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menu "Core Netfilter Configuration"
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	depends on NET && INET && NETFILTER
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config NETFILTER_INGRESS
	bool "Netfilter ingress support"
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	default y
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	select NET_INGRESS
	help
	  This allows you to classify packets from ingress using the Netfilter
	  infrastructure.

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config NETFILTER_NETLINK
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	tristate
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config NETFILTER_FAMILY_BRIDGE
	bool

config NETFILTER_FAMILY_ARP
	bool

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config NETFILTER_NETLINK_ACCT
tristate "Netfilter NFACCT over NFNETLINK interface"
	depends on NETFILTER_ADVANCED
	select NETFILTER_NETLINK
	help
	  If this option is enabled, the kernel will include support
	  for extended accounting via NFNETLINK.

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config NETFILTER_NETLINK_QUEUE
	tristate "Netfilter NFQUEUE over NFNETLINK interface"
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	depends on NETFILTER_ADVANCED
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	select NETFILTER_NETLINK
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	help
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	  If this option is enabled, the kernel will include support
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	  for queueing packets via NFNETLINK.
	  
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config NETFILTER_NETLINK_LOG
	tristate "Netfilter LOG over NFNETLINK interface"
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	default m if NETFILTER_ADVANCED=n
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	select NETFILTER_NETLINK
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	help
	  If this option is enabled, the kernel will include support
	  for logging packets via NFNETLINK.

	  This obsoletes the existing ipt_ULOG and ebg_ulog mechanisms,
	  and is also scheduled to replace the old syslog-based ipt_LOG
	  and ip6t_LOG modules.

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config NETFILTER_NETLINK_OSF
	tristate "Netfilter OSF over NFNETLINK interface"
	depends on NETFILTER_ADVANCED
	select NETFILTER_NETLINK
	help
	  If this option is enabled, the kernel will include support
	  for passive OS fingerprint via NFNETLINK.

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config NF_CONNTRACK
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	tristate "Netfilter connection tracking support"
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	default m if NETFILTER_ADVANCED=n
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	select NF_DEFRAG_IPV4
	select NF_DEFRAG_IPV6 if IPV6 != n
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	help
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	  Connection tracking keeps a record of what packets have passed
	  through your machine, in order to figure out how they are related
	  into connections.

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	  This is required to do Masquerading or other kinds of Network
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	  Address Translation.  It can also be used to enhance packet
	  filtering (see `Connection state match support' below).
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	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_LOG_COMMON
	tristate

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config NF_LOG_NETDEV
	tristate "Netdev packet logging"
	select NF_LOG_COMMON

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if NF_CONNTRACK
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config NETFILTER_CONNCOUNT
	tristate
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config NF_CONNTRACK_MARK
	bool  'Connection mark tracking support'
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	depends on NETFILTER_ADVANCED
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	help
	  This option enables support for connection marks, used by the
	  `CONNMARK' target and `connmark' match. Similar to the mark value
	  of packets, but this mark value is kept in the conntrack session
	  instead of the individual packets.

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config NF_CONNTRACK_SECMARK
	bool  'Connection tracking security mark support'
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	depends on NETWORK_SECMARK
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	default m if NETFILTER_ADVANCED=n
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	help
	  This option enables security markings to be applied to
	  connections.  Typically they are copied to connections from
	  packets using the CONNSECMARK target and copied back from
	  connections to packets with the same target, with the packets
	  being originally labeled via SECMARK.

	  If unsure, say 'N'.

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config NF_CONNTRACK_ZONES
	bool  'Connection tracking zones'
	depends on NETFILTER_ADVANCED
	help
	  This option enables support for connection tracking zones.
	  Normally, each connection needs to have a unique system wide
	  identity. Connection tracking zones allow to have multiple
	  connections using the same identity, as long as they are
	  contained in different zones.

	  If unsure, say `N'.

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config NF_CONNTRACK_PROCFS
	bool "Supply CT list in procfs (OBSOLETE)"
	default y
	depends on PROC_FS
	---help---
	This option enables for the list of known conntrack entries
	to be shown in procfs under net/netfilter/nf_conntrack. This
	is considered obsolete in favor of using the conntrack(8)
	tool which uses Netlink.

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config NF_CONNTRACK_EVENTS
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	bool "Connection tracking events"
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	depends on NETFILTER_ADVANCED
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	help
	  If this option is enabled, the connection tracking code will
	  provide a notifier chain that can be used by other kernel code
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	  to get notified about changes in the connection tracking state.
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	  If unsure, say `N'.

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config NF_CONNTRACK_TIMEOUT
	bool  'Connection tracking timeout'
	depends on NETFILTER_ADVANCED
	help
	  This option enables support for connection tracking timeout
	  extension. This allows you to attach timeout policies to flow
	  via the CT target.

	  If unsure, say `N'.

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config NF_CONNTRACK_TIMESTAMP
	bool  'Connection tracking timestamping'
	depends on NETFILTER_ADVANCED
	help
	  This option enables support for connection tracking timestamping.
	  This allows you to store the flow start-time and to obtain
	  the flow-stop time (once it has been destroyed) via Connection
	  tracking events.

	  If unsure, say `N'.

