1 menu "Core Netfilter Configuration"
2 depends on NET && INET && NETFILTER
4 config NETFILTER_NETLINK
7 config NETFILTER_NETLINK_QUEUE
8 tristate "Netfilter NFQUEUE over NFNETLINK interface"
9 depends on NETFILTER_ADVANCED
10 select NETFILTER_NETLINK
12 If this option is enabled, the kernel will include support
13 for queueing packets via NFNETLINK.
15 config NETFILTER_NETLINK_LOG
16 tristate "Netfilter LOG over NFNETLINK interface"
17 default m if NETFILTER_ADVANCED=n
18 select NETFILTER_NETLINK
20 If this option is enabled, the kernel will include support
21 for logging packets via NFNETLINK.
23 This obsoletes the existing ipt_ULOG and ebg_ulog mechanisms,
24 and is also scheduled to replace the old syslog-based ipt_LOG
28 tristate "Netfilter connection tracking support"
29 default m if NETFILTER_ADVANCED=n
31 Connection tracking keeps a record of what packets have passed
32 through your machine, in order to figure out how they are related
35 This is required to do Masquerading or other kinds of Network
36 Address Translation. It can also be used to enhance packet
37 filtering (see `Connection state match support' below).
39 To compile it as a module, choose M here. If unsure, say N.
44 bool "Connection tracking flow accounting"
45 depends on NETFILTER_ADVANCED
47 If this option is enabled, the connection tracking code will
48 keep per-flow packet and byte counters.
50 Those counters can be used for flow-based accounting or the
53 Please note that currently this option only sets a default state.
54 You may change it at boot time with nf_conntrack.acct=0/1 kernel
55 paramater or by loading the nf_conntrack module with acct=0/1.
57 You may also disable/enable it on a running system with:
58 sysctl net.netfilter.nf_conntrack_acct=0/1
60 This option will be removed in 2.6.29.
64 config NF_CONNTRACK_MARK
65 bool 'Connection mark tracking support'
66 depends on NETFILTER_ADVANCED
68 This option enables support for connection marks, used by the
69 `CONNMARK' target and `connmark' match. Similar to the mark value
70 of packets, but this mark value is kept in the conntrack session
71 instead of the individual packets.
73 config NF_CONNTRACK_SECMARK
74 bool 'Connection tracking security mark support'
75 depends on NETWORK_SECMARK
76 default m if NETFILTER_ADVANCED=n
78 This option enables security markings to be applied to
79 connections. Typically they are copied to connections from
80 packets using the CONNSECMARK target and copied back from
81 connections to packets with the same target, with the packets
82 being originally labeled via SECMARK.
86 config NF_CONNTRACK_EVENTS
87 bool "Connection tracking events"
88 depends on NETFILTER_ADVANCED
90 If this option is enabled, the connection tracking code will
91 provide a notifier chain that can be used by other kernel code
92 to get notified about changes in the connection tracking state.
96 config NF_CT_PROTO_DCCP
97 tristate 'DCCP protocol connection tracking support (EXPERIMENTAL)'
98 depends on EXPERIMENTAL
99 depends on NETFILTER_ADVANCED
102 With this option enabled, the layer 3 independent connection
103 tracking code will be able to do state tracking on DCCP connections.
107 config NF_CT_PROTO_GRE
110 config NF_CT_PROTO_SCTP
111 tristate 'SCTP protocol connection tracking support (EXPERIMENTAL)'
112 depends on EXPERIMENTAL
113 depends on NETFILTER_ADVANCED
116 With this option enabled, the layer 3 independent connection
117 tracking code will be able to do state tracking on SCTP connections.
119 If you want to compile it as a module, say M here and read
120 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
122 config NF_CT_PROTO_UDPLITE
123 tristate 'UDP-Lite protocol connection tracking support'
124 depends on NETFILTER_ADVANCED
126 With this option enabled, the layer 3 independent connection
127 tracking code will be able to do state tracking on UDP-Lite
130 To compile it as a module, choose M here. If unsure, say N.
132 config NF_CONNTRACK_AMANDA
133 tristate "Amanda backup protocol support"
134 depends on NETFILTER_ADVANCED
136 select TEXTSEARCH_KMP
138 If you are running the Amanda backup package <http://www.amanda.org/>
139 on this machine or machines that will be MASQUERADED through this
140 machine, then you may want to enable this feature. This allows the
141 connection tracking and natting code to allow the sub-channels that
142 Amanda requires for communication of the backup data, messages and
145 To compile it as a module, choose M here. If unsure, say N.
147 config NF_CONNTRACK_FTP
148 tristate "FTP protocol support"
149 default m if NETFILTER_ADVANCED=n
151 Tracking FTP connections is problematic: special helpers are
152 required for tracking them, and doing masquerading and other forms
153 of Network Address Translation on them.
