1menu "Core Netfilter Configuration"
   2	depends on NET && INET && NETFILTER
   3
   4config NETFILTER_INGRESS
   5	bool "Netfilter ingress support"
   6	default y
   7	select NET_INGRESS
   8	help
   9	  This allows you to classify packets from ingress using the Netfilter
  10	  infrastructure.
  11
 
 
 
 
 
 
 
 
 
 
 
  12config NETFILTER_NETLINK
  13	tristate
  14
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  15config NETFILTER_NETLINK_ACCT
  16tristate "Netfilter NFACCT over NFNETLINK interface"
  17	depends on NETFILTER_ADVANCED
  18	select NETFILTER_NETLINK
  19	help
  20	  If this option is enabled, the kernel will include support
  21	  for extended accounting via NFNETLINK.
  22
  23config NETFILTER_NETLINK_QUEUE
  24	tristate "Netfilter NFQUEUE over NFNETLINK interface"
  25	depends on NETFILTER_ADVANCED
  26	select NETFILTER_NETLINK
  27	help
  28	  If this option is enabled, the kernel will include support
  29	  for queueing packets via NFNETLINK.
  30	  
  31config NETFILTER_NETLINK_LOG
  32	tristate "Netfilter LOG over NFNETLINK interface"
  33	default m if NETFILTER_ADVANCED=n
  34	select NETFILTER_NETLINK
  35	help
  36	  If this option is enabled, the kernel will include support
  37	  for logging packets via NFNETLINK.
  38
  39	  This obsoletes the existing ipt_ULOG and ebg_ulog mechanisms,
  40	  and is also scheduled to replace the old syslog-based ipt_LOG
  41	  and ip6t_LOG modules.
  42
 
 
 
 
 
 
 
 
  43config NF_CONNTRACK
  44	tristate "Netfilter connection tracking support"
  45	default m if NETFILTER_ADVANCED=n
 
 
  46	help
  47	  Connection tracking keeps a record of what packets have passed
  48	  through your machine, in order to figure out how they are related
  49	  into connections.
  50
  51	  This is required to do Masquerading or other kinds of Network
  52	  Address Translation.  It can also be used to enhance packet
  53	  filtering (see `Connection state match support' below).
  54
  55	  To compile it as a module, choose M here.  If unsure, say N.
  56
  57config NF_LOG_COMMON
  58	tristate
  59
  60config NF_LOG_NETDEV
  61	tristate "Netdev packet logging"
  62	select NF_LOG_COMMON
 
 
 
 
 
  63
  64if NF_CONNTRACK
 
 
  65
  66config NF_CONNTRACK_MARK
  67	bool  'Connection mark tracking support'
  68	depends on NETFILTER_ADVANCED
  69	help
  70	  This option enables support for connection marks, used by the
  71	  `CONNMARK' target and `connmark' match. Similar to the mark value
  72	  of packets, but this mark value is kept in the conntrack session
  73	  instead of the individual packets.
  74
  75config NF_CONNTRACK_SECMARK
  76	bool  'Connection tracking security mark support'
  77	depends on NETWORK_SECMARK
  78	default m if NETFILTER_ADVANCED=n
  79	help
  80	  This option enables security markings to be applied to
  81	  connections.  Typically they are copied to connections from
  82	  packets using the CONNSECMARK target and copied back from
  83	  connections to packets with the same target, with the packets
  84	  being originally labeled via SECMARK.
  85
  86	  If unsure, say 'N'.
  87
  88config NF_CONNTRACK_ZONES
  89	bool  'Connection tracking zones'
  90	depends on NETFILTER_ADVANCED
  91	depends on NETFILTER_XT_TARGET_CT
  92	help
  93	  This option enables support for connection tracking zones.
  94	  Normally, each connection needs to have a unique system wide
  95	  identity. Connection tracking zones allow to have multiple
  96	  connections using the same identity, as long as they are
  97	  contained in different zones.
  98
  99	  If unsure, say `N'.
 100
 101config NF_CONNTRACK_PROCFS
 102	bool "Supply CT list in procfs (OBSOLETE)"
 103	default y
 104	depends on PROC_FS
 105	---help---
 106	This option enables for the list of known conntrack entries
 107	to be shown in procfs under net/netfilter/nf_conntrack. This
 108	is considered obsolete in favor of using the conntrack(8)
 109	tool which uses Netlink.
 110
 111config NF_CONNTRACK_EVENTS
 112	bool "Connection tracking events"
 113	depends on NETFILTER_ADVANCED
 114	help
 115	  If this option is enabled, the connection tracking code will
 116	  provide a notifier chain that can be used by other kernel code
 117	  to get notified about changes in the connection tracking state.
 118
 119	  If unsure, say `N'.
 120
 121config NF_CONNTRACK_TIMEOUT
 122	bool  'Connection tracking timeout'
 123	depends on NETFILTER_ADVANCED
 124	help
 125	  This option enables support for connection tracking timeout
 126	  extension. This allows you to attach timeout policies to flow
 127	  via the CT target.
 128
 129	  If unsure, say `N'.
 130
 131config NF_CONNTRACK_TIMESTAMP
 132	bool  'Connection tracking timestamping'
 133	depends on NETFILTER_ADVANCED
 134	help
 135	  This option enables support for connection tracking timestamping.
 136	  This allows you to store the flow start-time and to obtain
 137	  the flow-stop time (once it has been destroyed) via Connection
 138	  tracking events.
 139
 140	  If unsure, say `N'.
 141
 142config NF_CONNTRACK_LABELS
 143	bool
 144	help
 145	  This option enables support for assigning user-defined flag bits
 146	  to connection tracking entries.  It selected by the connlabel match.
 
 147
 148config NF_CT_PROTO_DCCP
 149	bool 'DCCP protocol connection tracking support'
 150	depends on NETFILTER_ADVANCED
 151	default y
 152	help
 153	  With this option enabled, the layer 3 independent connection
 154	  tracking code will be able to do state tracking on DCCP connections.
 155
 156	  If unsure, say Y.
 157
 158config NF_CT_PROTO_GRE
 159	tristate
 160
 161config NF_CT_PROTO_SCTP
 162	bool 'SCTP protocol connection tracking support'
 163	depends on NETFILTER_ADVANCED
 164	default y
 