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config NF_CONNTRACK_LABELS
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	bool "Connection tracking labels"
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	help
	  This option enables support for assigning user-defined flag bits
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	  to connection tracking entries.  It can be used with xtables connlabel
	  match and the nftables ct expression.
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config NF_CT_PROTO_DCCP
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	bool 'DCCP protocol connection tracking support'
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	depends on NETFILTER_ADVANCED
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	default y
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	help
	  With this option enabled, the layer 3 independent connection
	  tracking code will be able to do state tracking on DCCP connections.

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	  If unsure, say Y.
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config NF_CT_PROTO_GRE
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	bool
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config NF_CT_PROTO_SCTP
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	bool 'SCTP protocol connection tracking support'
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	depends on NETFILTER_ADVANCED
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	default y
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	select LIBCRC32C
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	help
	  With this option enabled, the layer 3 independent connection
	  tracking code will be able to do state tracking on SCTP connections.

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	  If unsure, say Y.
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config NF_CT_PROTO_UDPLITE
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	bool 'UDP-Lite protocol connection tracking support'
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	depends on NETFILTER_ADVANCED
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	default y
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	help
	  With this option enabled, the layer 3 independent connection
	  tracking code will be able to do state tracking on UDP-Lite
	  connections.

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	  If unsure, say Y.
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config NF_CONNTRACK_AMANDA
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	tristate "Amanda backup protocol support"
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	depends on NETFILTER_ADVANCED
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	select TEXTSEARCH
	select TEXTSEARCH_KMP
	help
	  If you are running the Amanda backup package <http://www.amanda.org/>
	  on this machine or machines that will be MASQUERADED through this
	  machine, then you may want to enable this feature.  This allows the
	  connection tracking and natting code to allow the sub-channels that
	  Amanda requires for communication of the backup data, messages and
	  index.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_FTP
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	tristate "FTP protocol support"
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	default m if NETFILTER_ADVANCED=n
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	help
	  Tracking FTP connections is problematic: special helpers are
	  required for tracking them, and doing masquerading and other forms
	  of Network Address Translation on them.

	  This is FTP support on Layer 3 independent connection tracking.
	  Layer 3 independent connection tracking is experimental scheme
	  which generalize ip_conntrack to support other layer 3 protocols.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_H323
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	tristate "H.323 protocol support"
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	depends on IPV6 || IPV6=n
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	depends on NETFILTER_ADVANCED
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	help
	  H.323 is a VoIP signalling protocol from ITU-T. As one of the most
	  important VoIP protocols, it is widely used by voice hardware and
	  software including voice gateways, IP phones, Netmeeting, OpenPhone,
	  Gnomemeeting, etc.

	  With this module you can support H.323 on a connection tracking/NAT
	  firewall.

	  This module supports RAS, Fast Start, H.245 Tunnelling, Call
	  Forwarding, RTP/RTCP and T.120 based audio, video, fax, chat,
	  whiteboard, file transfer, etc. For more information, please
	  visit http://nath323.sourceforge.net/.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_IRC
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	tristate "IRC protocol support"
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	default m if NETFILTER_ADVANCED=n
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	help
	  There is a commonly-used extension to IRC called
	  Direct Client-to-Client Protocol (DCC).  This enables users to send
	  files to each other, and also chat to each other without the need
	  of a server.  DCC Sending is used anywhere you send files over IRC,
	  and DCC Chat is most commonly used by Eggdrop bots.  If you are
	  using NAT, this extension will enable you to send files and initiate
	  chats.  Note that you do NOT need this extension to get files or
	  have others initiate chats, or everything else in IRC.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_BROADCAST
	tristate

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config NF_CONNTRACK_NETBIOS_NS
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	tristate "NetBIOS name service protocol support"
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	select NF_CONNTRACK_BROADCAST
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	help
	  NetBIOS name service requests are sent as broadcast messages from an
	  unprivileged port and responded to with unicast messages to the
	  same port. This make them hard to firewall properly because connection
	  tracking doesn't deal with broadcasts. This helper tracks locally
	  originating NetBIOS name service requests and the corresponding
	  responses. It relies on correct IP address configuration, specifically
	  netmask and broadcast address. When properly configured, the output
	  of "ip address show" should look similar to this:

	  $ ip -4 address show eth0
	  4: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 1000
	      inet 172.16.2.252/24 brd 172.16.2.255 scope global eth0

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_SNMP
	tristate "SNMP service protocol support"
	depends on NETFILTER_ADVANCED
	select NF_CONNTRACK_BROADCAST
	help
	  SNMP service requests are sent as broadcast messages from an
	  unprivileged port and responded to with unicast messages to the
	  same port. This make them hard to firewall properly because connection
	  tracking doesn't deal with broadcasts. This helper tracks locally
	  originating SNMP service requests and the corresponding
	  responses. It relies on correct IP address configuration, specifically
	  netmask and broadcast address.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_PPTP
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	tristate "PPtP protocol support"
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	depends on NETFILTER_ADVANCED
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	select NF_CT_PROTO_GRE
	help
	  This module adds support for PPTP (Point to Point Tunnelling
	  Protocol, RFC2637) connection tracking and NAT.

	  If you are running PPTP sessions over a stateful firewall or NAT
	  box, you may want to enable this feature.

	  Please note that not all PPTP modes of operation are supported yet.
	  Specifically these limitations exist:
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	    - Blindly assumes that control connections are always established
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	      in PNS->PAC direction. This is a violation of RFC2637.
	    - Only supports a single call within each session

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_SANE
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	tristate "SANE protocol support"
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	depends on NETFILTER_ADVANCED
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	help
	  SANE is a protocol for remote access to scanners as implemented
	  by the 'saned' daemon. Like FTP, it uses separate control and
	  data connections.

