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 default m if NETFILTER_ADVANCED=n
276 This option enables support for a netlink-based userspace interface
278 # transparent proxy support
279 config NETFILTER_TPROXY
280 tristate "Transparent proxying support (EXPERIMENTAL)"
281 depends on EXPERIMENTAL
282 depends on IP_NF_MANGLE
283 depends on NETFILTER_ADVANCED
285 This option enables transparent proxying support, that is,
286 support for handling non-locally bound IPv4 TCP and UDP sockets.
287 For it to work you will have to configure certain iptables rules
288 and use policy routing. For more information on how to set it up
289 see Documentation/networking/tproxy.txt.
291 To compile it as a module, choose M here. If unsure, say N.
295 config NETFILTER_XTABLES
296 tristate "Netfilter Xtables support (required for ip_tables)"
297 default m if NETFILTER_ADVANCED=n
299 This is required if you intend to use any of ip_tables,
300 ip6_tables or arp_tables.
304 # alphabetically ordered list of targets
306 config NETFILTER_XT_TARGET_CLASSIFY
307 tristate '"CLASSIFY" target support'
308 depends on NETFILTER_ADVANCED
310 This option adds a `CLASSIFY' target, which enables the user to set
311 the priority of a packet. Some qdiscs can use this value for
312 classification, among these are:
314 atm, cbq, dsmark, pfifo_fast, htb, prio
316 To compile it as a module, choose M here. If unsure, say N.
318 config NETFILTER_XT_TARGET_CONNMARK
319 tristate '"CONNMARK" target support'
320 depends on NF_CONNTRACK
321 depends on NETFILTER_ADVANCED
322 select NF_CONNTRACK_MARK
324 This option adds a `CONNMARK' target, which allows one to manipulate
325 the connection mark value. Similar to the MARK target, but
326 affects the connection mark value rather than the packet mark value.
328 If you want to compile it as a module, say M here and read
329 <file:Documentation/kbuild/modules.txt>. The module will be called
330 ipt_CONNMARK.ko. If unsure, say `N'.
332 config NETFILTER_XT_TARGET_CONNSECMARK
333 tristate '"CONNSECMARK" target support'
334 depends on NF_CONNTRACK && NF_CONNTRACK_SECMARK
335 default m if NETFILTER_ADVANCED=n
337 The CONNSECMARK target copies security markings from packets
338 to connections, and restores security markings from connections
339 to packets (if the packets are not already marked). This would
340 normally be used in conjunction with the SECMARK target.
342 To compile it as a module, choose M here. If unsure, say N.
344 config NETFILTER_XT_TARGET_DSCP
345 tristate '"DSCP" and "TOS" target support'
346 depends on IP_NF_MANGLE || IP6_NF_MANGLE
347 depends on NETFILTER_ADVANCED
349 This option adds a `DSCP' target, which allows you to manipulate
350 the IPv4/IPv6 header DSCP field (differentiated services codepoint).
352 The DSCP field can have any value between 0x0 and 0x3f inclusive.
354 It also adds the "TOS" target, which allows you to create rules in
355 the "mangle" table which alter the Type Of Service field of an IPv4
356 or the Priority field of an IPv6 packet, prior to routing.
358 To compile it as a module, choose M here. If unsure, say N.
360 config NETFILTER_XT_TARGET_HL
361 tristate '"HL" hoplimit target support'
362 depends on IP_NF_MANGLE || IP6_NF_MANGLE
363 depends on NETFILTER_ADVANCED
365 This option adds the "HL" (for IPv6) and "TTL" (for IPv4)
366 targets, which enable the user to change the
367 hoplimit/time-to-live value of the IP header.
369 While it is safe to decrement the hoplimit/TTL value, the
370 modules also allow to increment and set the hoplimit value of
371 the header to arbitrary values. This is EXTREMELY DANGEROUS
372 since you can easily create immortal packets that loop
373 forever on the network.