 165	help
 166	  With this option enabled, the layer 3 independent connection
 167	  tracking code will be able to do state tracking on SCTP connections.
 168
 169	  If unsure, say Y.
 170
 171config NF_CT_PROTO_UDPLITE
 172	bool 'UDP-Lite protocol connection tracking support'
 173	depends on NETFILTER_ADVANCED
 174	default y
 175	help
 176	  With this option enabled, the layer 3 independent connection
 177	  tracking code will be able to do state tracking on UDP-Lite
 178	  connections.
 179
 180	  If unsure, say Y.
 181
 182config NF_CONNTRACK_AMANDA
 183	tristate "Amanda backup protocol support"
 184	depends on NETFILTER_ADVANCED
 185	select TEXTSEARCH
 186	select TEXTSEARCH_KMP
 187	help
 188	  If you are running the Amanda backup package <http://www.amanda.org/>
 189	  on this machine or machines that will be MASQUERADED through this
 190	  machine, then you may want to enable this feature.  This allows the
 191	  connection tracking and natting code to allow the sub-channels that
 192	  Amanda requires for communication of the backup data, messages and
 193	  index.
 194
 195	  To compile it as a module, choose M here.  If unsure, say N.
 196
 197config NF_CONNTRACK_FTP
 198	tristate "FTP protocol support"
 199	default m if NETFILTER_ADVANCED=n
 200	help
 201	  Tracking FTP connections is problematic: special helpers are
 202	  required for tracking them, and doing masquerading and other forms
 203	  of Network Address Translation on them.
 204
 205	  This is FTP support on Layer 3 independent connection tracking.
 206	  Layer 3 independent connection tracking is experimental scheme
 207	  which generalize ip_conntrack to support other layer 3 protocols.
 208
 209	  To compile it as a module, choose M here.  If unsure, say N.
 210
 211config NF_CONNTRACK_H323
 212	tristate "H.323 protocol support"
 213	depends on IPV6 || IPV6=n
 214	depends on NETFILTER_ADVANCED
 215	help
 216	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
 217	  important VoIP protocols, it is widely used by voice hardware and
 218	  software including voice gateways, IP phones, Netmeeting, OpenPhone,
 219	  Gnomemeeting, etc.
 220
 221	  With this module you can support H.323 on a connection tracking/NAT
 222	  firewall.
 223
 224	  This module supports RAS, Fast Start, H.245 Tunnelling, Call
 225	  Forwarding, RTP/RTCP and T.120 based audio, video, fax, chat,
 226	  whiteboard, file transfer, etc. For more information, please
 227	  visit http://nath323.sourceforge.net/.
 228
 229	  To compile it as a module, choose M here.  If unsure, say N.
 230
 231config NF_CONNTRACK_IRC
 232	tristate "IRC protocol support"
 233	default m if NETFILTER_ADVANCED=n
 234	help
 235	  There is a commonly-used extension to IRC called
 236	  Direct Client-to-Client Protocol (DCC).  This enables users to send
 237	  files to each other, and also chat to each other without the need
 238	  of a server.  DCC Sending is used anywhere you send files over IRC,
 239	  and DCC Chat is most commonly used by Eggdrop bots.  If you are
 240	  using NAT, this extension will enable you to send files and initiate
 241	  chats.  Note that you do NOT need this extension to get files or
 242	  have others initiate chats, or everything else in IRC.
 243
 244	  To compile it as a module, choose M here.  If unsure, say N.
 245
 246config NF_CONNTRACK_BROADCAST
 247	tristate
 248
 249config NF_CONNTRACK_NETBIOS_NS
 250	tristate "NetBIOS name service protocol support"
 251	select NF_CONNTRACK_BROADCAST
 252	help
 253	  NetBIOS name service requests are sent as broadcast messages from an
 254	  unprivileged port and responded to with unicast messages to the
 255	  same port. This make them hard to firewall properly because connection
 256	  tracking doesn't deal with broadcasts. This helper tracks locally
 257	  originating NetBIOS name service requests and the corresponding
 258	  responses. It relies on correct IP address configuration, specifically
 259	  netmask and broadcast address. When properly configured, the output
 260	  of "ip address show" should look similar to this:
 261
 262	  $ ip -4 address show eth0
 263	  4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
 264	      inet 172.16.2.252/24 brd 172.16.2.255 scope global eth0
 265
 266	  To compile it as a module, choose M here.  If unsure, say N.
 267
 268config NF_CONNTRACK_SNMP
 269	tristate "SNMP service protocol support"
 270	depends on NETFILTER_ADVANCED
 271	select NF_CONNTRACK_BROADCAST
 272	help
 273	  SNMP service requests are sent as broadcast messages from an
 274	  unprivileged port and responded to with unicast messages to the
 275	  same port. This make them hard to firewall properly because connection
 276	  tracking doesn't deal with broadcasts. This helper tracks locally
 277	  originating SNMP service requests and the corresponding
 278	  responses. It relies on correct IP address configuration, specifically
 279	  netmask and broadcast address.
 280
 281	  To compile it as a module, choose M here.  If unsure, say N.
 282
 283config NF_CONNTRACK_PPTP
 284	tristate "PPtP protocol support"
 285	depends on NETFILTER_ADVANCED
 286	select NF_CT_PROTO_GRE
 287	help
 288	  This module adds support for PPTP (Point to Point Tunnelling
 289	  Protocol, RFC2637) connection tracking and NAT.
 290
 291	  If you are running PPTP sessions over a stateful firewall or NAT
 292	  box, you may want to enable this feature.
 293
 294	  Please note that not all PPTP modes of operation are supported yet.
 295	  Specifically these limitations exist:
 296	    - Blindly assumes that control connections are always established
 297	      in PNS->PAC direction. This is a violation of RFC2637.
 298	    - Only supports a single call within each session
 299
 300	  To compile it as a module, choose M here.  If unsure, say N.
 301
 302config NF_CONNTRACK_SANE
 303	tristate "SANE protocol support"
 304	depends on NETFILTER_ADVANCED
 305	help
 306	  SANE is a protocol for remote access to scanners as implemented
 307	  by the 'saned' daemon. Like FTP, it uses separate control and
 308	  data connections.
 309
 310	  With this module you can support SANE on a connection tracking
 311	  firewall.
 312
 313	  To compile it as a module, choose M here.  If unsure, say N.
 314
 315config NF_CONNTRACK_SIP
 316	tristate "SIP protocol support"
 317	default m if NETFILTER_ADVANCED=n
 318	help
 319	  SIP is an application-layer control protocol that can establish,
 320	  modify, and terminate multimedia sessions (conferences) such as
 321	  Internet telephony calls. With the ip_conntrack_sip and
 322	  the nf_nat_sip modules you can support the protocol on a connection
 323	  tracking/NATing firewall.
 324
 325	  To compile it as a module, choose M here.  If unsure, say N.
 326
 327config NF_CONNTRACK_TFTP
 328	tristate "TFTP protocol support"
 329	depends on NETFILTER_ADVANCED
 330	help
 331	  TFTP connection tracking helper, this is required depending
 332	  on how restrictive your ruleset is.
 333	  If you are using a tftp client behind -j SNAT or -j MASQUERADING
 334	  you will need this.
 335
 336	  To compile it as a module, choose M here.  If unsure, say N.
 337
 338config NF_CT_NETLINK
 339	tristate 'Connection tracking netlink interface'
 340	select NETFILTER_NETLINK
 341	default m if NETFILTER_ADVANCED=n
 342	help
 343	  This option enables support for a netlink-based userspace interface
 344
 345config NF_CT_NETLINK_TIMEOUT
 346	tristate  'Connection tracking timeout tuning via Netlink'
 347	select NETFILTER_NETLINK
 348	depends on NETFILTER_ADVANCED
 