	  With this module you can support SANE on a connection tracking
	  firewall.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_SIP
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	tristate "SIP protocol support"
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	default m if NETFILTER_ADVANCED=n
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	help
	  SIP is an application-layer control protocol that can establish,
	  modify, and terminate multimedia sessions (conferences) such as
	  Internet telephony calls. With the ip_conntrack_sip and
	  the nf_nat_sip modules you can support the protocol on a connection
	  tracking/NATing firewall.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CONNTRACK_TFTP
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	tristate "TFTP protocol support"
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	depends on NETFILTER_ADVANCED
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	help
	  TFTP connection tracking helper, this is required depending
	  on how restrictive your ruleset is.
	  If you are using a tftp client behind -j SNAT or -j MASQUERADING
	  you will need this.

	  To compile it as a module, choose M here.  If unsure, say N.

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config NF_CT_NETLINK
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	tristate 'Connection tracking netlink interface'
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	select NETFILTER_NETLINK
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	default m if NETFILTER_ADVANCED=n
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	help
	  This option enables support for a netlink-based userspace interface

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config NF_CT_NETLINK_TIMEOUT
	tristate  'Connection tracking timeout tuning via Netlink'
	select NETFILTER_NETLINK
	depends on NETFILTER_ADVANCED
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	depends on NF_CONNTRACK_TIMEOUT
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	help
	  This option enables support for connection tracking timeout
	  fine-grain tuning. This allows you to attach specific timeout
	  policies to flows, instead of using the global timeout policy.

	  If unsure, say `N'.

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config NF_CT_NETLINK_HELPER
	tristate 'Connection tracking helpers in user-space via Netlink'
	select NETFILTER_NETLINK
	depends on NF_CT_NETLINK
	depends on NETFILTER_NETLINK_QUEUE
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	depends on NETFILTER_NETLINK_GLUE_CT
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	depends on NETFILTER_ADVANCED
	help
	  This option enables the user-space connection tracking helpers
	  infrastructure.

	  If unsure, say `N'.

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config NETFILTER_NETLINK_GLUE_CT
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	bool "NFQUEUE and NFLOG integration with Connection Tracking"
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	default n
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	depends on (NETFILTER_NETLINK_QUEUE || NETFILTER_NETLINK_LOG) && NF_CT_NETLINK
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	help
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	  If this option is enabled, NFQUEUE and NFLOG can include
	  Connection Tracking information together with the packet is
	  the enqueued via NFNETLINK.
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config NF_NAT
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	tristate "Network Address Translation support"
	depends on NF_CONNTRACK
	default m if NETFILTER_ADVANCED=n
	help
	  The NAT option allows masquerading, port forwarding and other
	  forms of full Network Address Port Translation. This can be
	  controlled by iptables, ip6tables or nft.
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config NF_NAT_NEEDED
	bool
	depends on NF_NAT
	default y

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config NF_NAT_AMANDA
	tristate
	depends on NF_CONNTRACK && NF_NAT
	default NF_NAT && NF_CONNTRACK_AMANDA

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config NF_NAT_FTP
	tristate
	depends on NF_CONNTRACK && NF_NAT
	default NF_NAT && NF_CONNTRACK_FTP

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config NF_NAT_IRC
	tristate
	depends on NF_CONNTRACK && NF_NAT
	default NF_NAT && NF_CONNTRACK_IRC

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config NF_NAT_SIP
	tristate
	depends on NF_CONNTRACK && NF_NAT
	default NF_NAT && NF_CONNTRACK_SIP

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config NF_NAT_TFTP
	tristate
	depends on NF_CONNTRACK && NF_NAT
	default NF_NAT && NF_CONNTRACK_TFTP

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config NF_NAT_REDIRECT
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	bool
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config NF_NAT_MASQUERADE
	bool

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config NETFILTER_SYNPROXY
	tristate

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endif # NF_CONNTRACK

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config NF_TABLES
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	select NETFILTER_NETLINK
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	tristate "Netfilter nf_tables support"
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	help
	  nftables is the new packet classification framework that intends to
	  replace the existing {ip,ip6,arp,eb}_tables infrastructure. It
	  provides a pseudo-state machine with an extensible instruction-set
	  (also known as expressions) that the userspace 'nft' utility
	  (http://www.netfilter.org/projects/nftables) uses to build the
	  rule-set. It also comes with the generic set infrastructure that
	  allows you to construct mappings between matchings and actions
	  for performance lookups.

	  To compile it as a module, choose M here.
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if NF_TABLES

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config NF_TABLES_SET
	tristate "Netfilter nf_tables set infrastructure"
	help
	  This option enables the nf_tables set infrastructure that allows to
	  look up for elements in a set and to build one-way mappings between
	  matchings and actions.

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config NF_TABLES_INET
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	depends on IPV6
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	select NF_TABLES_IPV4
	select NF_TABLES_IPV6
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	bool "Netfilter nf_tables mixed IPv4/IPv6 tables support"
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	help
	  This option enables support for a mixed IPv4/IPv6 "inet" table.

