Linux kernel mirror (for testing)
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linux
1# SPDX-License-Identifier: GPL-2.0-only
2#
3# IP netfilter configuration
4#
5
6menu "IPv6: Netfilter Configuration"
7 depends on INET && IPV6 && NETFILTER
8
9# old sockopt interface and eval loop
10config IP6_NF_IPTABLES_LEGACY
11 tristate "Legacy IP6 tables support"
12 depends on INET && IPV6 && NETFILTER_XTABLES_LEGACY
13 depends on NETFILTER_XTABLES
14 default m if NETFILTER_XTABLES_LEGACY
15 help
16 ip6tables is a legacy packet classifier.
17 This is not needed if you are using iptables over nftables
18 (iptables-nft).
19
20config NF_SOCKET_IPV6
21 tristate "IPv6 socket lookup support"
22 help
23 This option enables the IPv6 socket lookup infrastructure. This
24 is used by the {ip6,nf}tables socket match.
25
26config NF_TPROXY_IPV6
27 tristate "IPv6 tproxy support"
28
29if NF_TABLES
30
31config NF_TABLES_IPV6
32 bool "IPv6 nf_tables support"
33 help
34 This option enables the IPv6 support for nf_tables.
35
36if NF_TABLES_IPV6
37
38config NFT_REJECT_IPV6
39 select NF_REJECT_IPV6
40 default NFT_REJECT
41 tristate
42
43config NFT_DUP_IPV6
44 tristate "IPv6 nf_tables packet duplication support"
45 depends on !NF_CONNTRACK || NF_CONNTRACK
46 select NF_DUP_IPV6
47 help
48 This module enables IPv6 packet duplication support for nf_tables.
49
50config NFT_FIB_IPV6
51 tristate "nf_tables fib / ipv6 route lookup support"
52 select NFT_FIB
53 help
54 This module enables IPv6 FIB lookups, e.g. for reverse path filtering.
55 It also allows query of the FIB for the route type, e.g. local, unicast,
56 multicast or blackhole.
57
58endif # NF_TABLES_IPV6
59endif # NF_TABLES
60
61config NF_DUP_IPV6
62 tristate "Netfilter IPv6 packet duplication to alternate destination"
63 depends on !NF_CONNTRACK || NF_CONNTRACK
64 help
65 This option enables the nf_dup_ipv6 core, which duplicates an IPv6
66 packet to be rerouted to another destination.
67
68config NF_REJECT_IPV6
69 tristate "IPv6 packet rejection"
70 default m if NETFILTER_ADVANCED=n
71
72config NF_LOG_IPV6
73 tristate "IPv6 packet logging"
74 default m if NETFILTER_ADVANCED=n
75 select NF_LOG_SYSLOG
76 help
77 This is a backwards-compat option for the user's convenience
78 (e.g. when running oldconfig). It selects CONFIG_NF_LOG_SYSLOG.
79
80config IP6_NF_IPTABLES
81 tristate "IP6 tables support (required for filtering)"
82 depends on INET && IPV6
83 select NETFILTER_XTABLES
84 default m if NETFILTER_ADVANCED=n
85 help
86 ip6tables is a general, extensible packet identification framework.
87 Currently only the packet filtering and packet mangling subsystem
88 for IPv6 use this, but connection tracking is going to follow.
89 Say 'Y' or 'M' here if you want to use either of those.
90
91 To compile it as a module, choose M here. If unsure, say N.
92
93if IP6_NF_IPTABLES
94
95# The simple matches.
96config IP6_NF_MATCH_AH
97 tristate '"ah" match support'
98 depends on NETFILTER_ADVANCED
99 help
100 This module allows one to match AH packets.
101
102 To compile it as a module, choose M here. If unsure, say N.
103
104config IP6_NF_MATCH_EUI64
105 tristate '"eui64" address check'
106 depends on NETFILTER_ADVANCED
107 help
108 This module performs checking on the IPv6 source address
109 Compares the last 64 bits with the EUI64 (delivered
110 from the MAC address) address
111
112 To compile it as a module, choose M here. If unsure, say N.
113
114config IP6_NF_MATCH_FRAG
115 tristate '"frag" Fragmentation header match support'
116 depends on NETFILTER_ADVANCED
117 help
118 frag matching allows you to match packets based on the fragmentation
119 header of the packet.
120
121 To compile it as a module, choose M here. If unsure, say N.
122
123config IP6_NF_MATCH_OPTS
124 tristate '"hbh" hop-by-hop and "dst" opts header match support'
125 depends on NETFILTER_ADVANCED
126 help
127 This allows one to match packets based on the hop-by-hop
128 and destination options headers of a packet.
129
130 To compile it as a module, choose M here. If unsure, say N.
131
132config IP6_NF_MATCH_HL
133 tristate '"hl" hoplimit match support'
134 depends on NETFILTER_ADVANCED
135 select NETFILTER_XT_MATCH_HL
136 help
137 This is a backwards-compat option for the user's convenience
138 (e.g. when running oldconfig). It selects
139 CONFIG_NETFILTER_XT_MATCH_HL.
140
141config IP6_NF_MATCH_IPV6HEADER
142 tristate '"ipv6header" IPv6 Extension Headers Match'
143 default m if NETFILTER_ADVANCED=n
144 help
145 This module allows one to match packets based upon
146 the ipv6 extension headers.