 349	help
 350	  This option enables support for connection tracking timeout
 351	  fine-grain tuning. This allows you to attach specific timeout
 352	  policies to flows, instead of using the global timeout policy.
 353
 354	  If unsure, say `N'.
 355
 356config NF_CT_NETLINK_HELPER
 357	tristate 'Connection tracking helpers in user-space via Netlink'
 358	select NETFILTER_NETLINK
 359	depends on NF_CT_NETLINK
 360	depends on NETFILTER_NETLINK_QUEUE
 361	depends on NETFILTER_NETLINK_GLUE_CT
 362	depends on NETFILTER_ADVANCED
 363	help
 364	  This option enables the user-space connection tracking helpers
 365	  infrastructure.
 366
 367	  If unsure, say `N'.
 368
 369config NETFILTER_NETLINK_GLUE_CT
 370	bool "NFQUEUE and NFLOG integration with Connection Tracking"
 371	default n
 372	depends on (NETFILTER_NETLINK_QUEUE || NETFILTER_NETLINK_LOG) && NF_CT_NETLINK
 373	help
 374	  If this option is enabled, NFQUEUE and NFLOG can include
 375	  Connection Tracking information together with the packet is
 376	  the enqueued via NFNETLINK.
 377
 378config NF_NAT
 379	tristate
 380
 381config NF_NAT_NEEDED
 382	bool
 383	depends on NF_NAT
 384	default y
 385
 386config NF_NAT_PROTO_DCCP
 387	bool
 388	depends on NF_NAT && NF_CT_PROTO_DCCP
 389	default NF_NAT && NF_CT_PROTO_DCCP
 390
 391config NF_NAT_PROTO_UDPLITE
 392	bool
 393	depends on NF_NAT && NF_CT_PROTO_UDPLITE
 394	default NF_NAT && NF_CT_PROTO_UDPLITE
 395
 396config NF_NAT_PROTO_SCTP
 397	bool
 398	default NF_NAT && NF_CT_PROTO_SCTP
 399	depends on NF_NAT && NF_CT_PROTO_SCTP
 400	select LIBCRC32C
 401
 402config NF_NAT_AMANDA
 403	tristate
 404	depends on NF_CONNTRACK && NF_NAT
 405	default NF_NAT && NF_CONNTRACK_AMANDA
 406
 407config NF_NAT_FTP
 408	tristate
 409	depends on NF_CONNTRACK && NF_NAT
 410	default NF_NAT && NF_CONNTRACK_FTP
 411
 412config NF_NAT_IRC
 413	tristate
 414	depends on NF_CONNTRACK && NF_NAT
 415	default NF_NAT && NF_CONNTRACK_IRC
 416
 417config NF_NAT_SIP
 418	tristate
 419	depends on NF_CONNTRACK && NF_NAT
 420	default NF_NAT && NF_CONNTRACK_SIP
 421
 422config NF_NAT_TFTP
 423	tristate
 424	depends on NF_CONNTRACK && NF_NAT
 425	default NF_NAT && NF_CONNTRACK_TFTP
 426
 427config NF_NAT_REDIRECT
 428        tristate "IPv4/IPv6 redirect support"
 429	depends on NF_NAT
 430        help
 431          This is the kernel functionality to redirect packets to local
 432          machine through NAT.
 
 
 433
 434config NETFILTER_SYNPROXY
 435	tristate
 436
 437endif # NF_CONNTRACK
 438
 439config NF_TABLES
 440	select NETFILTER_NETLINK
 
 441	tristate "Netfilter nf_tables support"
 442	help
 443	  nftables is the new packet classification framework that intends to
 444	  replace the existing {ip,ip6,arp,eb}_tables infrastructure. It
 445	  provides a pseudo-state machine with an extensible instruction-set
 446	  (also known as expressions) that the userspace 'nft' utility
 447	  (http://www.netfilter.org/projects/nftables) uses to build the
 448	  rule-set. It also comes with the generic set infrastructure that
 449	  allows you to construct mappings between matchings and actions
 450	  for performance lookups.
 451
 452	  To compile it as a module, choose M here.
 453
 454if NF_TABLES
 455
 456config NF_TABLES_INET
 457	depends on IPV6
 458	select NF_TABLES_IPV4
 459	select NF_TABLES_IPV6
 460	tristate "Netfilter nf_tables mixed IPv4/IPv6 tables support"
 461	help
 462	  This option enables support for a mixed IPv4/IPv6 "inet" table.
 463
 464config NF_TABLES_NETDEV
 465	tristate "Netfilter nf_tables netdev tables support"
 466	help
 467	  This option enables support for the "netdev" table.
 468
 469config NFT_EXTHDR
 470	tristate "Netfilter nf_tables IPv6 exthdr module"
 471	help
 472	  This option adds the "exthdr" expression that you can use to match
 473	  IPv6 extension headers.
 474
 475config NFT_META
 476	tristate "Netfilter nf_tables meta module"
 477	help
 478	  This option adds the "meta" expression that you can use to match and
 479	  to set packet metainformation such as the packet mark.
 480
 481config NFT_RT
 482	tristate "Netfilter nf_tables routing module"
 483	help
 484	  This option adds the "rt" expression that you can use to match
 485	  packet routing information such as the packet nexthop.
 486
 487config NFT_NUMGEN
 488	tristate "Netfilter nf_tables number generator module"
 489	help
 490	  This option adds the number generator expression used to perform
 491	  incremental counting and random numbers bound to a upper limit.
 492
 493config NFT_CT
 494	depends on NF_CONNTRACK
 495	tristate "Netfilter nf_tables conntrack module"
 496	help
 497	  This option adds the "ct" expression that you can use to match
 498	  connection tracking information such as the flow state.
 499
 500config NFT_SET_RBTREE
 501	tristate "Netfilter nf_tables rbtree set module"
 502	help
 503	  This option adds the "rbtree" set type (Red Black tree) that is used
 504	  to build interval-based sets.
 505
 506config NFT_SET_HASH
 507	tristate "Netfilter nf_tables hash set module"
 508	help
 509	  This option adds the "hash" set type that is used to build one-way
 510	  mappings between matchings and actions.
 511
 512config NFT_COUNTER
 513	tristate "Netfilter nf_tables counter module"
 
 
 
 514	help
 515	  This option adds the "counter" expression that you can use to
 516	  include packet and byte counters in a rule.
 517
 518config NFT_LOG
 519	tristate "Netfilter nf_tables log module"
 520	help
 521	  This option adds the "log" expression that you can use to log
 522	  packets matching some criteria.
 523
 524config NFT_LIMIT
 525	tristate "Netfilter nf_tables limit module"
 526	help
 527	  This option adds the "limit" expression that you can use to
 528	  ratelimit rule matchings.
 529
 530config NFT_MASQ
 531	depends on NF_CONNTRACK
 532	depends on NF_NAT
 
 533	tristate "Netfilter nf_tables masquerade support"
 534	help
 535	  This option adds the "masquerade" expression that you can use
 536	  to perform NAT in the masquerade flavour.
 537
 538config NFT_REDIR
 539	depends on NF_CONNTRACK
 540	depends on NF_NAT
 541	tristate "Netfilter nf_tables redirect support"
 
 542	help
 543	  This options adds the "redirect" expression that you can use
 544	  to perform NAT in the redirect flavour.
 545
 546config NFT_NAT
 547	depends on NF_CONNTRACK
 548	select NF_NAT
 
 549	tristate "Netfilter nf_tables nat module"
 550	help
 551	  This option adds the "nat" expression that you can use to perform
 552	  typical Network Address Translation (NAT) packet transformations.
 553
 554config NFT_OBJREF
 555	tristate "Netfilter nf_tables stateful object reference module"
 556	help
 557	  This option adds the "objref" expression that allows you to refer to
 558	  stateful objects, such as counters and quotas.
 559
 560config NFT_QUEUE
 561	depends on NETFILTER_NETLINK_QUEUE
 562	tristate "Netfilter nf_tables queue module"
 563	help
 564	  This is required if you intend to use the userspace queueing
 565	  infrastructure (also known as NFQUEUE) from nftables.
 566
 567config NFT_QUOTA
 568	tristate "Netfilter nf_tables quota module"
 569	help
 570	  This option adds the "quota" expression that you can use to match
 571	  enforce bytes quotas.
 572
 573config NFT_REJECT
 574	default m if NETFILTER_ADVANCED=n
 575	tristate "Netfilter nf_tables reject support"
 
