 | if [ ! -e "/var/ipfire/red/active" ]; then | |
385 | iptables_red_down | |
386 | fi | |
ff4770c7 | 387 | } |
3a1019f6 | 388 | |
4b12aa41 | 389 | iptables_red_up() { |
c581b670 MT |
390 | iptables -F REDINPUT |
391 | iptables -F REDFORWARD | |
392 | iptables -t nat -F REDNAT | |
3a1019f6 | 393 | |
e83ae0d4 PM |
394 | # Prohibit spoofing our own IP address on RED |
395 | if [ -f /var/ipfire/red/active ]; then | |
396 | REDIP="$( cat /var/ipfire/red/local-ipaddress )"; | |
397 | ||
398 | if [ "$IFACE" != "" ]; then | |
399 | iptables -A REDINPUT -s $REDIP -i $IFACE -j SPOOFED_MARTIAN | |
400 | elif [ "$DEVICE" != "" ]; then | |
401 | iptables -A REDINPUT -s $REDIP -i $DEVICE -j SPOOFED_MARTIAN | |
402 | fi | |
403 | fi | |
404 | ||
ff4770c7 AM |
405 | # PPPoE / PPTP Device |
406 | if [ "$IFACE" != "" ]; then | |
407 | # PPPoE / PPTP | |
408 | if [ "$DEVICE" != "" ]; then | |
c581b670 | 409 | iptables -A REDINPUT -i $DEVICE -j ACCEPT |
ff4770c7 AM |
410 | fi |
411 | if [ "$RED_TYPE" == "PPTP" -o "$RED_TYPE" == "PPPOE" ]; then | |
412 | if [ "$RED_DEV" != "" ]; then | |
c581b670 | 413 | iptables -A REDINPUT -i $RED_DEV -j ACCEPT |
ff4770c7 AM |
414 | fi |
415 | fi | |
3a1019f6 | 416 | fi |
ff4770c7 AM |
417 | |
418 | # PPTP over DHCP | |
419 | if [ "$DEVICE" != "" -a "$TYPE" == "PPTP" -a "$METHOD" == "DHCP" ]; then | |
c581b670 MT |
420 | iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT |
421 | iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $DEVICE -j ACCEPT | |
3a1019f6 MT |
422 | fi |
423 | ||
ff4770c7 AM |
424 | if [ "$IFACE" != "" -a -f /var/ipfire/red/active ]; then |
425 | # DHCP | |
426 | if [ "$RED_DEV" != "" -a "$RED_TYPE" == "DHCP" ]; then | |
c581b670 MT |
427 | iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT |
428 | iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT | |
ff4770c7 AM |
429 | fi |
430 | if [ "$METHOD" == "DHCP" -a "$PROTOCOL" == "RFC1483" ]; then | |
c581b670 MT |
431 | iptables -A REDINPUT -p tcp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT |
432 | iptables -A REDINPUT -p udp --source-port 67 --destination-port 68 -i $IFACE -j ACCEPT | |
ff4770c7 AM |
433 | fi |
434 | ||
51c4b73f | 435 | # Outgoing masquerading (don't masqerade IPsec) |
e850a614 | 436 | iptables -t nat -A REDNAT -m policy --pol ipsec --dir=out -o "${IFACE}" -j RETURN |
c926c637 | 437 | |
60fcb241 AF |
438 | if [ "${IFACE}" = "${GREEN_DEV}" ]; then |
439 | iptables -t nat -A REDNAT -i "${GREEN_DEV}" -o "${IFACE}" -j RETURN | |
c926c637 | 440 | fi |
c400fe4c | 441 | |
983d471f | 442 | local NO_MASQ_NETWORKS |
83ef9c40 MT |
443 | |
444 | if [ "${MASQUERADE_GREEN}" = "off" ]; then | |
983d471f | 445 | NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${GREEN_NETADDRESS}/${GREEN_NETMASK}" |
83ef9c40 MT |
446 | fi |
447 | ||
448 | if [ "${MASQUERADE_BLUE}" = "off" ]; then | |
983d471f | 449 | NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${BLUE_NETADDRESS}/${BLUE_NETMASK}" |
83ef9c40 MT |
450 | fi |
451 | ||
452 | if [ "${MASQUERADE_ORANGE}" = "off" ]; then | |
983d471f | 453 | NO_MASQ_NETWORKS="${NO_MASQ_NETWORKS} ${ORANGE_NETADDRESS}/${ORANGE_NETMASK}" |
83ef9c40 MT |
454 | fi |
455 | ||
983d471f MT |
456 | local network |
457 | for network in ${NO_MASQ_NETWORKS}; do | |
458 | iptables -t nat -A REDNAT -s "${network}" -o "${IFACE}" -j RETURN | |
83ef9c40 MT |
459 | done |
460 | ||
461 | # Masquerade everything else | |
462 | iptables -t nat -A REDNAT -o $IFACE -j MASQUERADE | |
6be0579b | 463 | fi |
66f6b279 MT |
464 | |
465 | # Reload all rules. | |
55a5bcae | 466 | /usr/local/bin/firewallctrl |
ff4770c7 AM |
467 | } |
468 | ||
4b12aa41 TE |
469 | iptables_red_down() { |
470 | # Prohibit packets to reach the masquerading rule | |
e01e07ec | 471 | # while the WAN interface is down - this is required to |
4b12aa41 TE |
472 | # circumvent udp related NAT issues |
473 | # http://forum.ipfire.org/index.php?topic=11127.0 | |
e7204c2d MT |
474 | if [ -n "${IFACE}" ]; then |
475 | iptables -F REDFORWARD | |
476 | iptables -A REDFORWARD -o "${IFACE}" -j DROP | |
477 | fi | |
4b12aa41 TE |
478 | |
479 | # Reload all rules. | |
480 | /usr/local/bin/firewallctrl | |
481 | } | |
482 | ||
ff4770c7 AM |
483 | # See how we were called. |
484 | case "$1" in | |
485 | start) | |
7d7740a4 | 486 | boot_mesg "Setting up firewall" |
ff4770c7 | 487 | iptables_init |
7d7740a4 | 488 | evaluate_retval |
6be0579b | 489 | ;; |
4b12aa41 | 490 | reload|up) |
7d7740a4 | 491 | boot_mesg "Reloading firewall" |
4b12aa41 | 492 | iptables_red_up |
7d7740a4 | 493 | evaluate_retval |
3a1019f6 | 494 | ;; |
4b12aa41 TE |
495 | down) |
496 | boot_mesg "Disabling firewall access to RED" | |
497 | iptables_red_down | |
498 | evaluate_retval | |
499 | ;; | |
3a1019f6 | 500 | restart) |
3a1019f6 MT |
501 | $0 start |
502 | ;; | |
503 | *) | |
ff4770c7 | 504 | echo "Usage: $0 {start|reload|restart}" |
3a1019f6 MT |
505 | exit 1 |
506 | ;; | |
507 | esac | |
508 | ||
509 | exit 0 |