147
148 To compile it as a module, choose M here. If unsure, say N.
149
150config IP6_NF_MATCH_MH
151 tristate '"mh" match support'
152 depends on NETFILTER_ADVANCED
153 help
154 This module allows one to match MH packets.
155
156 To compile it as a module, choose M here. If unsure, say N.
157
158config IP6_NF_MATCH_RPFILTER
159 tristate '"rpfilter" reverse path filter match support'
160 depends on NETFILTER_ADVANCED
161 depends on IP6_NF_MANGLE || IP6_NF_RAW || NFT_COMPAT
162 help
163 This option allows you to match packets whose replies would
164 go out via the interface the packet came in.
165
166 To compile it as a module, choose M here. If unsure, say N.
167 The module will be called ip6t_rpfilter.
168
169config IP6_NF_MATCH_RT
170 tristate '"rt" Routing header match support'
171 depends on NETFILTER_ADVANCED
172 help
173 rt matching allows you to match packets based on the routing
174 header of the packet.
175
176 To compile it as a module, choose M here. If unsure, say N.
177
178config IP6_NF_MATCH_SRH
179 tristate '"srh" Segment Routing header match support'
180 depends on NETFILTER_ADVANCED
181 help
182 srh matching allows you to match packets based on the segment
183 routing header of the packet.
184
185 To compile it as a module, choose M here. If unsure, say N.
186
187# The targets
188config IP6_NF_TARGET_HL
189 tristate '"HL" hoplimit target support'
190 depends on NETFILTER_ADVANCED && IP6_NF_MANGLE
191 select NETFILTER_XT_TARGET_HL
192 help
193 This is a backwards-compatible option for the user's convenience
194 (e.g. when running oldconfig). It selects
195 CONFIG_NETFILTER_XT_TARGET_HL.
196
197config IP6_NF_FILTER
198 tristate "Packet filtering"
199 default m if NETFILTER_ADVANCED=n || IP6_NF_IPTABLES_LEGACY
200 depends on IP6_NF_IPTABLES_LEGACY
201 tristate
202 help
203 Packet filtering defines a table `filter', which has a series of
204 rules for simple packet filtering at local input, forwarding and
205 local output. See the man page for iptables(8).
206
207 To compile it as a module, choose M here. If unsure, say N.
208
209config IP6_NF_TARGET_REJECT
210 tristate "REJECT target support"
211 depends on IP6_NF_FILTER || NFT_COMPAT
212 select NF_REJECT_IPV6
213 default m if NETFILTER_ADVANCED=n
214 help
215 The REJECT target allows a filtering rule to specify that an ICMPv6
216 error should be issued in response to an incoming packet, rather
217 than silently being dropped.
218
219 To compile it as a module, choose M here. If unsure, say N.
220
221config IP6_NF_TARGET_SYNPROXY
222 tristate "SYNPROXY target support"
223 depends on NF_CONNTRACK && NETFILTER_ADVANCED
224 select NETFILTER_SYNPROXY
225 select SYN_COOKIES
226 help
227 The SYNPROXY target allows you to intercept TCP connections and
228 establish them using syncookies before they are passed on to the
229 server. This allows to avoid conntrack and server resource usage
230 during SYN-flood attacks.
231
232 To compile it as a module, choose M here. If unsure, say N.
233
234config IP6_NF_MANGLE
235 tristate "Packet mangling"
236 default m if NETFILTER_ADVANCED=n || IP6_NF_IPTABLES_LEGACY
237 depends on IP6_NF_IPTABLES_LEGACY
238 help
239 This option adds a `mangle' table to iptables: see the man page for
240 iptables(8). This table is used for various packet alterations
241 which can effect how the packet is routed.
242
243 To compile it as a module, choose M here. If unsure, say N.
244
245config IP6_NF_RAW
246 tristate 'raw table support (required for TRACE)'
247 depends on IP6_NF_IPTABLES_LEGACY
248 help
249 This option adds a `raw' table to ip6tables. This table is the very
250 first in the netfilter framework and hooks in at the PREROUTING
251 and OUTPUT chains.
252
253 If you want to compile it as a module, say M here and read
254 <file:Documentation/kbuild/modules.rst>. If unsure, say `N'.
255
256# security table for MAC policy
257config IP6_NF_SECURITY
258 tristate "Security table"
259 depends on SECURITY
260 depends on NETFILTER_ADVANCED
261 depends on IP6_NF_IPTABLES_LEGACY
262 help
263 This option adds a `security' table to iptables, for use
264 with Mandatory Access Control (MAC) policy.
265
266 If unsure, say N.
267
268config IP6_NF_NAT
269 tristate "ip6tables NAT support"
270 depends on NF_CONNTRACK
271 depends on NETFILTER_ADVANCED
272 depends on IP6_NF_IPTABLES_LEGACY
273 select NF_NAT
274 select NETFILTER_XT_NAT
275 help
276 This enables the `nat' table in ip6tables. This allows masquerading,
277 port forwarding and other forms of full Network Address Port
278 Translation.
279
280 To compile it as a module, choose M here. If unsure, say N.
281
282config IP6_NF_TARGET_MASQUERADE
283 tristate "MASQUERADE target support"
284 select NETFILTER_XT_TARGET_MASQUERADE
285 depends on IP6_NF_NAT
286 help
287 This is a backwards-compat option for the user's convenience
288 (e.g. when running oldconfig). It selects NETFILTER_XT_TARGET_MASQUERADE.
289
290config IP6_NF_TARGET_NPT
291 tristate "NPT (Network Prefix translation) target support"
292 depends on IP6_NF_NAT || NFT_COMPAT
293 help
294 This option adds the `SNPT' and `DNPT' target, which perform
295 stateless IPv6-to-IPv6 Network Prefix Translation per RFC 6296.
296
297 To compile it as a module, choose M here. If unsure, say N.
298
299endif # IP6_NF_IPTABLES
300endmenu
301
302config NF_DEFRAG_IPV6
303 tristate