155 This is FTP support on Layer 3 independent connection tracking.
156 Layer 3 independent connection tracking is experimental scheme
157 which generalize ip_conntrack to support other layer 3 protocols.
159 To compile it as a module, choose M here. If unsure, say N.
161 config NF_CONNTRACK_H323
162 tristate "H.323 protocol support"
163 depends on (IPV6 || IPV6=n)
164 depends on NETFILTER_ADVANCED
166 H.323 is a VoIP signalling protocol from ITU-T. As one of the most
167 important VoIP protocols, it is widely used by voice hardware and
168 software including voice gateways, IP phones, Netmeeting, OpenPhone,
171 With this module you can support H.323 on a connection tracking/NAT
174 This module supports RAS, Fast Start, H.245 Tunnelling, Call
175 Forwarding, RTP/RTCP and T.120 based audio, video, fax, chat,
176 whiteboard, file transfer, etc. For more information, please
177 visit http://nath323.sourceforge.net/.
179 To compile it as a module, choose M here. If unsure, say N.
181 config NF_CONNTRACK_IRC
182 tristate "IRC protocol support"
183 default m if NETFILTER_ADVANCED=n
185 There is a commonly-used extension to IRC called
186 Direct Client-to-Client Protocol (DCC). This enables users to send
187 files to each other, and also chat to each other without the need
188 of a server. DCC Sending is used anywhere you send files over IRC,
189 and DCC Chat is most commonly used by Eggdrop bots. If you are
190 using NAT, this extension will enable you to send files and initiate
191 chats. Note that you do NOT need this extension to get files or
192 have others initiate chats, or everything else in IRC.
194 To compile it as a module, choose M here. If unsure, say N.
196 config NF_CONNTRACK_NETBIOS_NS
197 tristate "NetBIOS name service protocol support"
198 depends on NETFILTER_ADVANCED
200 NetBIOS name service requests are sent as broadcast messages from an
201 unprivileged port and responded to with unicast messages to the
202 same port. This make them hard to firewall properly because connection
203 tracking doesn't deal with broadcasts. This helper tracks locally
204 originating NetBIOS name service requests and the corresponding
205 responses. It relies on correct IP address configuration, specifically
206 netmask and broadcast address. When properly configured, the output
207 of "ip address show" should look similar to this:
209 $ ip -4 address show eth0
210 4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
211 inet 172.16.2.252/24 brd 172.16.2.255 scope global eth0
213 To compile it as a module, choose M here. If unsure, say N.
215 config NF_CONNTRACK_PPTP
216 tristate "PPtP protocol support"
217 depends on NETFILTER_ADVANCED
218 select NF_CT_PROTO_GRE
220 This module adds support for PPTP (Point to Point Tunnelling
221 Protocol, RFC2637) connection tracking and NAT.
223 If you are running PPTP sessions over a stateful firewall or NAT
224 box, you may want to enable this feature.
226 Please note that not all PPTP modes of operation are supported yet.
227 Specifically these limitations exist:
228 - Blindly assumes that control connections are always established
229 in PNS->PAC direction. This is a violation of RFC2637.
230 - Only supports a single call within each session
232 To compile it as a module, choose M here. If unsure, say N.
234 config NF_CONNTRACK_SANE
235 tristate "SANE protocol support (EXPERIMENTAL)"
236 depends on EXPERIMENTAL
237 depends on NETFILTER_ADVANCED
239 SANE is a protocol for remote access to scanners as implemented
240 by the 'saned' daemon. Like FTP, it uses separate control and
243 With this module you can support SANE on a connection tracking
246 To compile it as a module, choose M here. If unsure, say N.
248 config NF_CONNTRACK_SIP
249 tristate "SIP protocol support"
250 default m if NETFILTER_ADVANCED=n
252 SIP is an application-layer control protocol that can establish,
253 modify, and terminate multimedia sessions (conferences) such as
254 Internet telephony calls. With the ip_conntrack_sip and
255 the nf_nat_sip modules you can support the protocol on a connection
256 tracking/NATing firewall.