375 config NETFILTER_XT_TARGET_MARK
376 tristate '"MARK" target support'
377 default m if NETFILTER_ADVANCED=n
379 This option adds a `MARK' target, which allows you to create rules
380 in the `mangle' table which alter the netfilter mark (nfmark) field
381 associated with the packet prior to routing. This can change
382 the routing method (see `Use netfilter MARK value as routing
383 key') and can also be used by other subsystems to change their
386 To compile it as a module, choose M here. If unsure, say N.
388 config NETFILTER_XT_TARGET_NFLOG
389 tristate '"NFLOG" target support'
390 default m if NETFILTER_ADVANCED=n
391 select NETFILTER_NETLINK_LOG
393 This option enables the NFLOG target, which allows to LOG
394 messages through nfnetlink_log.
396 To compile it as a module, choose M here. If unsure, say N.
398 config NETFILTER_XT_TARGET_NFQUEUE
399 tristate '"NFQUEUE" target Support'
400 depends on NETFILTER_ADVANCED
402 This target replaced the old obsolete QUEUE target.
404 As opposed to QUEUE, it supports 65535 different queues,
407 To compile it as a module, choose M here. If unsure, say N.
409 config NETFILTER_XT_TARGET_NOTRACK
410 tristate '"NOTRACK" target support'
411 depends on IP_NF_RAW || IP6_NF_RAW
412 depends on NF_CONNTRACK
413 depends on NETFILTER_ADVANCED
415 The NOTRACK target allows a select rule to specify
416 which packets *not* to enter the conntrack/NAT
417 subsystem with all the consequences (no ICMP error tracking,
418 no protocol helpers for the selected packets).
420 If you want to compile it as a module, say M here and read
421 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
423 config NETFILTER_XT_TARGET_RATEEST
424 tristate '"RATEEST" target support'
425 depends on NETFILTER_ADVANCED
427 This option adds a `RATEEST' target, which allows to measure
428 rates similar to TC estimators. The `rateest' match can be
429 used to match on the measured rates.
431 To compile it as a module, choose M here. If unsure, say N.
433 config NETFILTER_XT_TARGET_TPROXY
434 tristate '"TPROXY" target support (EXPERIMENTAL)'
435 depends on EXPERIMENTAL
436 depends on NETFILTER_TPROXY
437 depends on NETFILTER_XTABLES
438 depends on NETFILTER_ADVANCED
439 select NF_DEFRAG_IPV4
441 This option adds a `TPROXY' target, which is somewhat similar to
442 REDIRECT. It can only be used in the mangle table and is useful
443 to redirect traffic to a transparent proxy. It does _not_ depend
444 on Netfilter connection tracking and NAT, unlike REDIRECT.
446 To compile it as a module, choose M here. If unsure, say N.
448 config NETFILTER_XT_TARGET_TRACE
449 tristate '"TRACE" target support'
450 depends on IP_NF_RAW || IP6_NF_RAW
451 depends on NETFILTER_ADVANCED
453 The TRACE target allows you to mark packets so that the kernel
454 will log every rule which match the packets as those traverse
455 the tables, chains, rules.
457 If you want to compile it as a module, say M here and read
458 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
460 config NETFILTER_XT_TARGET_SECMARK
461 tristate '"SECMARK" target support'
462 depends on NETWORK_SECMARK
463 default m if NETFILTER_ADVANCED=n
465 The SECMARK target allows security marking of network
466 packets, for use with security subsystems.
468 To compile it as a module, choose M here. If unsure, say N.
470 config NETFILTER_XT_TARGET_TCPMSS
471 tristate '"TCPMSS" target support'
472 depends on (IPV6 || IPV6=n)
473 default m if NETFILTER_ADVANCED=n
475 This option adds a `TCPMSS' target, which allows you to alter the
476 MSS value of TCP SYN packets, to control the maximum size for that
477 connection (usually limiting it to your outgoing interface's MTU
480 This is used to overcome criminally braindead ISPs or servers which
481 block ICMP Fragmentation Needed packets. The symptoms of this
482 problem are that everything works fine from your Linux
483 firewall/router, but machines behind it can never exchange large
485 1) Web browsers connect, then hang with no data received.
486 2) Small mail works fine, but large emails hang.
487 3) ssh works fine, but scp hangs after initial handshaking.