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config NF_TABLES_NETDEV
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	bool "Netfilter nf_tables netdev tables support"
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	help
	  This option enables support for the "netdev" table.

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config NFT_NUMGEN
	tristate "Netfilter nf_tables number generator module"
	help
	  This option adds the number generator expression used to perform
	  incremental counting and random numbers bound to a upper limit.

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config NFT_CT
	depends on NF_CONNTRACK
	tristate "Netfilter nf_tables conntrack module"
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	help
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	  This option adds the "ct" expression that you can use to match
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	  connection tracking information such as the flow state.
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config NFT_FLOW_OFFLOAD
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	depends on NF_CONNTRACK && NF_FLOW_TABLE
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	tristate "Netfilter nf_tables hardware flow offload module"
	help
	  This option adds the "flow_offload" expression that you can use to
	  choose what flows are placed into the hardware.

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config NFT_COUNTER
	tristate "Netfilter nf_tables counter module"
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	help
	  This option adds the "counter" expression that you can use to
	  include packet and byte counters in a rule.
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config NFT_CONNLIMIT
	tristate "Netfilter nf_tables connlimit module"
	depends on NF_CONNTRACK
	depends on NETFILTER_ADVANCED
	select NETFILTER_CONNCOUNT
	help
	  This option adds the "connlimit" expression that you can use to
	  ratelimit rule matchings per connections.

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config NFT_LOG
	tristate "Netfilter nf_tables log module"
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	help
	  This option adds the "log" expression that you can use to log
	  packets matching some criteria.
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config NFT_LIMIT
	tristate "Netfilter nf_tables limit module"
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	help
	  This option adds the "limit" expression that you can use to
	  ratelimit rule matchings.
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config NFT_MASQ
	depends on NF_CONNTRACK
	depends on NF_NAT
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	select NF_NAT_MASQUERADE
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	tristate "Netfilter nf_tables masquerade support"
	help
	  This option adds the "masquerade" expression that you can use
	  to perform NAT in the masquerade flavour.

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config NFT_REDIR
	depends on NF_CONNTRACK
	depends on NF_NAT
	tristate "Netfilter nf_tables redirect support"
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	select NF_NAT_REDIRECT
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	help
	  This options adds the "redirect" expression that you can use
	  to perform NAT in the redirect flavour.

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config NFT_NAT
	depends on NF_CONNTRACK
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	select NF_NAT
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	tristate "Netfilter nf_tables nat module"
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	help
	  This option adds the "nat" expression that you can use to perform
	  typical Network Address Translation (NAT) packet transformations.
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config NFT_TUNNEL
	tristate "Netfilter nf_tables tunnel module"
	help
	  This option adds the "tunnel" expression that you can use to set
	  tunneling policies.

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config NFT_OBJREF
	tristate "Netfilter nf_tables stateful object reference module"
	help
	  This option adds the "objref" expression that allows you to refer to
	  stateful objects, such as counters and quotas.

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config NFT_QUEUE
	depends on NETFILTER_NETLINK_QUEUE
	tristate "Netfilter nf_tables queue module"
	help
	  This is required if you intend to use the userspace queueing
	  infrastructure (also known as NFQUEUE) from nftables.

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config NFT_QUOTA
	tristate "Netfilter nf_tables quota module"
	help
	  This option adds the "quota" expression that you can use to match
	  enforce bytes quotas.

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config NFT_REJECT
	default m if NETFILTER_ADVANCED=n
	tristate "Netfilter nf_tables reject support"
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	depends on !NF_TABLES_INET || (IPV6!=m || m)
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	help
	  This option adds the "reject" expression that you can use to
	  explicitly deny and notify via TCP reset/ICMP informational errors
	  unallowed traffic.
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config NFT_REJECT_INET
	depends on NF_TABLES_INET
	default NFT_REJECT
	tristate

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config NFT_COMPAT
	depends on NETFILTER_XTABLES
	tristate "Netfilter x_tables over nf_tables module"
	help
	  This is required if you intend to use any of existing
	  x_tables match/target extensions over the nf_tables
	  framework.

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config NFT_HASH
	tristate "Netfilter nf_tables hash module"
	help
	  This option adds the "hash" expression that you can use to perform
	  a hash operation on registers.

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config NFT_FIB
	tristate

config NFT_FIB_INET
	depends on NF_TABLES_INET
	depends on NFT_FIB_IPV4
	depends on NFT_FIB_IPV6
	tristate "Netfilter nf_tables fib inet support"
	help
	  This option allows using the FIB expression from the inet table.
	  The lookup will be delegated to the IPv4 or IPv6 FIB depending
	  on the protocol of the packet.

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config NFT_XFRM
	tristate "Netfilter nf_tables xfrm/IPSec security association matching"
	depends on XFRM
	help
	  This option adds an expression that you can use to extract properties
	  of a packets security association.

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config NFT_SOCKET
	tristate "Netfilter nf_tables socket match support"
	depends on IPV6 || IPV6=n
	select NF_SOCKET_IPV4
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	select NF_SOCKET_IPV6 if NF_TABLES_IPV6
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	help
	  This option allows matching for the presence or absence of a
	  corresponding socket and its attributes.

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config NFT_OSF
	tristate "Netfilter nf_tables passive OS fingerprint support"
	depends on NETFILTER_ADVANCED
	select NETFILTER_NETLINK_OSF
	help
	  This option allows matching packets from an specific OS.