258 To compile it as a module, choose M here. If unsure, say N.
260 config NF_CONNTRACK_TFTP
261 tristate "TFTP protocol support"
262 depends on NETFILTER_ADVANCED
264 TFTP connection tracking helper, this is required depending
265 on how restrictive your ruleset is.
266 If you are using a tftp client behind -j SNAT or -j MASQUERADING
269 To compile it as a module, choose M here. If unsure, say N.
272 tristate 'Connection tracking netlink interface'
273 select NETFILTER_NETLINK
274 depends on NF_NAT=n || NF_NAT
275 default m if NETFILTER_ADVANCED=n
277 This option enables support for a netlink-based userspace interface
279 # transparent proxy support
280 config NETFILTER_TPROXY
281 tristate "Transparent proxying support (EXPERIMENTAL)"
282 depends on EXPERIMENTAL
283 depends on IP_NF_MANGLE
284 depends on NETFILTER_ADVANCED
286 This option enables transparent proxying support, that is,
287 support for handling non-locally bound IPv4 TCP and UDP sockets.
288 For it to work you will have to configure certain iptables rules
289 and use policy routing. For more information on how to set it up
290 see Documentation/networking/tproxy.txt.
292 To compile it as a module, choose M here. If unsure, say N.
296 config NETFILTER_XTABLES
297 tristate "Netfilter Xtables support (required for ip_tables)"
298 default m if NETFILTER_ADVANCED=n
300 This is required if you intend to use any of ip_tables,
301 ip6_tables or arp_tables.
305 # alphabetically ordered list of targets
307 config NETFILTER_XT_TARGET_CLASSIFY
308 tristate '"CLASSIFY" target support'
309 depends on NETFILTER_ADVANCED
311 This option adds a `CLASSIFY' target, which enables the user to set
312 the priority of a packet. Some qdiscs can use this value for
313 classification, among these are:
315 atm, cbq, dsmark, pfifo_fast, htb, prio
317 To compile it as a module, choose M here. If unsure, say N.
319 config NETFILTER_XT_TARGET_CONNMARK
320 tristate '"CONNMARK" target support'
321 depends on NF_CONNTRACK
322 depends on NETFILTER_ADVANCED
323 select NF_CONNTRACK_MARK
325 This option adds a `CONNMARK' target, which allows one to manipulate
326 the connection mark value. Similar to the MARK target, but
327 affects the connection mark value rather than the packet mark value.
329 If you want to compile it as a module, say M here and read
330 <file:Documentation/kbuild/modules.txt>. The module will be called
331 ipt_CONNMARK.ko. If unsure, say `N'.
333 config NETFILTER_XT_TARGET_CONNSECMARK
334 tristate '"CONNSECMARK" target support'
335 depends on NF_CONNTRACK && NF_CONNTRACK_SECMARK
336 default m if NETFILTER_ADVANCED=n
338 The CONNSECMARK target copies security markings from packets
339 to connections, and restores security markings from connections
340 to packets (if the packets are not already marked). This would
341 normally be used in conjunction with the SECMARK target.
343 To compile it as a module, choose M here. If unsure, say N.
345 config NETFILTER_XT_TARGET_DSCP
346 tristate '"DSCP" and "TOS" target support'
347 depends on IP_NF_MANGLE || IP6_NF_MANGLE
348 depends on NETFILTER_ADVANCED
350 This option adds a `DSCP' target, which allows you to manipulate
351 the IPv4/IPv6 header DSCP field (differentiated services codepoint).
353 The DSCP field can have any value between 0x0 and 0x3f inclusive.
355 It also adds the "TOS" target, which allows you to create rules in
356 the "mangle" table which alter the Type Of Service field of an IPv4
357 or the Priority field of an IPv6 packet, prior to routing.