489 Workaround: activate this option and add a rule to your firewall
492 iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
493 -j TCPMSS --clamp-mss-to-pmtu
495 To compile it as a module, choose M here. If unsure, say N.
497 config NETFILTER_XT_TARGET_TCPOPTSTRIP
498 tristate '"TCPOPTSTRIP" target support (EXPERIMENTAL)'
499 depends on EXPERIMENTAL
500 depends on IP_NF_MANGLE || IP6_NF_MANGLE
501 depends on NETFILTER_ADVANCED
503 This option adds a "TCPOPTSTRIP" target, which allows you to strip
504 TCP options from TCP packets.
506 config NETFILTER_XT_MATCH_COMMENT
507 tristate '"comment" match support'
508 depends on NETFILTER_ADVANCED
510 This option adds a `comment' dummy-match, which allows you to put
511 comments in your iptables ruleset.
513 If you want to compile it as a module, say M here and read
514 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
516 config NETFILTER_XT_MATCH_CONNBYTES
517 tristate '"connbytes" per-connection counter match support'
518 depends on NF_CONNTRACK
519 depends on NETFILTER_ADVANCED
522 This option adds a `connbytes' match, which allows you to match the
523 number of bytes and/or packets for each direction within a connection.
525 If you want to compile it as a module, say M here and read
526 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
528 config NETFILTER_XT_MATCH_CONNLIMIT
529 tristate '"connlimit" match support"'
530 depends on NF_CONNTRACK
531 depends on NETFILTER_ADVANCED
533 This match allows you to match against the number of parallel
534 connections to a server per client IP address (or address block).
536 config NETFILTER_XT_MATCH_CONNMARK
537 tristate '"connmark" connection mark match support'
538 depends on NF_CONNTRACK
539 depends on NETFILTER_ADVANCED
540 select NF_CONNTRACK_MARK
542 This option adds a `connmark' match, which allows you to match the
543 connection mark value previously set for the session by `CONNMARK'.
545 If you want to compile it as a module, say M here and read
546 <file:Documentation/kbuild/modules.txt>. The module will be called
547 ipt_connmark.ko. If unsure, say `N'.
549 config NETFILTER_XT_MATCH_CONNTRACK
550 tristate '"conntrack" connection tracking match support'
551 depends on NF_CONNTRACK
552 default m if NETFILTER_ADVANCED=n
554 This is a general conntrack match module, a superset of the state match.
556 It allows matching on additional conntrack information, which is
557 useful in complex configurations, such as NAT gateways with multiple
558 internet links or tunnels.
560 To compile it as a module, choose M here. If unsure, say N.
562 config NETFILTER_XT_MATCH_DCCP
563 tristate '"dccp" protocol match support'
564 depends on NETFILTER_ADVANCED
567 With this option enabled, you will be able to use the iptables
568 `dccp' match in order to match on DCCP source/destination ports
571 If you want to compile it as a module, say M here and read
572 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
574 config NETFILTER_XT_MATCH_DSCP
575 tristate '"dscp" and "tos" match support'
576 depends on NETFILTER_ADVANCED
578 This option adds a `DSCP' match, which allows you to match against
579 the IPv4/IPv6 header DSCP field (differentiated services codepoint).
581 The DSCP field can have any value between 0x0 and 0x3f inclusive.
583 It will also add a "tos" match, which allows you to match packets
584 based on the Type Of Service fields of the IPv4 packet (which share
585 the same bits as DSCP).
587 To compile it as a module, choose M here. If unsure, say N.
589 config NETFILTER_XT_MATCH_ESP
590 tristate '"esp" match support'
591 depends on NETFILTER_ADVANCED
593 This match extension allows you to match a range of SPIs
594 inside ESP header of IPSec packets.
596 To compile it as a module, choose M here. If unsure, say N.
598 config NETFILTER_XT_MATCH_HASHLIMIT
599 tristate '"hashlimit" match support'
600 depends on (IP6_NF_IPTABLES || IP6_NF_IPTABLES=n)
601 depends on NETFILTER_ADVANCED
603 This option adds a `hashlimit' match.
605 As opposed to `limit', this match dynamically creates a hash table
606 of limit buckets, based on your selection of source/destination
607 addresses and/or ports.