 576	help
 577	  This option adds the "reject" expression that you can use to
 578	  explicitly deny and notify via TCP reset/ICMP informational errors
 579	  unallowed traffic.
 580
 581config NFT_REJECT_INET
 582	depends on NF_TABLES_INET
 583	default NFT_REJECT
 584	tristate
 585
 586config NFT_COMPAT
 587	depends on NETFILTER_XTABLES
 588	tristate "Netfilter x_tables over nf_tables module"
 589	help
 590	  This is required if you intend to use any of existing
 591	  x_tables match/target extensions over the nf_tables
 592	  framework.
 593
 594config NFT_HASH
 595	tristate "Netfilter nf_tables hash module"
 596	help
 597	  This option adds the "hash" expression that you can use to perform
 598	  a hash operation on registers.
 599
 600config NFT_FIB
 601	tristate
 602
 603config NFT_FIB_INET
 604	depends on NF_TABLES_INET
 605	depends on NFT_FIB_IPV4
 606	depends on NFT_FIB_IPV6
 607	tristate "Netfilter nf_tables fib inet support"
 608	help
 609	  This option allows using the FIB expression from the inet table.
 610	  The lookup will be delegated to the IPv4 or IPv6 FIB depending
 611	  on the protocol of the packet.
 612
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 613if NF_TABLES_NETDEV
 614
 615config NF_DUP_NETDEV
 616	tristate "Netfilter packet duplication support"
 617	help
 618	  This option enables the generic packet duplication infrastructure
 619	  for Netfilter.
 620
 621config NFT_DUP_NETDEV
 622	tristate "Netfilter nf_tables netdev packet duplication support"
 623	select NF_DUP_NETDEV
 624	help
 625	  This option enables packet duplication for the "netdev" family.
 626
 627config NFT_FWD_NETDEV
 628	tristate "Netfilter nf_tables netdev packet forwarding support"
 629	select NF_DUP_NETDEV
 630	help
 631	  This option enables packet forwarding for the "netdev" family.
 632
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 633endif # NF_TABLES_NETDEV
 634
 635endif # NF_TABLES
 636
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 637config NETFILTER_XTABLES
 638	tristate "Netfilter Xtables support (required for ip_tables)"
 639	default m if NETFILTER_ADVANCED=n
 640	help
 641	  This is required if you intend to use any of ip_tables,
 642	  ip6_tables or arp_tables.
 643
 644if NETFILTER_XTABLES
 645
 
 
 
 
 
 
 
 
 