359 To compile it as a module, choose M here. If unsure, say N.
361 config NETFILTER_XT_TARGET_MARK
362 tristate '"MARK" target support'
363 default m if NETFILTER_ADVANCED=n
365 This option adds a `MARK' target, which allows you to create rules
366 in the `mangle' table which alter the netfilter mark (nfmark) field
367 associated with the packet prior to routing. This can change
368 the routing method (see `Use netfilter MARK value as routing
369 key') and can also be used by other subsystems to change their
372 To compile it as a module, choose M here. If unsure, say N.
374 config NETFILTER_XT_TARGET_NFLOG
375 tristate '"NFLOG" target support'
376 default m if NETFILTER_ADVANCED=n
378 This option enables the NFLOG target, which allows to LOG
379 messages through the netfilter logging API, which can use
380 either the old LOG target, the old ULOG target or nfnetlink_log
383 To compile it as a module, choose M here. If unsure, say N.
385 config NETFILTER_XT_TARGET_NFQUEUE
386 tristate '"NFQUEUE" target Support'
387 depends on NETFILTER_ADVANCED
389 This target replaced the old obsolete QUEUE target.
391 As opposed to QUEUE, it supports 65535 different queues,
394 To compile it as a module, choose M here. If unsure, say N.
396 config NETFILTER_XT_TARGET_NOTRACK
397 tristate '"NOTRACK" target support'
398 depends on IP_NF_RAW || IP6_NF_RAW
399 depends on NF_CONNTRACK
400 depends on NETFILTER_ADVANCED
402 The NOTRACK target allows a select rule to specify
403 which packets *not* to enter the conntrack/NAT
404 subsystem with all the consequences (no ICMP error tracking,
405 no protocol helpers for the selected packets).
407 If you want to compile it as a module, say M here and read
408 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
410 config NETFILTER_XT_TARGET_RATEEST
411 tristate '"RATEEST" target support'
412 depends on NETFILTER_ADVANCED
414 This option adds a `RATEEST' target, which allows to measure
415 rates similar to TC estimators. The `rateest' match can be
416 used to match on the measured rates.
418 To compile it as a module, choose M here. If unsure, say N.
420 config NETFILTER_XT_TARGET_TPROXY
421 tristate '"TPROXY" target support (EXPERIMENTAL)'
422 depends on EXPERIMENTAL
423 depends on NETFILTER_TPROXY
424 depends on NETFILTER_XTABLES
425 depends on NETFILTER_ADVANCED
426 select NF_DEFRAG_IPV4
428 This option adds a `TPROXY' target, which is somewhat similar to
429 REDIRECT. It can only be used in the mangle table and is useful
430 to redirect traffic to a transparent proxy. It does _not_ depend
431 on Netfilter connection tracking and NAT, unlike REDIRECT.
433 To compile it as a module, choose M here. If unsure, say N.
435 config NETFILTER_XT_TARGET_TRACE
436 tristate '"TRACE" target support'
437 depends on IP_NF_RAW || IP6_NF_RAW
438 depends on NETFILTER_ADVANCED
440 The TRACE target allows you to mark packets so that the kernel
441 will log every rule which match the packets as those traverse
442 the tables, chains, rules.
444 If you want to compile it as a module, say M here and read
445 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
447 config NETFILTER_XT_TARGET_SECMARK
448 tristate '"SECMARK" target support'
449 depends on NETWORK_SECMARK
450 default m if NETFILTER_ADVANCED=n
452 The SECMARK target allows security marking of network
453 packets, for use with security subsystems.
455 To compile it as a module, choose M here. If unsure, say N.
457 config NETFILTER_XT_TARGET_TCPMSS
458 tristate '"TCPMSS" target support'
459 depends on (IPV6 || IPV6=n)
460 default m if NETFILTER_ADVANCED=n
462 This option adds a `TCPMSS' target, which allows you to alter the
463 MSS value of TCP SYN packets, to control the maximum size for that
464 connection (usually limiting it to your outgoing interface's MTU
467 This is used to overcome criminally braindead ISPs or servers which
468 block ICMP Fragmentation Needed packets. The symptoms of this
469 problem are that everything works fine from your Linux
470 firewall/router, but machines behind it can never exchange large
472 1) Web browsers connect, then hang with no data received.
473 2) Small mail works fine, but large emails hang.
474 3) ssh works fine, but scp hangs after initial handshaking.