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config NFT_TPROXY
	tristate "Netfilter nf_tables tproxy support"
	depends on IPV6 || IPV6=n
	select NF_DEFRAG_IPV4
	select NF_DEFRAG_IPV6 if NF_TABLES_IPV6
	select NF_TPROXY_IPV4
	select NF_TPROXY_IPV6 if NF_TABLES_IPV6
	help
	  This makes transparent proxy support available in nftables.

657 658 659 660 661 662 663 664 665 666 667 668 669 670
if NF_TABLES_NETDEV

config NF_DUP_NETDEV
	tristate "Netfilter packet duplication support"
	help
	  This option enables the generic packet duplication infrastructure
	  for Netfilter.

config NFT_DUP_NETDEV
	tristate "Netfilter nf_tables netdev packet duplication support"
	select NF_DUP_NETDEV
	help
	  This option enables packet duplication for the "netdev" family.

671 672 673 674 675 676
config NFT_FWD_NETDEV
	tristate "Netfilter nf_tables netdev packet forwarding support"
	select NF_DUP_NETDEV
	help
	  This option enables packet forwarding for the "netdev" family.

677 678 679 680 681 682 683 684 685
config NFT_FIB_NETDEV
	depends on NFT_FIB_IPV4
	depends on NFT_FIB_IPV6
	tristate "Netfilter nf_tables netdev fib lookups support"
	help
	  This option allows using the FIB expression from the netdev table.
	  The lookup will be delegated to the IPv4 or IPv6 FIB depending
	  on the protocol of the packet.

686 687
endif # NF_TABLES_NETDEV

688 689
endif # NF_TABLES

690 691
config NF_FLOW_TABLE_INET
	tristate "Netfilter flow table mixed IPv4/IPv6 module"
692
	depends on NF_FLOW_TABLE
693 694 695 696 697
	help
          This option adds the flow table mixed IPv4/IPv6 support.

	  To compile it as a module, choose M here.

698 699
config NF_FLOW_TABLE
	tristate "Netfilter flow table module"
700 701 702
	depends on NETFILTER_INGRESS
	depends on NF_CONNTRACK
	depends on NF_TABLES
703 704 705 706 707
	help
	  This option adds the flow table core infrastructure.

	  To compile it as a module, choose M here.

708 709
config NETFILTER_XTABLES
	tristate "Netfilter Xtables support (required for ip_tables)"
710
	default m if NETFILTER_ADVANCED=n
711 712 713 714
	help
	  This is required if you intend to use any of ip_tables,
	  ip6_tables or arp_tables.

715 716
if NETFILTER_XTABLES

717 718 719 720 721 722 723 724 725 726 727 728 729
comment "Xtables combined modules"

config NETFILTER_XT_MARK
	tristate 'nfmark target and match support'
	default m if NETFILTER_ADVANCED=n
	---help---
	This option adds the "MARK" target and "mark" match.

	Netfilter mark matching allows you to match packets based on the
	"nfmark" value in the packet.
	The target allows you to create rules in the "mangle" table which alter
	the netfilter mark (nfmark) field associated with the packet.

730 731
	Prior to routing, the nfmark can influence the routing method and can
	also be used by other subsystems to change their behavior.
732

733 734 735 736 737 738 739 740 741 742 743 744
config NETFILTER_XT_CONNMARK
	tristate 'ctmark target and match support'
	depends on NF_CONNTRACK
	depends on NETFILTER_ADVANCED
	select NF_CONNTRACK_MARK
	---help---
	This option adds the "CONNMARK" target and "connmark" match.

	Netfilter allows you to store a mark value per connection (a.k.a.
	ctmark), similarly to the packet mark (nfmark). Using this
	target and match, you can set and match on this mark.

745 746 747 748 749 750 751 752 753 754 755 756
config NETFILTER_XT_SET
	tristate 'set target and match support'
	depends on IP_SET
	depends on NETFILTER_ADVANCED
	help
	  This option adds the "SET" target and "set" match.

	  Using this target and match, you can add/delete and match
	  elements in the sets created by ipset(8).

	  To compile it as a module, choose M here.  If unsure, say N.

757 758
# alphabetically ordered list of targets

759 760
comment "Xtables targets"

761 762 763 764 765 766 767 768 769 770
config NETFILTER_XT_TARGET_AUDIT
	tristate "AUDIT target support"
	depends on AUDIT
	depends on NETFILTER_ADVANCED
	---help---
	  This option adds a 'AUDIT' target, which can be used to create
	  audit records for packets dropped/accepted.

	  To compileit as a module, choose M here. If unsure, say N.

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config NETFILTER_XT_TARGET_CHECKSUM
	tristate "CHECKSUM target support"
	depends on IP_NF_MANGLE || IP6_NF_MANGLE
	depends on NETFILTER_ADVANCED
	---help---
	  This option adds a `CHECKSUM' target, which can be used in the iptables mangle
777
	  table to work around buggy DHCP clients in virtualized environments.
778

779 780 781 782 783
	  Some old DHCP clients drop packets because they are not aware
	  that the checksum would normally be offloaded to hardware and
	  thus should be considered valid.
	  This target can be used to fill in the checksum using iptables
	  when such packets are sent via a virtual network device.
784 785 786

	  To compile it as a module, choose M here.  If unsure, say N.

