Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | # |
2 | # IP netfilter configuration | |
3 | # | |
4 | ||
5 | menu "IP: Netfilter Configuration" | |
6 | depends on INET && NETFILTER | |
7 | ||
73e4022f KK |
8 | config NF_DEFRAG_IPV4 |
9 | tristate | |
10 | default n | |
11 | ||
9fb9cbb1 | 12 | config NF_CONNTRACK_IPV4 |
c9386cfd PM |
13 | tristate "IPv4 connection tracking support (required for NAT)" |
14 | depends on NF_CONNTRACK | |
33b8e776 | 15 | default m if NETFILTER_ADVANCED=n |
73e4022f | 16 | select NF_DEFRAG_IPV4 |
9fb9cbb1 YK |
17 | ---help--- |
18 | Connection tracking keeps a record of what packets have passed | |
19 | through your machine, in order to figure out how they are related | |
20 | into connections. | |
21 | ||
22 | This is IPv4 support on Layer 3 independent connection tracking. | |
23 | Layer 3 independent connection tracking is experimental scheme | |
24 | which generalize ip_conntrack to support other layer 3 protocols. | |
25 | ||
26 | To compile it as a module, choose M here. If unsure, say N. | |
27 | ||
a999e683 PM |
28 | config NF_CONNTRACK_PROC_COMPAT |
29 | bool "proc/sysctl compatibility with old connection tracking" | |
54b07dca | 30 | depends on NF_CONNTRACK_PROCFS && NF_CONNTRACK_IPV4 |
a999e683 PM |
31 | default y |
32 | help | |
33 | This option enables /proc and sysctl compatibility with the old | |
67c0d579 | 34 | layer 3 dependent connection tracking. This is needed to keep |
a999e683 PM |
35 | old programs that have not been adapted to the new names working. |
36 | ||
37 | If unsure, say Y. | |
38 | ||
f04e599e | 39 | if NF_TABLES |
c1878869 | 40 | |
96518518 | 41 | config NF_TABLES_IPV4 |
96518518 | 42 | tristate "IPv4 nf_tables support" |
d497c635 PNA |
43 | help |
44 | This option enables the IPv4 support for nf_tables. | |
96518518 | 45 | |
f04e599e PNA |
46 | if NF_TABLES_IPV4 |
47 | ||
9370761c | 48 | config NFT_CHAIN_ROUTE_IPV4 |
9370761c | 49 | tristate "IPv4 nf_tables route chain support" |
d497c635 PNA |
50 | help |
51 | This option enables the "route" chain for IPv4 in nf_tables. This | |
52 | chain type is used to force packet re-routing after mangling header | |
53 | fields such as the source, destination, type of service and | |
54 | the packet mark. | |
96518518 | 55 | |
cc4723ca | 56 | config NFT_REJECT_IPV4 |
c8d7b98b | 57 | select NF_REJECT_IPV4 |
cc4723ca PM |
58 | default NFT_REJECT |
59 | tristate | |
60 | ||
f04e599e PNA |
61 | endif # NF_TABLES_IPV4 |
62 | ||
ed683f13 | 63 | config NF_TABLES_ARP |
ed683f13 | 64 | tristate "ARP nf_tables support" |
d497c635 PNA |
65 | help |
66 | This option enables the ARP support for nf_tables. | |
ed683f13 | 67 | |
f04e599e PNA |
68 | endif # NF_TABLES |
69 | ||
bbde9fc1 PNA |
70 | config NF_DUP_IPV4 |
71 | tristate "Netfilter IPv4 packet duplication to alternate destination" | |
72 | help | |
73 | This option enables the nf_dup_ipv4 core, which duplicates an IPv4 | |
74 | packet to be rerouted to another destination. | |
75 | ||
f04e599e PNA |
76 | config NF_LOG_ARP |
77 | tristate "ARP packet logging" | |
78 | default m if NETFILTER_ADVANCED=n | |
79 | select NF_LOG_COMMON | |
80 | ||
81 | config NF_LOG_IPV4 | |
82 | tristate "IPv4 packet logging" | |
83 | default m if NETFILTER_ADVANCED=n | |
84 | select NF_LOG_COMMON | |
85 | ||
86 | config NF_REJECT_IPV4 | |
87 | tristate "IPv4 packet rejection" | |
88 | default m if NETFILTER_ADVANCED=n | |