476 Workaround: activate this option and add a rule to your firewall
479 iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
480 -j TCPMSS --clamp-mss-to-pmtu
482 To compile it as a module, choose M here. If unsure, say N.
484 config NETFILTER_XT_TARGET_TCPOPTSTRIP
485 tristate '"TCPOPTSTRIP" target support (EXPERIMENTAL)'
486 depends on EXPERIMENTAL
487 depends on IP_NF_MANGLE || IP6_NF_MANGLE
488 depends on NETFILTER_ADVANCED
490 This option adds a "TCPOPTSTRIP" target, which allows you to strip
491 TCP options from TCP packets.
493 config NETFILTER_XT_MATCH_COMMENT
494 tristate '"comment" match support'
495 depends on NETFILTER_ADVANCED
497 This option adds a `comment' dummy-match, which allows you to put
498 comments in your iptables ruleset.
500 If you want to compile it as a module, say M here and read
501 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
503 config NETFILTER_XT_MATCH_CONNBYTES
504 tristate '"connbytes" per-connection counter match support'
505 depends on NF_CONNTRACK
506 depends on NETFILTER_ADVANCED
509 This option adds a `connbytes' match, which allows you to match the
510 number of bytes and/or packets for each direction within a connection.
512 If you want to compile it as a module, say M here and read
513 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
515 config NETFILTER_XT_MATCH_CONNLIMIT
516 tristate '"connlimit" match support"'
517 depends on NF_CONNTRACK
518 depends on NETFILTER_ADVANCED
520 This match allows you to match against the number of parallel
521 connections to a server per client IP address (or address block).
523 config NETFILTER_XT_MATCH_CONNMARK
524 tristate '"connmark" connection mark match support'
525 depends on NF_CONNTRACK
526 depends on NETFILTER_ADVANCED
527 select NF_CONNTRACK_MARK
529 This option adds a `connmark' match, which allows you to match the
530 connection mark value previously set for the session by `CONNMARK'.
532 If you want to compile it as a module, say M here and read
533 <file:Documentation/kbuild/modules.txt>. The module will be called
534 ipt_connmark.ko. If unsure, say `N'.
536 config NETFILTER_XT_MATCH_CONNTRACK
537 tristate '"conntrack" connection tracking match support'
538 depends on NF_CONNTRACK
539 default m if NETFILTER_ADVANCED=n
541 This is a general conntrack match module, a superset of the state match.
543 It allows matching on additional conntrack information, which is
544 useful in complex configurations, such as NAT gateways with multiple
545 internet links or tunnels.
547 To compile it as a module, choose M here. If unsure, say N.
549 config NETFILTER_XT_MATCH_DCCP
550 tristate '"dccp" protocol match support'
551 depends on NETFILTER_ADVANCED
554 With this option enabled, you will be able to use the iptables
555 `dccp' match in order to match on DCCP source/destination ports
558 If you want to compile it as a module, say M here and read
559 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
561 config NETFILTER_XT_MATCH_DSCP
562 tristate '"dscp" and "tos" match support'
563 depends on NETFILTER_ADVANCED
565 This option adds a `DSCP' match, which allows you to match against
566 the IPv4/IPv6 header DSCP field (differentiated services codepoint).
568 The DSCP field can have any value between 0x0 and 0x3f inclusive.
570 It will also add a "tos" match, which allows you to match packets
571 based on the Type Of Service fields of the IPv4 packet (which share
572 the same bits as DSCP).
574 To compile it as a module, choose M here. If unsure, say N.
576 config NETFILTER_XT_MATCH_ESP
577 tristate '"esp" match support'
578 depends on NETFILTER_ADVANCED
580 This match extension allows you to match a range of SPIs
581 inside ESP header of IPSec packets.
583 To compile it as a module, choose M here. If unsure, say N.
585 config NETFILTER_XT_MATCH_HASHLIMIT
586 tristate '"hashlimit" match support'
587 depends on (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n)
588 depends on NETFILTER_ADVANCED
590 This option adds a `hashlimit' match.
592 As opposed to `limit', this match dynamically creates a hash table
593 of limit buckets, based on your selection of source/destination
594 addresses and/or ports.