787 788
config NETFILTER_XT_TARGET_CLASSIFY
	tristate '"CLASSIFY" target support'
789
	depends on NETFILTER_ADVANCED
790 791 792 793 794 795 796 797 798 799 800
	help
	  This option adds a `CLASSIFY' target, which enables the user to set
	  the priority of a packet. Some qdiscs can use this value for
	  classification, among these are:

  	  atm, cbq, dsmark, pfifo_fast, htb, prio

	  To compile it as a module, choose M here.  If unsure, say N.

config NETFILTER_XT_TARGET_CONNMARK
	tristate  '"CONNMARK" target support'
801
	depends on NF_CONNTRACK
802
	depends on NETFILTER_ADVANCED
803 804 805 806 807
	select NETFILTER_XT_CONNMARK
	---help---
	This is a backwards-compat option for the user's convenience
	(e.g. when running oldconfig). It selects
	CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
808

809 810
config NETFILTER_XT_TARGET_CONNSECMARK
	tristate '"CONNSECMARK" target support'
811
	depends on NF_CONNTRACK && NF_CONNTRACK_SECMARK
812 813 814 815 816 817 818 819 820
	default m if NETFILTER_ADVANCED=n
	help
	  The CONNSECMARK target copies security markings from packets
	  to connections, and restores security markings from connections
	  to packets (if the packets are not already marked).  This would
	  normally be used in conjunction with the SECMARK target.

	  To compile it as a module, choose M here.  If unsure, say N.

821 822 823 824 825 826 827 828 829 830 831 832
config NETFILTER_XT_TARGET_CT
	tristate '"CT" target support'
	depends on NF_CONNTRACK
	depends on IP_NF_RAW || IP6_NF_RAW
	depends on NETFILTER_ADVANCED
	help
	  This options adds a `CT' target, which allows to specify initial
	  connection tracking parameters like events to be delivered and
	  the helper to be used.

	  To compile it as a module, choose M here.  If unsure, say N.

833
config NETFILTER_XT_TARGET_DSCP
834
	tristate '"DSCP" and "TOS" target support'
835
	depends on IP_NF_MANGLE || IP6_NF_MANGLE
836
	depends on NETFILTER_ADVANCED
837 838 839 840 841 842
	help
	  This option adds a `DSCP' target, which allows you to manipulate
	  the IPv4/IPv6 header DSCP field (differentiated services codepoint).

	  The DSCP field can have any value between 0x0 and 0x3f inclusive.

843 844
	  It also adds the "TOS" target, which allows you to create rules in
	  the "mangle" table which alter the Type Of Service field of an IPv4
845
	  or the Priority field of an IPv6 packet, prior to routing.
846

847 848
	  To compile it as a module, choose M here.  If unsure, say N.

849 850 851 852 853 854 855 856 857 858 859 860 861 862 863
config NETFILTER_XT_TARGET_HL
	tristate '"HL" hoplimit target support'
	depends on IP_NF_MANGLE || IP6_NF_MANGLE
	depends on NETFILTER_ADVANCED
	---help---
	This option adds the "HL" (for IPv6) and "TTL" (for IPv4)
	targets, which enable the user to change the
	hoplimit/time-to-live value of the IP header.

	While it is safe to decrement the hoplimit/TTL value, the
	modules also allow to increment and set the hoplimit value of
	the header to arbitrary values. This is EXTREMELY DANGEROUS
	since you can easily create immortal packets that loop
	forever on the network.

864 865
config NETFILTER_XT_TARGET_HMARK
	tristate '"HMARK" target support'
866
	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
867 868 869 870 871 872
	depends on NETFILTER_ADVANCED
	---help---
	This option adds the "HMARK" target.

	The target allows you to create rules in the "raw" and "mangle" tables
	which set the skbuff mark by means of hash calculation within a given
873 874
	range. The nfmark can influence the routing method and can also be used
	by other subsystems to change their behaviour.
875 876 877

	To compile it as a module, choose M here. If unsure, say N.

878 879 880 881 882 883 884 885 886 887 888 889
config NETFILTER_XT_TARGET_IDLETIMER
	tristate  "IDLETIMER target support"
	depends on NETFILTER_ADVANCED
	help

	  This option adds the `IDLETIMER' target.  Each matching packet
	  resets the timer associated with label specified when the rule is
	  added.  When the timer expires, it triggers a sysfs notification.
	  The remaining time for expiration can be read via sysfs.

	  To compile it as a module, choose M here.  If unsure, say N.

890 891
config NETFILTER_XT_TARGET_LED
	tristate '"LED" target support'
892
	depends on LEDS_CLASS && LEDS_TRIGGERS
893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911
	depends on NETFILTER_ADVANCED
	help
	  This option adds a `LED' target, which allows you to blink LEDs in
	  response to particular packets passing through your machine.

	  This can be used to turn a spare LED into a network activity LED,
	  which only flashes in response to FTP transfers, for example.  Or
	  you could have an LED which lights up for a minute or two every time
	  somebody connects to your machine via SSH.

	  You will need support for the "led" class to make this work.