 
 646comment "Xtables combined modules"
 647
 648config NETFILTER_XT_MARK
 649	tristate 'nfmark target and match support'
 650	default m if NETFILTER_ADVANCED=n
 651	---help---
 652	This option adds the "MARK" target and "mark" match.
 653
 654	Netfilter mark matching allows you to match packets based on the
 655	"nfmark" value in the packet.
 656	The target allows you to create rules in the "mangle" table which alter
 657	the netfilter mark (nfmark) field associated with the packet.
 658
 659	Prior to routing, the nfmark can influence the routing method and can
 660	also be used by other subsystems to change their behavior.
 661
 662config NETFILTER_XT_CONNMARK
 663	tristate 'ctmark target and match support'
 664	depends on NF_CONNTRACK
 665	depends on NETFILTER_ADVANCED
 666	select NF_CONNTRACK_MARK
 667	---help---
 668	This option adds the "CONNMARK" target and "connmark" match.
 669
 670	Netfilter allows you to store a mark value per connection (a.k.a.
 671	ctmark), similarly to the packet mark (nfmark). Using this
 672	target and match, you can set and match on this mark.
 673
 674config NETFILTER_XT_SET
 675	tristate 'set target and match support'
 676	depends on IP_SET
 677	depends on NETFILTER_ADVANCED
 678	help
 679	  This option adds the "SET" target and "set" match.
 680
 681	  Using this target and match, you can add/delete and match
 682	  elements in the sets created by ipset(8).
 683
 684	  To compile it as a module, choose M here.  If unsure, say N.
 685
 686# alphabetically ordered list of targets
 687
 688comment "Xtables targets"
 689
 690config NETFILTER_XT_TARGET_AUDIT
 691	tristate "AUDIT target support"
 692	depends on AUDIT
 693	depends on NETFILTER_ADVANCED
 694	---help---
 695	  This option adds a 'AUDIT' target, which can be used to create
 696	  audit records for packets dropped/accepted.
 697
 698	  To compileit as a module, choose M here. If unsure, say N.
 699
 700config NETFILTER_XT_TARGET_CHECKSUM
 701	tristate "CHECKSUM target support"
 702	depends on IP_NF_MANGLE || IP6_NF_MANGLE
 703	depends on NETFILTER_ADVANCED
 704	---help---
 705	  This option adds a `CHECKSUM' target, which can be used in the iptables mangle
 706	  table.
 707
 708	  You can use this target to compute and fill in the checksum in
 709	  a packet that lacks a checksum.  This is particularly useful,
 710	  if you need to work around old applications such as dhcp clients,
 711	  that do not work well with checksum offloads, but don't want to disable
 712	  checksum offload in your device.
 713
 714	  To compile it as a module, choose M here.  If unsure, say N.
 715
 716config NETFILTER_XT_TARGET_CLASSIFY
 717	tristate '"CLASSIFY" target support'
 718	depends on NETFILTER_ADVANCED
 719	help
 720	  This option adds a `CLASSIFY' target, which enables the user to set
 721	  the priority of a packet. Some qdiscs can use this value for
 722	  classification, among these are:
 723
 724  	  atm, cbq, dsmark, pfifo_fast, htb, prio
 725
 726	  To compile it as a module, choose M here.  If unsure, say N.
 727
 728config NETFILTER_XT_TARGET_CONNMARK
 729	tristate  '"CONNMARK" target support'
 730	depends on NF_CONNTRACK
 731	depends on NETFILTER_ADVANCED
 732	select NETFILTER_XT_CONNMARK
 733	---help---
 734	This is a backwards-compat option for the user's convenience
 735	(e.g. when running oldconfig). It selects
 736	CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
 737
 738config NETFILTER_XT_TARGET_CONNSECMARK
 739	tristate '"CONNSECMARK" target support'
 740	depends on NF_CONNTRACK && NF_CONNTRACK_SECMARK
 741	default m if NETFILTER_ADVANCED=n
 742	help
 743	  The CONNSECMARK target copies security markings from packets
 744	  to connections, and restores security markings from connections
 745	  to packets (if the packets are not already marked).  This would
 746	  normally be used in conjunction with the SECMARK target.
 747
 748	  To compile it as a module, choose M here.  If unsure, say N.
 749
 750config NETFILTER_XT_TARGET_CT
 751	tristate '"CT" target support'
 752	depends on NF_CONNTRACK
 753	depends on IP_NF_RAW || IP6_NF_RAW
 754	depends on NETFILTER_ADVANCED
 755	help
 756	  This options adds a `CT' target, which allows to specify initial
 757	  connection tracking parameters like events to be delivered and
 758	  the helper to be used.
 759
 760	  To compile it as a module, choose M here.  If unsure, say N.
 761
 762config NETFILTER_XT_TARGET_DSCP
 763	tristate '"DSCP" and "TOS" target support'
 764	depends on IP_NF_MANGLE || IP6_NF_MANGLE
 765	depends on NETFILTER_ADVANCED
 766	help
 767	  This option adds a `DSCP' target, which allows you to manipulate
 768	  the IPv4/IPv6 header DSCP field (differentiated services codepoint).
 769
 770	  The DSCP field can have any value between 0x0 and 0x3f inclusive.
 771
 772	  It also adds the "TOS" target, which allows you to create rules in
 773	  the "mangle" table which alter the Type Of Service field of an IPv4
 774	  or the Priority field of an IPv6 packet, prior to routing.
 775
 776	  To compile it as a module, choose M here.  If unsure, say N.
 777
 778config NETFILTER_XT_TARGET_HL
 779	tristate '"HL" hoplimit target support'
 780	depends on IP_NF_MANGLE || IP6_NF_MANGLE
 781	depends on NETFILTER_ADVANCED
 782	---help---
 783	This option adds the "HL" (for IPv6) and "TTL" (for IPv4)
 784	targets, which enable the user to change the
 785	hoplimit/time-to-live value of the IP header.
 786
 787	While it is safe to decrement the hoplimit/TTL value, the
 788	modules also allow to increment and set the hoplimit value of
 789	the header to arbitrary values. This is EXTREMELY DANGEROUS
 790	since you can easily create immortal packets that loop
 791	forever on the network.
 792
 793config NETFILTER_XT_TARGET_HMARK
 794	tristate '"HMARK" target support'
 795	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
 796	depends on NETFILTER_ADVANCED
 797	---help---
 798	This option adds the "HMARK" target.
 799
 800	The target allows you to create rules in the "raw" and "mangle" tables
 801	which set the skbuff mark by means of hash calculation within a given
 802	range. The nfmark can influence the routing method and can also be used
 803	by other subsystems to change their behaviour.
 804
 805	To compile it as a module, choose M here. If unsure, say N.
 806
 807config NETFILTER_XT_TARGET_IDLETIMER
 808	tristate  "IDLETIMER target support"
 809	depends on NETFILTER_ADVANCED
 810	help
 811
 812	  This option adds the `IDLETIMER' target.  Each matching packet
 813	  resets the timer associated with label specified when the rule is
 814	  added.  When the timer expires, it triggers a sysfs notification.
 815	  The remaining time for expiration can be read via sysfs.
 816
 817	  To compile it as a module, choose M here.  If unsure, say N.
 818
 819config NETFILTER_XT_TARGET_LED
 820	tristate '"LED" target support'
 821	depends on LEDS_CLASS && LEDS_TRIGGERS
 822	depends on NETFILTER_ADVANCED
 823	help
 824	  This option adds a `LED' target, which allows you to blink LEDs in
 825	  response to particular packets passing through your machine.
 826
 827	  This can be used to turn a spare LED into a network activity LED,
 828	  which only flashes in response to FTP transfers, for example.  Or
 829	  you could have an LED which lights up for a minute or two every time
 830	  somebody connects to your machine via SSH.
 831
 832	  You will need support for the "led" class to make this work.
 833
 834	  To create an LED trigger for incoming SSH traffic:
 835	    iptables -A INPUT -p tcp --dport 22 -j LED --led-trigger-id ssh --led-delay 1000
 836
 837	  Then attach the new trigger to an LED on your system:
 838	    echo netfilter-ssh > /sys/class/leds/<ledname>/trigger
 839
 840	  For more information on the LEDs available on your system, see
 841	  Documentation/leds/leds-class.txt
 842
 843config NETFILTER_XT_TARGET_LOG
 844	tristate "LOG target support"
 845	select NF_LOG_COMMON
 846	select NF_LOG_IPV4
 847	select NF_LOG_IPV6 if IPV6
 848	default m if NETFILTER_ADVANCED=n
 849	help
 850	  This option adds a `LOG' target, which allows you to create rules in
 851	  any iptables table which records the packet header to the syslog.
 852
 853	  To compile it as a module, choose M here.  If unsure, say N.
 854
 855config NETFILTER_XT_TARGET_MARK
 856	tristate '"MARK" target support'
 857	depends on NETFILTER_ADVANCED
 858	select NETFILTER_XT_MARK
 859	---help---
 860	This is a backwards-compat option for the user's convenience
 861	(e.g. when running oldconfig). It selects
 862	CONFIG_NETFILTER_XT_MARK (combined mark/MARK module).
 863
 864config NETFILTER_XT_NAT
 865	tristate '"SNAT and DNAT" targets support'
 866	depends on NF_NAT
 867	---help---
 868	This option enables the SNAT and DNAT targets.
 869
 870	To compile it as a module, choose M here. If unsure, say N.
 871
 872config NETFILTER_XT_TARGET_NETMAP
 873	tristate '"NETMAP" target support'
 874	depends on NF_NAT
 875	---help---
 876	NETMAP is an implementation of static 1:1 NAT mapping of network
 877	addresses. It maps the network address part, while keeping the host
 878	address part intact.
 879
 880	To compile it as a module, choose M here. If unsure, say N.
 881
 882config NETFILTER_XT_TARGET_NFLOG
 883	tristate '"NFLOG" target support'
 884	default m if NETFILTER_ADVANCED=n
 885	select NETFILTER_NETLINK_LOG
 886	help
 887	  This option enables the NFLOG target, which allows to LOG
 888	  messages through nfnetlink_log.
 889
 890	  To compile it as a module, choose M here.  If unsure, say N.
 891
 892config NETFILTER_XT_TARGET_NFQUEUE
 893	tristate '"NFQUEUE" target Support'
 894	depends on NETFILTER_ADVANCED
 895	select NETFILTER_NETLINK_QUEUE
 896	help
 897	  This target replaced the old obsolete QUEUE target.
 898
 899	  As opposed to QUEUE, it supports 65535 different queues,
 900	  not just one.
 901
 902	  To compile it as a module, choose M here.  If unsure, say N.
 903
 904config NETFILTER_XT_TARGET_NOTRACK
 905	tristate  '"NOTRACK" target support (DEPRECATED)'
 906	depends on NF_CONNTRACK
 907	depends on IP_NF_RAW || IP6_NF_RAW
 908	depends on NETFILTER_ADVANCED
 909	select NETFILTER_XT_TARGET_CT
 910
 911config NETFILTER_XT_TARGET_RATEEST
 912	tristate '"RATEEST" target support'
 913	depends on NETFILTER_ADVANCED
 914	help
 915	  This option adds a `RATEEST' target, which allows to measure
 916	  rates similar to TC estimators. The `rateest' match can be
 917	  used to match on the measured rates.
 918
 919	  To compile it as a module, choose M here.  If unsure, say N.
 920
 921config NETFILTER_XT_TARGET_REDIRECT
 922	tristate "REDIRECT target support"
 923	depends on NF_NAT
 924	select NF_NAT_REDIRECT
 925	---help---
 926	REDIRECT is a special case of NAT: all incoming connections are
 927	mapped onto the incoming interface's address, causing the packets to
 928	come to the local machine instead of passing through. This is
 929	useful for transparent proxies.
 930
 931	To compile it as a module, choose M here. If unsure, say N.
 932
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 933config NETFILTER_XT_TARGET_TEE
 934	tristate '"TEE" - packet cloning to alternate destination'
 935	depends on NETFILTER_ADVANCED
 936	depends on IPV6 || IPV6=n
 937	depends on !NF_CONNTRACK || NF_CONNTRACK
 
 938	select NF_DUP_IPV4
 939	select NF_DUP_IPV6 if IPV6
 940	---help---
 941	This option adds a "TEE" target with which a packet can be cloned and
 942	this clone be rerouted to another nexthop.
 943
 944config NETFILTER_XT_TARGET_TPROXY
 945	tristate '"TPROXY" target transparent proxying support'
 946	depends on NETFILTER_XTABLES
 947	depends on NETFILTER_ADVANCED
 948	depends on IPV6 || IPV6=n
 949	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
 950	depends on IP_NF_MANGLE
 951	select NF_DEFRAG_IPV4
 952	select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES != n
 