596 It enables you to express policies like `10kpps for any given
597 destination address' or `500pps from any given source address'
600 config NETFILTER_XT_MATCH_HELPER
601 tristate '"helper" match support'
602 depends on NF_CONNTRACK
603 depends on NETFILTER_ADVANCED
605 Helper matching allows you to match packets in dynamic connections
606 tracked by a conntrack-helper, ie. ip_conntrack_ftp
608 To compile it as a module, choose M here. If unsure, say Y.
610 config NETFILTER_XT_MATCH_IPRANGE
611 tristate '"iprange" address range match support'
612 depends on NETFILTER_ADVANCED
614 This option adds a "iprange" match, which allows you to match based on
615 an IP address range. (Normal iptables only matches on single addresses
616 with an optional mask.)
620 config NETFILTER_XT_MATCH_LENGTH
621 tristate '"length" match support'
622 depends on NETFILTER_ADVANCED
624 This option allows you to match the length of a packet against a
625 specific value or range of values.
627 To compile it as a module, choose M here. If unsure, say N.
629 config NETFILTER_XT_MATCH_LIMIT
630 tristate '"limit" match support'
631 depends on NETFILTER_ADVANCED
633 limit matching allows you to control the rate at which a rule can be
634 matched: mainly useful in combination with the LOG target ("LOG
635 target support", below) and to avoid some Denial of Service attacks.
637 To compile it as a module, choose M here. If unsure, say N.
639 config NETFILTER_XT_MATCH_MAC
640 tristate '"mac" address match support'
641 depends on NETFILTER_ADVANCED
643 MAC matching allows you to match packets based on the source
644 Ethernet address of the packet.
646 To compile it as a module, choose M here. If unsure, say N.
648 config NETFILTER_XT_MATCH_MARK
649 tristate '"mark" match support'
650 default m if NETFILTER_ADVANCED=n
652 Netfilter mark matching allows you to match packets based on the
653 `nfmark' value in the packet. This can be set by the MARK target
656 To compile it as a module, choose M here. If unsure, say N.
658 config NETFILTER_XT_MATCH_MULTIPORT
659 tristate '"multiport" Multiple port match support'
660 depends on NETFILTER_ADVANCED
662 Multiport matching allows you to match TCP or UDP packets based on
663 a series of source or destination ports: normally a rule can only
664 match a single range of ports.
666 To compile it as a module, choose M here. If unsure, say N.
668 config NETFILTER_XT_MATCH_OWNER
669 tristate '"owner" match support'
670 depends on NETFILTER_ADVANCED
672 Socket owner matching allows you to match locally-generated packets
673 based on who created the socket: the user or group. It is also
674 possible to check whether a socket actually exists.
676 config NETFILTER_XT_MATCH_POLICY
677 tristate 'IPsec "policy" match support'
679 default m if NETFILTER_ADVANCED=n
681 Policy matching allows you to match packets based on the
682 IPsec policy that was used during decapsulation/will
683 be used during encapsulation.
685 To compile it as a module, choose M here. If unsure, say N.
687 config NETFILTER_XT_MATCH_PHYSDEV
688 tristate '"physdev" match support'
689 depends on BRIDGE && BRIDGE_NETFILTER
690 depends on NETFILTER_ADVANCED
692 Physdev packet matching matches against the physical bridge ports
693 the IP packet arrived on or will leave by.
695 To compile it as a module, choose M here. If unsure, say N.
697 config NETFILTER_XT_MATCH_PKTTYPE
698 tristate '"pkttype" packet type match support'
699 depends on NETFILTER_ADVANCED
701 Packet type matching allows you to match a packet by
702 its "class", eg. BROADCAST, MULTICAST, ...
705 iptables -A INPUT -m pkttype --pkt-type broadcast -j LOG
707 To compile it as a module, choose M here. If unsure, say N.
709 config NETFILTER_XT_MATCH_QUOTA
710 tristate '"quota" match support'
711 depends on NETFILTER_ADVANCED
713 This option adds a `quota' match, which allows to match on a
716 If you want to compile it as a module, say M here and read
717 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
719 config NETFILTER_XT_MATCH_RATEEST
720 tristate '"rateest" match support'
721 depends on NETFILTER_ADVANCED
722 select NETFILTER_XT_TARGET_RATEEST
724 This option adds a `rateest' match, which allows to match on the
725 rate estimated by the RATEEST target.
727 To compile it as a module, choose M here. If unsure, say N.
729 config NETFILTER_XT_MATCH_REALM
730 tristate '"realm" match support'
731 depends on NETFILTER_ADVANCED
734 This option adds a `realm' match, which allows you to use the realm
735 key from the routing subsystem inside iptables.