89 | ||
8993cf8e PNA |
90 | config NF_NAT_IPV4 |
91 | tristate "IPv4 NAT" | |
92 | depends on NF_CONNTRACK_IPV4 | |
93 | default m if NETFILTER_ADVANCED=n | |
94 | select NF_NAT | |
95 | help | |
96 | The IPv4 NAT option allows masquerading, port forwarding and other | |
97 | forms of full Network Address Port Translation. This can be | |
98 | controlled by iptables or nft. | |
99 | ||
100 | if NF_NAT_IPV4 | |
101 | ||
3e8dc212 PNA |
102 | config NFT_CHAIN_NAT_IPV4 |
103 | depends on NF_TABLES_IPV4 | |
104 | tristate "IPv4 nf_tables nat chain support" | |
105 | help | |
106 | This option enables the "nat" chain for IPv4 in nf_tables. This | |
107 | chain type is used to perform Network Address Translation (NAT) | |
108 | packet transformations such as the source, destination address and | |
109 | source and destination ports. | |
110 | ||
0bbe80e5 PNA |
111 | config NF_NAT_MASQUERADE_IPV4 |
112 | tristate "IPv4 masquerade support" | |
113 | help | |
114 | This is the kernel functionality to provide NAT in the masquerade | |
115 | flavour (automatic source address selection). | |
116 | ||
117 | config NFT_MASQ_IPV4 | |
118 | tristate "IPv4 masquerading support for nf_tables" | |
119 | depends on NF_TABLES_IPV4 | |
120 | depends on NFT_MASQ | |
121 | select NF_NAT_MASQUERADE_IPV4 | |
122 | help | |
123 | This is the expression that provides IPv4 masquerading support for | |
124 | nf_tables. | |
125 | ||
e9105f1b AB |
126 | config NFT_REDIR_IPV4 |
127 | tristate "IPv4 redirect support for nf_tables" | |
128 | depends on NF_TABLES_IPV4 | |
129 | depends on NFT_REDIR | |
b59eaf9e | 130 | select NF_NAT_REDIRECT |
e9105f1b AB |
131 | help |
132 | This is the expression that provides IPv4 redirect support for | |
133 | nf_tables. | |
134 | ||
8993cf8e PNA |
135 | config NF_NAT_SNMP_BASIC |
136 | tristate "Basic SNMP-ALG support" | |
137 | depends on NF_CONNTRACK_SNMP | |
138 | depends on NETFILTER_ADVANCED | |
139 | default NF_NAT && NF_CONNTRACK_SNMP | |
140 | ---help--- | |
141 | ||
142 | This module implements an Application Layer Gateway (ALG) for | |
143 | SNMP payloads. In conjunction with NAT, it allows a network | |
144 | management system to access multiple private networks with | |
145 | conflicting addresses. It works by modifying IP addresses | |
146 | inside SNMP payloads to match IP-layer NAT mapping. | |
147 | ||
148 | This is the "basic" form of SNMP-ALG, as described in RFC 2962 | |
149 | ||
150 | To compile it as a module, choose M here. If unsure, say N. | |
151 | ||
152 | config NF_NAT_PROTO_GRE | |
153 | tristate | |
154 | depends on NF_CT_PROTO_GRE | |
155 | ||
156 | config NF_NAT_PPTP | |
157 | tristate | |
158 | depends on NF_CONNTRACK | |
159 | default NF_CONNTRACK_PPTP | |
160 | select NF_NAT_PROTO_GRE | |
161 | ||
162 | config NF_NAT_H323 | |
163 | tristate | |
164 | depends on NF_CONNTRACK | |
165 | default NF_CONNTRACK_H323 | |
166 | ||
167 | endif # NF_NAT_IPV4 | |
168 | ||
1da177e4 LT |
169 | config IP_NF_IPTABLES |
170 | tristate "IP tables support (required for filtering/masq/NAT)" | |
33b8e776 | 171 | default m if NETFILTER_ADVANCED=n |
a3c941b0 | 172 | select NETFILTER_XTABLES |
1da177e4 LT |
173 | help |
174 | iptables is a general, extensible packet identification framework. | |
175 | The packet filtering and full NAT (masquerading, port forwarding, | |
176 | etc) subsystems now use this: say `Y' or `M' here if you want to use | |