 
 953	help
 954	  This option adds a `TPROXY' target, which is somewhat similar to
 955	  REDIRECT.  It can only be used in the mangle table and is useful
 956	  to redirect traffic to a transparent proxy.  It does _not_ depend
 957	  on Netfilter connection tracking and NAT, unlike REDIRECT.
 958	  For it to work you will have to configure certain iptables rules
 959	  and use policy routing. For more information on how to set it up
 960	  see Documentation/networking/tproxy.txt.
 961
 962	  To compile it as a module, choose M here.  If unsure, say N.
 963
 964config NETFILTER_XT_TARGET_TRACE
 965	tristate  '"TRACE" target support'
 966	depends on IP_NF_RAW || IP6_NF_RAW
 967	depends on NETFILTER_ADVANCED
 968	help
 969	  The TRACE target allows you to mark packets so that the kernel
 970	  will log every rule which match the packets as those traverse
 971	  the tables, chains, rules.
 972
 973	  If you want to compile it as a module, say M here and read
 974	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
 975
 976config NETFILTER_XT_TARGET_SECMARK
 977	tristate '"SECMARK" target support'
 978	depends on NETWORK_SECMARK
 979	default m if NETFILTER_ADVANCED=n
 980	help
 981	  The SECMARK target allows security marking of network
 982	  packets, for use with security subsystems.
 983
 984	  To compile it as a module, choose M here.  If unsure, say N.
 985
 986config NETFILTER_XT_TARGET_TCPMSS
 987	tristate '"TCPMSS" target support'
 988	depends on IPV6 || IPV6=n
 989	default m if NETFILTER_ADVANCED=n
 990	---help---
 991	  This option adds a `TCPMSS' target, which allows you to alter the
 992	  MSS value of TCP SYN packets, to control the maximum size for that
 993	  connection (usually limiting it to your outgoing interface's MTU
 994	  minus 40).
 995
 996	  This is used to overcome criminally braindead ISPs or servers which
 997	  block ICMP Fragmentation Needed packets.  The symptoms of this
 998	  problem are that everything works fine from your Linux
 999	  firewall/router, but machines behind it can never exchange large
1000	  packets:
1001	        1) Web browsers connect, then hang with no data received.
1002	        2) Small mail works fine, but large emails hang.
1003	        3) ssh works fine, but scp hangs after initial handshaking.
1004
1005	  Workaround: activate this option and add a rule to your firewall
1006	  configuration like:
1007
1008	  iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
1009	                 -j TCPMSS --clamp-mss-to-pmtu
1010
1011	  To compile it as a module, choose M here.  If unsure, say N.
1012
1013config NETFILTER_XT_TARGET_TCPOPTSTRIP
1014	tristate '"TCPOPTSTRIP" target support'
1015	depends on IP_NF_MANGLE || IP6_NF_MANGLE
1016	depends on NETFILTER_ADVANCED
1017	help
1018	  This option adds a "TCPOPTSTRIP" target, which allows you to strip
1019	  TCP options from TCP packets.
1020
1021# alphabetically ordered list of matches
1022
1023comment "Xtables matches"
1024
1025config NETFILTER_XT_MATCH_ADDRTYPE
1026	tristate '"addrtype" address type match support'
1027	default m if NETFILTER_ADVANCED=n
1028	---help---
1029	  This option allows you to match what routing thinks of an address,
1030	  eg. UNICAST, LOCAL, BROADCAST, ...
1031
1032	  If you want to compile it as a module, say M here and read
1033	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1034
1035config NETFILTER_XT_MATCH_BPF
1036	tristate '"bpf" match support'
1037	depends on NETFILTER_ADVANCED
1038	help
1039	  BPF matching applies a linux socket filter to each packet and
1040	  accepts those for which the filter returns non-zero.
1041
1042	  To compile it as a module, choose M here.  If unsure, say N.
1043
1044config NETFILTER_XT_MATCH_CGROUP
1045	tristate '"control group" match support'
1046	depends on NETFILTER_ADVANCED
1047	depends on CGROUPS
1048	select CGROUP_NET_CLASSID
1049	---help---
1050	Socket/process control group matching allows you to match locally
1051	generated packets based on which net_cls control group processes
1052	belong to.
1053
1054config NETFILTER_XT_MATCH_CLUSTER
1055	tristate '"cluster" match support'
1056	depends on NF_CONNTRACK
1057	depends on NETFILTER_ADVANCED
1058	---help---
1059	  This option allows you to build work-load-sharing clusters of
1060	  network servers/stateful firewalls without having a dedicated
1061	  load-balancing router/server/switch. Basically, this match returns
1062	  true when the packet must be handled by this cluster node. Thus,
1063	  all nodes see all packets and this match decides which node handles
1064	  what packets. The work-load sharing algorithm is based on source
1065	  address hashing.
1066
1067	  If you say Y or M here, try `iptables -m cluster --help` for
1068	  more information.
1069
1070config NETFILTER_XT_MATCH_COMMENT
1071	tristate  '"comment" match support'
1072	depends on NETFILTER_ADVANCED
1073	help
1074	  This option adds a `comment' dummy-match, which allows you to put
1075	  comments in your iptables ruleset.
1076
1077	  If you want to compile it as a module, say M here and read
1078	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1079
1080config NETFILTER_XT_MATCH_CONNBYTES
1081	tristate  '"connbytes" per-connection counter match support'
1082	depends on NF_CONNTRACK
1083	depends on NETFILTER_ADVANCED
1084	help
1085	  This option adds a `connbytes' match, which allows you to match the
1086	  number of bytes and/or packets for each direction within a connection.
1087
1088	  If you want to compile it as a module, say M here and read
1089	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1090
1091config NETFILTER_XT_MATCH_CONNLABEL
1092	tristate '"connlabel" match support'
1093	select NF_CONNTRACK_LABELS
1094	depends on NF_CONNTRACK
1095	depends on NETFILTER_ADVANCED
1096	---help---
1097	  This match allows you to test and assign userspace-defined labels names
1098	  to a connection.  The kernel only stores bit values - mapping
1099	  names to bits is done by userspace.
1100
1101	  Unlike connmark, more than 32 flag bits may be assigned to a
1102	  connection simultaneously.
1103
1104config NETFILTER_XT_MATCH_CONNLIMIT
1105	tristate '"connlimit" match support'
1106	depends on NF_CONNTRACK
1107	depends on NETFILTER_ADVANCED
1108	---help---
 