	  To create an LED trigger for incoming SSH traffic:
	    iptables -A INPUT -p tcp --dport 22 -j LED --led-trigger-id ssh --led-delay 1000

	  Then attach the new trigger to an LED on your system:
	    echo netfilter-ssh > /sys/class/leds/<ledname>/trigger

	  For more information on the LEDs available on your system, see
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Paul Bolle 已提交
912
	  Documentation/leds/leds-class.txt
913

914 915
config NETFILTER_XT_TARGET_LOG
	tristate "LOG target support"
916 917
	select NF_LOG_COMMON
	select NF_LOG_IPV4
918
	select NF_LOG_IPV6 if IP6_NF_IPTABLES
919 920 921 922 923 924 925
	default m if NETFILTER_ADVANCED=n
	help
	  This option adds a `LOG' target, which allows you to create rules in
	  any iptables table which records the packet header to the syslog.

	  To compile it as a module, choose M here.  If unsure, say N.

926 927
config NETFILTER_XT_TARGET_MARK
	tristate '"MARK" target support'
928 929 930 931 932 933
	depends on NETFILTER_ADVANCED
	select NETFILTER_XT_MARK
	---help---
	This is a backwards-compat option for the user's convenience
	(e.g. when running oldconfig). It selects
	CONFIG_NETFILTER_XT_MARK (combined mark/MARK module).
934

935 936 937 938 939 940 941 942
config NETFILTER_XT_NAT
	tristate '"SNAT and DNAT" targets support'
	depends on NF_NAT
	---help---
	This option enables the SNAT and DNAT targets.

	To compile it as a module, choose M here. If unsure, say N.

943 944 945 946 947 948 949 950 951 952
config NETFILTER_XT_TARGET_NETMAP
	tristate '"NETMAP" target support'
	depends on NF_NAT
	---help---
	NETMAP is an implementation of static 1:1 NAT mapping of network
	addresses. It maps the network address part, while keeping the host
	address part intact.

	To compile it as a module, choose M here. If unsure, say N.

953 954
config NETFILTER_XT_TARGET_NFLOG
	tristate '"NFLOG" target support'
955
	default m if NETFILTER_ADVANCED=n
956
	select NETFILTER_NETLINK_LOG
957 958
	help
	  This option enables the NFLOG target, which allows to LOG
959
	  messages through nfnetlink_log.
960 961 962

	  To compile it as a module, choose M here.  If unsure, say N.

963 964 965
config NETFILTER_XT_TARGET_NFQUEUE
	tristate '"NFQUEUE" target Support'
	depends on NETFILTER_ADVANCED
966
	select NETFILTER_NETLINK_QUEUE
967 968 969 970 971 972 973 974
	help
	  This target replaced the old obsolete QUEUE target.

	  As opposed to QUEUE, it supports 65535 different queues,
	  not just one.

	  To compile it as a module, choose M here.  If unsure, say N.

975 976
config NETFILTER_XT_TARGET_NOTRACK
	tristate  '"NOTRACK" target support (DEPRECATED)'
977 978 979
	depends on NF_CONNTRACK
	depends on IP_NF_RAW || IP6_NF_RAW
	depends on NETFILTER_ADVANCED
980 981
	select NETFILTER_XT_TARGET_CT

982 983
config NETFILTER_XT_TARGET_RATEEST
	tristate '"RATEEST" target support'
984
	depends on NETFILTER_ADVANCED
985 986 987 988 989 990 991
	help
	  This option adds a `RATEEST' target, which allows to measure
	  rates similar to TC estimators. The `rateest' match can be
	  used to match on the measured rates.

	  To compile it as a module, choose M here.  If unsure, say N.

992 993 994
config NETFILTER_XT_TARGET_REDIRECT
	tristate "REDIRECT target support"
	depends on NF_NAT
995
	select NF_NAT_REDIRECT
996 997 998 999 1000 1001 1002 1003
	---help---
	REDIRECT is a special case of NAT: all incoming connections are
	mapped onto the incoming interface's address, causing the packets to
	come to the local machine instead of passing through. This is
	useful for transparent proxies.

	To compile it as a module, choose M here. If unsure, say N.

1004
config NETFILTER_XT_TARGET_TEE
1005
	tristate '"TEE" - packet cloning to alternate destination'
1006
	depends on NETFILTER_ADVANCED
1007
	depends on IPV6 || IPV6=n
1008
	depends on !NF_CONNTRACK || NF_CONNTRACK
1009
	select NF_DUP_IPV4
1010
	select NF_DUP_IPV6 if IP6_NF_IPTABLES
1011 1012 1013 1014
	---help---
	This option adds a "TEE" target with which a packet can be cloned and
	this clone be rerouted to another nexthop.

1015
config NETFILTER_XT_TARGET_TPROXY
1016
	tristate '"TPROXY" target transparent proxying support'
1017 1018
	depends on NETFILTER_XTABLES
	depends on NETFILTER_ADVANCED
1019 1020
	depends on IPV6 || IPV6=n
	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
1021
	depends on IP_NF_MANGLE
1022
	select NF_DEFRAG_IPV4
1023
	select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES != n
M
Máté Eckl 已提交
1024 1025
	select NF_TPROXY_IPV4
	select NF_TPROXY_IPV6 if IP6_NF_IPTABLES
1026 1027 1028 1029 1030
	help
	  This option adds a `TPROXY' target, which is somewhat similar to
	  REDIRECT.  It can only be used in the mangle table and is useful
	  to redirect traffic to a transparent proxy.  It does _not_ depend
	  on Netfilter connection tracking and NAT, unlike REDIRECT.
1031 1032 1033
	  For it to work you will have to configure certain iptables rules
	  and use policy routing. For more information on how to set it up
	  see Documentation/networking/tproxy.txt.
1034 1035 1036

	  To compile it as a module, choose M here.  If unsure, say N.