177 | either of those. | |
178 | ||
179 | To compile it as a module, choose M here. If unsure, say N. | |
180 | ||
c2df73de JE |
181 | if IP_NF_IPTABLES |
182 | ||
1da177e4 | 183 | # The matches. |
dc5ab2fa | 184 | config IP_NF_MATCH_AH |
4c37799c | 185 | tristate '"ah" match support' |
33b8e776 | 186 | depends on NETFILTER_ADVANCED |
1da177e4 | 187 | help |
dc5ab2fa YK |
188 | This match extension allows you to match a range of SPIs |
189 | inside AH header of IPSec packets. | |
1da177e4 LT |
190 | |
191 | To compile it as a module, choose M here. If unsure, say N. | |
192 | ||
aba0d348 JE |
193 | config IP_NF_MATCH_ECN |
194 | tristate '"ecn" match support' | |
33b8e776 | 195 | depends on NETFILTER_ADVANCED |
d446a820 JE |
196 | select NETFILTER_XT_MATCH_ECN |
197 | ---help--- | |
198 | This is a backwards-compat option for the user's convenience | |
199 | (e.g. when running oldconfig). It selects | |
200 | CONFIG_NETFILTER_XT_MATCH_ECN. | |
1da177e4 | 201 | |
8f97339d FW |
202 | config IP_NF_MATCH_RPFILTER |
203 | tristate '"rpfilter" reverse path filter match support' | |
f09becc7 PNA |
204 | depends on NETFILTER_ADVANCED |
205 | depends on IP_NF_MANGLE || IP_NF_RAW | |
8f97339d FW |
206 | ---help--- |
207 | This option allows you to match packets whose replies would | |
208 | go out via the interface the packet came in. | |
209 | ||
210 | To compile it as a module, choose M here. If unsure, say N. | |
211 | The module will be called ipt_rpfilter. | |
212 | ||
4323362e JE |
213 | config IP_NF_MATCH_TTL |
214 | tristate '"ttl" match support' | |
215 | depends on NETFILTER_ADVANCED | |
216 | select NETFILTER_XT_MATCH_HL | |
217 | ---help--- | |
218 | This is a backwards-compat option for the user's convenience | |
219 | (e.g. when running oldconfig). It selects | |
67c0d579 | 220 | CONFIG_NETFILTER_XT_MATCH_HL. |
4323362e | 221 | |
1da177e4 LT |
222 | # `filter', generic and specific targets |
223 | config IP_NF_FILTER | |
224 | tristate "Packet filtering" | |
33b8e776 | 225 | default m if NETFILTER_ADVANCED=n |
1da177e4 LT |
226 | help |
227 | Packet filtering defines a table `filter', which has a series of | |
228 | rules for simple packet filtering at local input, forwarding and | |
229 | local output. See the man page for iptables(8). | |
230 | ||
231 | To compile it as a module, choose M here. If unsure, say N. | |
232 | ||
233 | config IP_NF_TARGET_REJECT | |
234 | tristate "REJECT target support" | |
235 | depends on IP_NF_FILTER | |
c8d7b98b | 236 | select NF_REJECT_IPV4 |
33b8e776 | 237 | default m if NETFILTER_ADVANCED=n |
1da177e4 LT |
238 | help |
239 | The REJECT target allows a filtering rule to specify that an ICMP | |
240 | error should be issued in response to an incoming packet, rather | |
241 | than silently being dropped. | |
242 | ||
243 | To compile it as a module, choose M here. If unsure, say N. | |
244 | ||
48b1de4c PM |
245 | config IP_NF_TARGET_SYNPROXY |
246 | tristate "SYNPROXY target support" | |
247 | depends on NF_CONNTRACK && NETFILTER_ADVANCED | |
248 | select NETFILTER_SYNPROXY | |
249 | select SYN_COOKIES | |
250 | help | |
251 | The SYNPROXY target allows you to intercept TCP connections and | |
252 | establish them using syncookies before they are passed on to the | |
253 | server. This allows to avoid conntrack and server resource usage | |
254 | during SYN-flood attacks. | |
255 | ||