1109	  This match allows you to match against the number of parallel
1110	  connections to a server per client IP address (or address block).
1111
1112config NETFILTER_XT_MATCH_CONNMARK
1113	tristate  '"connmark" connection mark match support'
1114	depends on NF_CONNTRACK
1115	depends on NETFILTER_ADVANCED
1116	select NETFILTER_XT_CONNMARK
1117	---help---
1118	This is a backwards-compat option for the user's convenience
1119	(e.g. when running oldconfig). It selects
1120	CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
1121
1122config NETFILTER_XT_MATCH_CONNTRACK
1123	tristate '"conntrack" connection tracking match support'
1124	depends on NF_CONNTRACK
1125	default m if NETFILTER_ADVANCED=n
1126	help
1127	  This is a general conntrack match module, a superset of the state match.
1128
1129	  It allows matching on additional conntrack information, which is
1130	  useful in complex configurations, such as NAT gateways with multiple
1131	  internet links or tunnels.
1132
1133	  To compile it as a module, choose M here.  If unsure, say N.
1134
1135config NETFILTER_XT_MATCH_CPU
1136	tristate '"cpu" match support'
1137	depends on NETFILTER_ADVANCED
1138	help
1139	  CPU matching allows you to match packets based on the CPU
1140	  currently handling the packet.
1141
1142	  To compile it as a module, choose M here.  If unsure, say N.
1143
1144config NETFILTER_XT_MATCH_DCCP
1145	tristate '"dccp" protocol match support'
1146	depends on NETFILTER_ADVANCED
1147	default IP_DCCP
1148	help
1149	  With this option enabled, you will be able to use the iptables
1150	  `dccp' match in order to match on DCCP source/destination ports
1151	  and DCCP flags.
1152
1153	  If you want to compile it as a module, say M here and read
1154	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1155
1156config NETFILTER_XT_MATCH_DEVGROUP
1157	tristate '"devgroup" match support'
1158	depends on NETFILTER_ADVANCED
1159	help
1160	  This options adds a `devgroup' match, which allows to match on the
1161	  device group a network device is assigned to.
1162
1163	  To compile it as a module, choose M here.  If unsure, say N.
1164
1165config NETFILTER_XT_MATCH_DSCP
1166	tristate '"dscp" and "tos" match support'
1167	depends on NETFILTER_ADVANCED
1168	help
1169	  This option adds a `DSCP' match, which allows you to match against
1170	  the IPv4/IPv6 header DSCP field (differentiated services codepoint).
1171
1172	  The DSCP field can have any value between 0x0 and 0x3f inclusive.
1173
1174	  It will also add a "tos" match, which allows you to match packets
1175	  based on the Type Of Service fields of the IPv4 packet (which share
1176	  the same bits as DSCP).
1177
1178	  To compile it as a module, choose M here.  If unsure, say N.
1179
1180config NETFILTER_XT_MATCH_ECN
1181	tristate '"ecn" match support'
1182	depends on NETFILTER_ADVANCED
1183	---help---
1184	This option adds an "ECN" match, which allows you to match against
1185	the IPv4 and TCP header ECN fields.
1186
1187	To compile it as a module, choose M here. If unsure, say N.
1188
1189config NETFILTER_XT_MATCH_ESP
1190	tristate '"esp" match support'
1191	depends on NETFILTER_ADVANCED
1192	help
1193	  This match extension allows you to match a range of SPIs
1194	  inside ESP header of IPSec packets.
1195
1196	  To compile it as a module, choose M here.  If unsure, say N.
1197
1198config NETFILTER_XT_MATCH_HASHLIMIT
1199	tristate '"hashlimit" match support'
1200	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
1201	depends on NETFILTER_ADVANCED
1202	help
1203	  This option adds a `hashlimit' match.
1204
1205	  As opposed to `limit', this match dynamically creates a hash table
1206	  of limit buckets, based on your selection of source/destination
1207	  addresses and/or ports.
1208
1209	  It enables you to express policies like `10kpps for any given
1210	  destination address' or `500pps from any given source address'
1211	  with a single rule.
1212
1213config NETFILTER_XT_MATCH_HELPER
1214	tristate '"helper" match support'
1215	depends on NF_CONNTRACK
1216	depends on NETFILTER_ADVANCED
1217	help
1218	  Helper matching allows you to match packets in dynamic connections
1219	  tracked by a conntrack-helper, ie. ip_conntrack_ftp
1220
1221	  To compile it as a module, choose M here.  If unsure, say Y.
1222
1223config NETFILTER_XT_MATCH_HL
1224	tristate '"hl" hoplimit/TTL match support'
1225	depends on NETFILTER_ADVANCED
1226	---help---
1227	HL matching allows you to match packets based on the hoplimit
1228	in the IPv6 header, or the time-to-live field in the IPv4
1229	header of the packet.
1230
1231config NETFILTER_XT_MATCH_IPCOMP
1232	tristate '"ipcomp" match support'
1233	depends on NETFILTER_ADVANCED
1234	help
1235	  This match extension allows you to match a range of CPIs(16 bits)
1236	  inside IPComp header of IPSec packets.
1237
1238	  To compile it as a module, choose M here.  If unsure, say N.
1239
1240config NETFILTER_XT_MATCH_IPRANGE
1241	tristate '"iprange" address range match support'
1242	depends on NETFILTER_ADVANCED
1243	---help---
1244	This option adds a "iprange" match, which allows you to match based on
1245	an IP address range. (Normal iptables only matches on single addresses
1246	with an optional mask.)
1247
1248	If unsure, say M.
1249
1250config NETFILTER_XT_MATCH_IPVS
1251	tristate '"ipvs" match support'
1252	depends on IP_VS
1253	depends on NETFILTER_ADVANCED
1254	depends on NF_CONNTRACK
1255	help
1256	  This option allows you to match against IPVS properties of a packet.
1257
1258	  If unsure, say N.
1259
1260config NETFILTER_XT_MATCH_L2TP
1261	tristate '"l2tp" match support'
1262	depends on NETFILTER_ADVANCED
1263	default L2TP
1264	---help---
1265	This option adds an "L2TP" match, which allows you to match against
1266	L2TP protocol header fields.
1267
1268	To compile it as a module, choose M here. If unsure, say N.
1269
1270config NETFILTER_XT_MATCH_LENGTH
1271	tristate '"length" match support'
1272	depends on NETFILTER_ADVANCED
1273	help
1274	  This option allows you to match the length of a packet against a
1275	  specific value or range of values.
1276
1277	  To compile it as a module, choose M here.  If unsure, say N.
1278
1279config NETFILTER_XT_MATCH_LIMIT
1280	tristate '"limit" match support'
1281	depends on NETFILTER_ADVANCED
1282	help
1283	  limit matching allows you to control the rate at which a rule can be
1284	  matched: mainly useful in combination with the LOG target ("LOG
1285	  target support", below) and to avoid some Denial of Service attacks.
1286
1287	  To compile it as a module, choose M here.  If unsure, say N.
1288
1289config NETFILTER_XT_MATCH_MAC
1290	tristate '"mac" address match support'
1291	depends on NETFILTER_ADVANCED
1292	help
1293	  MAC matching allows you to match packets based on the source
1294	  Ethernet address of the packet.
1295
1296	  To compile it as a module, choose M here.  If unsure, say N.
1297
1298config NETFILTER_XT_MATCH_MARK
1299	tristate '"mark" match support'
1300	depends on NETFILTER_ADVANCED
1301	select NETFILTER_XT_MARK
1302	---help---
1303	This is a backwards-compat option for the user's convenience
1304	(e.g. when running oldconfig). It selects
1305	CONFIG_NETFILTER_XT_MARK (combined mark/MARK module).
1306
1307config NETFILTER_XT_MATCH_MULTIPORT
1308	tristate '"multiport" Multiple port match support'
1309	depends on NETFILTER_ADVANCED
1310	help
1311	  Multiport matching allows you to match TCP or UDP packets based on
1312	  a series of source or destination ports: normally a rule can only
1313	  match a single range of ports.
1314
1315	  To compile it as a module, choose M here.  If unsure, say N.
1316
1317config NETFILTER_XT_MATCH_NFACCT
1318	tristate '"nfacct" match support'
1319	depends on NETFILTER_ADVANCED
1320	select NETFILTER_NETLINK_ACCT
1321	help
1322	  This option allows you to use the extended accounting through
1323	  nfnetlink_acct.
1324
1325	  To compile it as a module, choose M here.  If unsure, say N.
1326
1327config NETFILTER_XT_MATCH_OSF
1328	tristate '"osf" Passive OS fingerprint match'
1329	depends on NETFILTER_ADVANCED && NETFILTER_NETLINK
 