737 This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option
740 If you want to compile it as a module, say M here and read
741 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
743 config NETFILTER_XT_MATCH_RECENT
744 tristate '"recent" match support'
745 depends on NETFILTER_ADVANCED
747 This match is used for creating one or many lists of recently
748 used addresses and then matching against that/those list(s).
750 Short options are available by using 'iptables -m recent -h'
751 Official Website: <http://snowman.net/projects/ipt_recent/>
753 config NETFILTER_XT_MATCH_RECENT_PROC_COMPAT
754 bool 'Enable obsolete /proc/net/ipt_recent'
755 depends on NETFILTER_XT_MATCH_RECENT && PROC_FS
757 This option enables the old /proc/net/ipt_recent interface,
758 which has been obsoleted by /proc/net/xt_recent.
760 config NETFILTER_XT_MATCH_SCTP
761 tristate '"sctp" protocol match support (EXPERIMENTAL)'
762 depends on EXPERIMENTAL
763 depends on NETFILTER_ADVANCED
766 With this option enabled, you will be able to use the
767 `sctp' match in order to match on SCTP source/destination ports
768 and SCTP chunk types.
770 If you want to compile it as a module, say M here and read
771 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
773 config NETFILTER_XT_MATCH_SOCKET
774 tristate '"socket" match support (EXPERIMENTAL)'
775 depends on EXPERIMENTAL
776 depends on NETFILTER_TPROXY
777 depends on NETFILTER_XTABLES
778 depends on NETFILTER_ADVANCED
779 select NF_DEFRAG_IPV4
781 This option adds a `socket' match, which can be used to match
782 packets for which a TCP or UDP socket lookup finds a valid socket.
783 It can be used in combination with the MARK target and policy
784 routing to implement full featured non-locally bound sockets.
786 To compile it as a module, choose M here. If unsure, say N.
788 config NETFILTER_XT_MATCH_STATE
789 tristate '"state" match support'
790 depends on NF_CONNTRACK
791 default m if NETFILTER_ADVANCED=n
793 Connection state matching allows you to match packets based on their
794 relationship to a tracked connection (ie. previous packets). This
795 is a powerful tool for packet classification.
797 To compile it as a module, choose M here. If unsure, say N.
799 config NETFILTER_XT_MATCH_STATISTIC
800 tristate '"statistic" match support'
801 depends on NETFILTER_ADVANCED
803 This option adds a `statistic' match, which allows you to match
804 on packets periodically or randomly with a given percentage.
806 To compile it as a module, choose M here. If unsure, say N.
808 config NETFILTER_XT_MATCH_STRING
809 tristate '"string" match support'
810 depends on NETFILTER_ADVANCED
812 select TEXTSEARCH_KMP
814 select TEXTSEARCH_FSM
816 This option adds a `string' match, which allows you to look for
817 pattern matchings in packets.
819 To compile it as a module, choose M here. If unsure, say N.
821 config NETFILTER_XT_MATCH_TCPMSS
822 tristate '"tcpmss" match support'
823 depends on NETFILTER_ADVANCED
825 This option adds a `tcpmss' match, which allows you to examine the
826 MSS value of TCP SYN packets, which control the maximum packet size
829 To compile it as a module, choose M here. If unsure, say N.
831 config NETFILTER_XT_MATCH_TIME
832 tristate '"time" match support'
833 depends on NETFILTER_ADVANCED
835 This option adds a "time" match, which allows you to match based on
836 the packet arrival time (at the machine which netfilter is running)
837 on) or departure time/date (for locally generated packets).
839 If you say Y here, try `iptables -m time --help` for
842 If you want to compile it as a module, say M here.
845 config NETFILTER_XT_MATCH_U32
846 tristate '"u32" match support'
847 depends on NETFILTER_ADVANCED
849 u32 allows you to extract quantities of up to 4 bytes from a packet,
850 AND them with specified masks, shift them by specified amounts and
851 test whether the results are in any of a set of specified ranges.
852 The specification of what to extract is general enough to skip over
853 headers with lengths stored in the packet, as in IP or TCP header
856 Details and examples are in the kernel module source.
858 endif # NETFILTER_XTABLES
862 source "net/netfilter/ipvs/Kconfig"