256 | To compile it as a module, choose M here. If unsure, say N. | |
257 | ||
5b1158e9 | 258 | # NAT + specific targets: nf_conntrack |
8993cf8e PNA |
259 | config IP_NF_NAT |
260 | tristate "iptables NAT support" | |
c2df73de | 261 | depends on NF_CONNTRACK_IPV4 |
33b8e776 | 262 | default m if NETFILTER_ADVANCED=n |
c7232c99 | 263 | select NF_NAT |
8993cf8e PNA |
264 | select NF_NAT_IPV4 |
265 | select NETFILTER_XT_NAT | |
5b1158e9 | 266 | help |
8993cf8e PNA |
267 | This enables the `nat' table in iptables. This allows masquerading, |
268 | port forwarding and other forms of full Network Address Port | |
269 | Translation. | |
5b1158e9 JK |
270 | |
271 | To compile it as a module, choose M here. If unsure, say N. | |
272 | ||
8993cf8e | 273 | if IP_NF_NAT |
1da177e4 LT |
274 | |
275 | config IP_NF_TARGET_MASQUERADE | |
276 | tristate "MASQUERADE target support" | |
8dd33cc9 | 277 | select NF_NAT_MASQUERADE_IPV4 |
33b8e776 | 278 | default m if NETFILTER_ADVANCED=n |
1da177e4 LT |
279 | help |
280 | Masquerading is a special case of NAT: all outgoing connections are | |
281 | changed to seem to come from a particular interface's address, and | |
282 | if the interface goes down, those connections are lost. This is | |
283 | only useful for dialup accounts with dynamic IP address (ie. your IP | |
284 | address will be different on next dialup). | |
285 | ||
286 | To compile it as a module, choose M here. If unsure, say N. | |
287 | ||
aba0d348 JE |
288 | config IP_NF_TARGET_NETMAP |
289 | tristate "NETMAP target support" | |
33b8e776 | 290 | depends on NETFILTER_ADVANCED |
b3d54b3e JE |
291 | select NETFILTER_XT_TARGET_NETMAP |
292 | ---help--- | |
293 | This is a backwards-compat option for the user's convenience | |
294 | (e.g. when running oldconfig). It selects | |
295 | CONFIG_NETFILTER_XT_TARGET_NETMAP. | |
1da177e4 | 296 | |
aba0d348 JE |
297 | config IP_NF_TARGET_REDIRECT |
298 | tristate "REDIRECT target support" | |
33b8e776 | 299 | depends on NETFILTER_ADVANCED |
2cbc78a2 JE |
300 | select NETFILTER_XT_TARGET_REDIRECT |
301 | ---help--- | |
302 | This is a backwards-compat option for the user's convenience | |
303 | (e.g. when running oldconfig). It selects | |
304 | CONFIG_NETFILTER_XT_TARGET_REDIRECT. | |
1da177e4 | 305 | |
8993cf8e | 306 | endif # IP_NF_NAT |
f587de0e | 307 | |
1da177e4 LT |
308 | # mangle + specific targets |
309 | config IP_NF_MANGLE | |
310 | tristate "Packet mangling" | |
33b8e776 | 311 | default m if NETFILTER_ADVANCED=n |
1da177e4 LT |
312 | help |
313 | This option adds a `mangle' table to iptables: see the man page for | |
314 | iptables(8). This table is used for various packet alterations | |
315 | which can effect how the packet is routed. | |
316 | ||
317 | To compile it as a module, choose M here. If unsure, say N. | |
318 | ||
aba0d348 | 319 | config IP_NF_TARGET_CLUSTERIP |
aec9a0eb KC |
320 | tristate "CLUSTERIP target support" |
321 | depends on IP_NF_MANGLE | |
aba0d348 JE |
322 | depends on NF_CONNTRACK_IPV4 |
323 | depends on NETFILTER_ADVANCED | |
324 | select NF_CONNTRACK_MARK | |
325 | help | |
326 | The CLUSTERIP target allows you to build load-balancing clusters of | |
327 | network servers without having a dedicated load-balancing | |
328 | router/server/switch. | |
329 | ||
330 | To compile it as a module, choose M here. If unsure, say N. | |
331 | ||
1da177e4 LT |
332 | config IP_NF_TARGET_ECN |
333 | tristate "ECN target support" | |