1330	help
1331	  This option selects the Passive OS Fingerprinting match module
1332	  that allows to passively match the remote operating system by
1333	  analyzing incoming TCP SYN packets.
1334
1335	  Rules and loading software can be downloaded from
1336	  http://www.ioremap.net/projects/osf
1337
1338	  To compile it as a module, choose M here.  If unsure, say N.
1339
1340config NETFILTER_XT_MATCH_OWNER
1341	tristate '"owner" match support'
1342	depends on NETFILTER_ADVANCED
1343	---help---
1344	Socket owner matching allows you to match locally-generated packets
1345	based on who created the socket: the user or group. It is also
1346	possible to check whether a socket actually exists.
1347
1348config NETFILTER_XT_MATCH_POLICY
1349	tristate 'IPsec "policy" match support'
1350	depends on XFRM
1351	default m if NETFILTER_ADVANCED=n
1352	help
1353	  Policy matching allows you to match packets based on the
1354	  IPsec policy that was used during decapsulation/will
1355	  be used during encapsulation.
1356
1357	  To compile it as a module, choose M here.  If unsure, say N.
1358
1359config NETFILTER_XT_MATCH_PHYSDEV
1360	tristate '"physdev" match support'
1361	depends on BRIDGE && BRIDGE_NETFILTER
1362	depends on NETFILTER_ADVANCED
1363	help
1364	  Physdev packet matching matches against the physical bridge ports
1365	  the IP packet arrived on or will leave by.
1366
1367	  To compile it as a module, choose M here.  If unsure, say N.
1368
1369config NETFILTER_XT_MATCH_PKTTYPE
1370	tristate '"pkttype" packet type match support'
1371	depends on NETFILTER_ADVANCED
1372	help
1373	  Packet type matching allows you to match a packet by
1374	  its "class", eg. BROADCAST, MULTICAST, ...
1375
1376	  Typical usage:
1377	  iptables -A INPUT -m pkttype --pkt-type broadcast -j LOG
1378
1379	  To compile it as a module, choose M here.  If unsure, say N.
1380
1381config NETFILTER_XT_MATCH_QUOTA
1382	tristate '"quota" match support'
1383	depends on NETFILTER_ADVANCED
1384	help
1385	  This option adds a `quota' match, which allows to match on a
1386	  byte counter.
1387
1388	  If you want to compile it as a module, say M here and read
1389	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1390
1391config NETFILTER_XT_MATCH_RATEEST
1392	tristate '"rateest" match support'
1393	depends on NETFILTER_ADVANCED
1394	select NETFILTER_XT_TARGET_RATEEST
1395	help
1396	  This option adds a `rateest' match, which allows to match on the
1397	  rate estimated by the RATEEST target.
1398
1399	  To compile it as a module, choose M here.  If unsure, say N.
1400
1401config NETFILTER_XT_MATCH_REALM
1402	tristate  '"realm" match support'
1403	depends on NETFILTER_ADVANCED
1404	select IP_ROUTE_CLASSID
1405	help
1406	  This option adds a `realm' match, which allows you to use the realm
1407	  key from the routing subsystem inside iptables.
1408
1409	  This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option 
1410	  in tc world.
1411
1412	  If you want to compile it as a module, say M here and read
1413	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1414
1415config NETFILTER_XT_MATCH_RECENT
1416	tristate '"recent" match support'
1417	depends on NETFILTER_ADVANCED
1418	---help---
1419	This match is used for creating one or many lists of recently
1420	used addresses and then matching against that/those list(s).
1421
1422	Short options are available by using 'iptables -m recent -h'
1423	Official Website: <http://snowman.net/projects/ipt_recent/>
1424
1425config NETFILTER_XT_MATCH_SCTP
1426	tristate  '"sctp" protocol match support'
1427	depends on NETFILTER_ADVANCED
1428	default IP_SCTP
1429	help
1430	  With this option enabled, you will be able to use the 
1431	  `sctp' match in order to match on SCTP source/destination ports
1432	  and SCTP chunk types.
1433
1434	  If you want to compile it as a module, say M here and read
1435	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1436
1437config NETFILTER_XT_MATCH_SOCKET
1438	tristate '"socket" match support'
1439	depends on NETFILTER_XTABLES
1440	depends on NETFILTER_ADVANCED
1441	depends on IPV6 || IPV6=n
1442	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
1443	depends on NF_SOCKET_IPV4
1444	depends on NF_SOCKET_IPV6
1445	select NF_DEFRAG_IPV4
1446	select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES != n
1447	help
1448	  This option adds a `socket' match, which can be used to match
1449	  packets for which a TCP or UDP socket lookup finds a valid socket.
1450	  It can be used in combination with the MARK target and policy
1451	  routing to implement full featured non-locally bound sockets.
1452
1453	  To compile it as a module, choose M here.  If unsure, say N.
1454
1455config NETFILTER_XT_MATCH_STATE
1456	tristate '"state" match support'
1457	depends on NF_CONNTRACK
1458	default m if NETFILTER_ADVANCED=n
1459	help
1460	  Connection state matching allows you to match packets based on their
1461	  relationship to a tracked connection (ie. previous packets).  This
1462	  is a powerful tool for packet classification.
1463
1464	  To compile it as a module, choose M here.  If unsure, say N.
1465
1466config NETFILTER_XT_MATCH_STATISTIC
1467	tristate '"statistic" match support'
1468	depends on NETFILTER_ADVANCED
1469	help
1470	  This option adds a `statistic' match, which allows you to match
1471	  on packets periodically or randomly with a given percentage.
1472
1473	  To compile it as a module, choose M here.  If unsure, say N.
1474
1475config NETFILTER_XT_MATCH_STRING
1476	tristate  '"string" match support'
1477	depends on NETFILTER_ADVANCED
1478	select TEXTSEARCH
1479	select TEXTSEARCH_KMP
1480	select TEXTSEARCH_BM
1481	select TEXTSEARCH_FSM
1482	help
1483	  This option adds a `string' match, which allows you to look for
1484	  pattern matchings in packets.
1485
1486	  To compile it as a module, choose M here.  If unsure, say N.
1487
1488config NETFILTER_XT_MATCH_TCPMSS
1489	tristate '"tcpmss" match support'
1490	depends on NETFILTER_ADVANCED
1491	help
1492	  This option adds a `tcpmss' match, which allows you to examine the
1493	  MSS value of TCP SYN packets, which control the maximum packet size
1494	  for that connection.
1495
1496	  To compile it as a module, choose M here.  If unsure, say N.
1497
1498config NETFILTER_XT_MATCH_TIME
1499	tristate '"time" match support'
1500	depends on NETFILTER_ADVANCED
1501	---help---
1502	  This option adds a "time" match, which allows you to match based on
1503	  the packet arrival time (at the machine which netfilter is running)
1504	  on) or departure time/date (for locally generated packets).
1505
1506	  If you say Y here, try `iptables -m time --help` for
1507	  more information.
1508
1509	  If you want to compile it as a module, say M here.
1510	  If unsure, say N.
1511
1512config NETFILTER_XT_MATCH_U32
1513	tristate '"u32" match support'
1514	depends on NETFILTER_ADVANCED
1515	---help---
1516	  u32 allows you to extract quantities of up to 4 bytes from a packet,
1517	  AND them with specified masks, shift them by specified amounts and
1518	  test whether the results are in any of a set of specified ranges.
1519	  The specification of what to extract is general enough to skip over
1520	  headers with lengths stored in the packet, as in IP or TCP header
1521	  lengths.
1522
1523	  Details and examples are in the kernel module source.
1524
1525endif # NETFILTER_XTABLES
1526
1527endmenu
1528
1529source "net/netfilter/ipset/Kconfig"
1530
1531source "net/netfilter/ipvs/Kconfig"