609 It enables you to express policies like `10kpps for any given
610 destination address' or `500pps from any given source address'
613 config NETFILTER_XT_MATCH_HELPER
614 tristate '"helper" match support'
615 depends on NF_CONNTRACK
616 depends on NETFILTER_ADVANCED
618 Helper matching allows you to match packets in dynamic connections
619 tracked by a conntrack-helper, ie. ip_conntrack_ftp
621 To compile it as a module, choose M here. If unsure, say Y.
623 config NETFILTER_XT_MATCH_IPRANGE
624 tristate '"iprange" address range match support'
625 depends on NETFILTER_ADVANCED
627 This option adds a "iprange" match, which allows you to match based on
628 an IP address range. (Normal iptables only matches on single addresses
629 with an optional mask.)
633 config NETFILTER_XT_MATCH_LENGTH
634 tristate '"length" match support'
635 depends on NETFILTER_ADVANCED
637 This option allows you to match the length of a packet against a
638 specific value or range of values.
640 To compile it as a module, choose M here. If unsure, say N.
642 config NETFILTER_XT_MATCH_LIMIT
643 tristate '"limit" match support'
644 depends on NETFILTER_ADVANCED
646 limit matching allows you to control the rate at which a rule can be
647 matched: mainly useful in combination with the LOG target ("LOG
648 target support", below) and to avoid some Denial of Service attacks.
650 To compile it as a module, choose M here. If unsure, say N.
652 config NETFILTER_XT_MATCH_MAC
653 tristate '"mac" address match support'
654 depends on NETFILTER_ADVANCED
656 MAC matching allows you to match packets based on the source
657 Ethernet address of the packet.
659 To compile it as a module, choose M here. If unsure, say N.
661 config NETFILTER_XT_MATCH_MARK
662 tristate '"mark" match support'
663 default m if NETFILTER_ADVANCED=n
665 Netfilter mark matching allows you to match packets based on the
666 `nfmark' value in the packet. This can be set by the MARK target
669 To compile it as a module, choose M here. If unsure, say N.
671 config NETFILTER_XT_MATCH_MULTIPORT
672 tristate '"multiport" Multiple port match support'
673 depends on NETFILTER_ADVANCED
675 Multiport matching allows you to match TCP or UDP packets based on
676 a series of source or destination ports: normally a rule can only
677 match a single range of ports.
679 To compile it as a module, choose M here. If unsure, say N.
681 config NETFILTER_XT_MATCH_OWNER
682 tristate '"owner" match support'
683 depends on NETFILTER_ADVANCED
685 Socket owner matching allows you to match locally-generated packets
686 based on who created the socket: the user or group. It is also
687 possible to check whether a socket actually exists.
689 config NETFILTER_XT_MATCH_POLICY
690 tristate 'IPsec "policy" match support'
692 default m if NETFILTER_ADVANCED=n
694 Policy matching allows you to match packets based on the
695 IPsec policy that was used during decapsulation/will
696 be used during encapsulation.
698 To compile it as a module, choose M here. If unsure, say N.
700 config NETFILTER_XT_MATCH_PHYSDEV
701 tristate '"physdev" match support'
702 depends on BRIDGE && BRIDGE_NETFILTER
703 depends on NETFILTER_ADVANCED
705 Physdev packet matching matches against the physical bridge ports
706 the IP packet arrived on or will leave by.
708 To compile it as a module, choose M here. If unsure, say N.
710 config NETFILTER_XT_MATCH_PKTTYPE
711 tristate '"pkttype" packet type match support'
712 depends on NETFILTER_ADVANCED
714 Packet type matching allows you to match a packet by
715 its "class", eg. BROADCAST, MULTICAST, ...
718 iptables -A INPUT -m pkttype --pkt-type broadcast -j LOG
720 To compile it as a module, choose M here. If unsure, say N.
722 config NETFILTER_XT_MATCH_QUOTA
723 tristate '"quota" match support'
724 depends on NETFILTER_ADVANCED
726 This option adds a `quota' match, which allows to match on a
729 If you want to compile it as a module, say M here and read
730 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
732 config NETFILTER_XT_MATCH_RATEEST
733 tristate '"rateest" match support'
734 depends on NETFILTER_ADVANCED
735 select NETFILTER_XT_TARGET_RATEEST
737 This option adds a `rateest' match, which allows to match on the
738 rate estimated by the RATEEST target.
740 To compile it as a module, choose M here. If unsure, say N.
742 config NETFILTER_XT_MATCH_REALM
743 tristate '"realm" match support'
744 depends on NETFILTER_ADVANCED
747 This option adds a `realm' match, which allows you to use the realm
748 key from the routing subsystem inside iptables.