334 | depends on IP_NF_MANGLE | |
33b8e776 | 335 | depends on NETFILTER_ADVANCED |
1da177e4 LT |
336 | ---help--- |
337 | This option adds a `ECN' target, which can be used in the iptables mangle | |
338 | table. | |
339 | ||
340 | You can use this target to remove the ECN bits from the IPv4 header of | |
341 | an IP packet. This is particularly useful, if you need to work around | |
342 | existing ECN blackholes on the internet, but don't want to disable | |
343 | ECN support in general. | |
344 | ||
345 | To compile it as a module, choose M here. If unsure, say N. | |
346 | ||
4323362e JE |
347 | config IP_NF_TARGET_TTL |
348 | tristate '"TTL" target support' | |
76b6717b | 349 | depends on NETFILTER_ADVANCED && IP_NF_MANGLE |
4323362e JE |
350 | select NETFILTER_XT_TARGET_HL |
351 | ---help--- | |
76b6717b | 352 | This is a backwards-compatible option for the user's convenience |
4323362e | 353 | (e.g. when running oldconfig). It selects |
67c0d579 | 354 | CONFIG_NETFILTER_XT_TARGET_HL. |
4323362e | 355 | |
1da177e4 LT |
356 | # raw + specific targets |
357 | config IP_NF_RAW | |
358 | tristate 'raw table support (required for NOTRACK/TRACE)' | |
1da177e4 LT |
359 | help |
360 | This option adds a `raw' table to iptables. This table is the very | |
361 | first in the netfilter framework and hooks in at the PREROUTING | |
362 | and OUTPUT chains. | |
363 | ||
364 | If you want to compile it as a module, say M here and read | |
e403149c | 365 | <file:Documentation/kbuild/modules.txt>. If unsure, say `N'. |
560ee653 JM |
366 | |
367 | # security table for MAC policy | |
368 | config IP_NF_SECURITY | |
369 | tristate "Security table" | |
560ee653 | 370 | depends on SECURITY |
70eed75d | 371 | depends on NETFILTER_ADVANCED |
560ee653 JM |
372 | help |
373 | This option adds a `security' table to iptables, for use | |
374 | with Mandatory Access Control (MAC) policy. | |
375 | ||
376 | If unsure, say N. | |
1da177e4 | 377 | |
c2df73de JE |
378 | endif # IP_NF_IPTABLES |
379 | ||
1da177e4 LT |
380 | # ARP tables |
381 | config IP_NF_ARPTABLES | |
382 | tristate "ARP tables support" | |
a3c941b0 | 383 | select NETFILTER_XTABLES |
33b8e776 | 384 | depends on NETFILTER_ADVANCED |
1da177e4 LT |
385 | help |
386 | arptables is a general, extensible packet identification framework. | |
387 | The ARP packet filtering and mangling (manipulation)subsystems | |
388 | use this: say Y or M here if you want to use either of those. | |
389 | ||
390 | To compile it as a module, choose M here. If unsure, say N. | |
391 | ||
c2df73de JE |
392 | if IP_NF_ARPTABLES |
393 | ||
1da177e4 LT |
394 | config IP_NF_ARPFILTER |
395 | tristate "ARP packet filtering" | |
1da177e4 LT |
396 | help |
397 | ARP packet filtering defines a table `filter', which has a series of | |
398 | rules for simple ARP packet filtering at local input and | |
399 | local output. On a bridge, you can also specify filtering rules | |
400 | for forwarded ARP packets. See the man page for arptables(8). | |
401 | ||
402 | To compile it as a module, choose M here. If unsure, say N. | |
403 | ||
404 | config IP_NF_ARP_MANGLE | |
405 | tristate "ARP payload mangling" | |
1da177e4 LT |
406 | help |
407 | Allows altering the ARP packet payload: source and destination | |
408 | hardware and network addresses. | |
409 | ||
c2df73de JE |
410 | endif # IP_NF_ARPTABLES |
411 | ||
1da177e4 LT |
412 | endmenu |
413 |