750 This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option
753 If you want to compile it as a module, say M here and read
754 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
756 config NETFILTER_XT_MATCH_RECENT
757 tristate '"recent" match support'
758 depends on NETFILTER_ADVANCED
760 This match is used for creating one or many lists of recently
761 used addresses and then matching against that/those list(s).
763 Short options are available by using 'iptables -m recent -h'
764 Official Website: <http://snowman.net/projects/ipt_recent/>
766 config NETFILTER_XT_MATCH_RECENT_PROC_COMPAT
767 bool 'Enable obsolete /proc/net/ipt_recent'
768 depends on NETFILTER_XT_MATCH_RECENT && PROC_FS
770 This option enables the old /proc/net/ipt_recent interface,
771 which has been obsoleted by /proc/net/xt_recent.
773 config NETFILTER_XT_MATCH_SCTP
774 tristate '"sctp" protocol match support (EXPERIMENTAL)'
775 depends on EXPERIMENTAL
776 depends on NETFILTER_ADVANCED
779 With this option enabled, you will be able to use the
780 `sctp' match in order to match on SCTP source/destination ports
781 and SCTP chunk types.
783 If you want to compile it as a module, say M here and read
784 <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
786 config NETFILTER_XT_MATCH_SOCKET
787 tristate '"socket" match support (EXPERIMENTAL)'
788 depends on EXPERIMENTAL
789 depends on NETFILTER_TPROXY
790 depends on NETFILTER_XTABLES
791 depends on NETFILTER_ADVANCED
792 select NF_DEFRAG_IPV4
794 This option adds a `socket' match, which can be used to match
795 packets for which a TCP or UDP socket lookup finds a valid socket.
796 It can be used in combination with the MARK target and policy
797 routing to implement full featured non-locally bound sockets.
799 To compile it as a module, choose M here. If unsure, say N.
801 config NETFILTER_XT_MATCH_STATE
802 tristate '"state" match support'
803 depends on NF_CONNTRACK
804 default m if NETFILTER_ADVANCED=n
806 Connection state matching allows you to match packets based on their
807 relationship to a tracked connection (ie. previous packets). This
808 is a powerful tool for packet classification.
810 To compile it as a module, choose M here. If unsure, say N.
812 config NETFILTER_XT_MATCH_STATISTIC
813 tristate '"statistic" match support'
814 depends on NETFILTER_ADVANCED
816 This option adds a `statistic' match, which allows you to match
817 on packets periodically or randomly with a given percentage.
819 To compile it as a module, choose M here. If unsure, say N.
821 config NETFILTER_XT_MATCH_STRING
822 tristate '"string" match support'
823 depends on NETFILTER_ADVANCED
825 select TEXTSEARCH_KMP
827 select TEXTSEARCH_FSM
829 This option adds a `string' match, which allows you to look for
830 pattern matchings in packets.
832 To compile it as a module, choose M here. If unsure, say N.
834 config NETFILTER_XT_MATCH_TCPMSS
835 tristate '"tcpmss" match support'
836 depends on NETFILTER_ADVANCED
838 This option adds a `tcpmss' match, which allows you to examine the
839 MSS value of TCP SYN packets, which control the maximum packet size
842 To compile it as a module, choose M here. If unsure, say N.
844 config NETFILTER_XT_MATCH_TIME
845 tristate '"time" match support'
846 depends on NETFILTER_ADVANCED
848 This option adds a "time" match, which allows you to match based on
849 the packet arrival time (at the machine which netfilter is running)
850 on) or departure time/date (for locally generated packets).
852 If you say Y here, try `iptables -m time --help` for
855 If you want to compile it as a module, say M here.
858 config NETFILTER_XT_MATCH_U32
859 tristate '"u32" match support'
860 depends on NETFILTER_ADVANCED
862 u32 allows you to extract quantities of up to 4 bytes from a packet,
863 AND them with specified masks, shift them by specified amounts and
864 test whether the results are in any of a set of specified ranges.
865 The specification of what to extract is general enough to skip over
866 headers with lengths stored in the packet, as in IP or TCP header
869 Details and examples are in the kernel module source.
871 endif # NETFILTER_XTABLES
875 source "net/netfilter/ipvs/Kconfig"