1037 1038 1039
config NETFILTER_XT_TARGET_TRACE
	tristate  '"TRACE" target support'
	depends on IP_NF_RAW || IP6_NF_RAW
1040
	depends on NETFILTER_ADVANCED
1041 1042 1043 1044 1045 1046
	help
	  The TRACE target allows you to mark packets so that the kernel
	  will log every rule which match the packets as those traverse
	  the tables, chains, rules.

	  If you want to compile it as a module, say M here and read
1047
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1048

1049 1050
config NETFILTER_XT_TARGET_SECMARK
	tristate '"SECMARK" target support'
1051
	depends on NETWORK_SECMARK
1052
	default m if NETFILTER_ADVANCED=n
1053 1054 1055 1056 1057 1058
	help
	  The SECMARK target allows security marking of network
	  packets, for use with security subsystems.

	  To compile it as a module, choose M here.  If unsure, say N.

1059 1060
config NETFILTER_XT_TARGET_TCPMSS
	tristate '"TCPMSS" target support'
1061
	depends on IPV6 || IPV6=n
1062
	default m if NETFILTER_ADVANCED=n
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085
	---help---
	  This option adds a `TCPMSS' target, which allows you to alter the
	  MSS value of TCP SYN packets, to control the maximum size for that
	  connection (usually limiting it to your outgoing interface's MTU
	  minus 40).

	  This is used to overcome criminally braindead ISPs or servers which
	  block ICMP Fragmentation Needed packets.  The symptoms of this
	  problem are that everything works fine from your Linux
	  firewall/router, but machines behind it can never exchange large
	  packets:
	        1) Web browsers connect, then hang with no data received.
	        2) Small mail works fine, but large emails hang.
	        3) ssh works fine, but scp hangs after initial handshaking.

	  Workaround: activate this option and add a rule to your firewall
	  configuration like:

	  iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
	                 -j TCPMSS --clamp-mss-to-pmtu

	  To compile it as a module, choose M here.  If unsure, say N.

1086
config NETFILTER_XT_TARGET_TCPOPTSTRIP
1087
	tristate '"TCPOPTSTRIP" target support'
1088
	depends on IP_NF_MANGLE || IP6_NF_MANGLE
1089
	depends on NETFILTER_ADVANCED
1090 1091 1092 1093
	help
	  This option adds a "TCPOPTSTRIP" target, which allows you to strip
	  TCP options from TCP packets.

1094 1095 1096 1097
# alphabetically ordered list of matches

comment "Xtables matches"

1098 1099
config NETFILTER_XT_MATCH_ADDRTYPE
	tristate '"addrtype" address type match support'
1100
	default m if NETFILTER_ADVANCED=n
1101 1102 1103 1104 1105 1106 1107
	---help---
	  This option allows you to match what routing thinks of an address,
	  eg. UNICAST, LOCAL, BROADCAST, ...

	  If you want to compile it as a module, say M here and read
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.

1108 1109 1110 1111 1112 1113 1114 1115 1116
config NETFILTER_XT_MATCH_BPF
	tristate '"bpf" match support'
	depends on NETFILTER_ADVANCED
	help
	  BPF matching applies a linux socket filter to each packet and
	  accepts those for which the filter returns non-zero.

	  To compile it as a module, choose M here.  If unsure, say N.

1117 1118 1119 1120 1121 1122 1123 1124 1125 1126
config NETFILTER_XT_MATCH_CGROUP
	tristate '"control group" match support'
	depends on NETFILTER_ADVANCED
	depends on CGROUPS
	select CGROUP_NET_CLASSID
	---help---
	Socket/process control group matching allows you to match locally
	generated packets based on which net_cls control group processes
	belong to.

1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
config NETFILTER_XT_MATCH_CLUSTER
	tristate '"cluster" match support'
	depends on NF_CONNTRACK
	depends on NETFILTER_ADVANCED
	---help---
	  This option allows you to build work-load-sharing clusters of
	  network servers/stateful firewalls without having a dedicated
	  load-balancing router/server/switch. Basically, this match returns
	  true when the packet must be handled by this cluster node. Thus,
	  all nodes see all packets and this match decides which node handles
	  what packets. The work-load sharing algorithm is based on source
	  address hashing.

	  If you say Y or M here, try `iptables -m cluster --help` for
	  more information.

1143 1144
config NETFILTER_XT_MATCH_COMMENT
	tristate  '"comment" match support'
1145
	depends on NETFILTER_ADVANCED
1146 1147 1148 1149 1150
	help
	  This option adds a `comment' dummy-match, which allows you to put
	  comments in your iptables ruleset.

	  If you want to compile it as a module, say M here and read
1151
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1152 1153 1154

config NETFILTER_XT_MATCH_CONNBYTES
	tristate  '"connbytes" per-connection counter match support'
1155
	depends on NF_CONNTRACK
1156
	depends on NETFILTER_ADVANCED
1157 1158 1159 1160 1161
	help
	  This option adds a `connbytes' match, which allows you to match the
	  number of bytes and/or packets for each direction within a connection.

	  If you want to compile it as a module, say M here and read
1162
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1163

1164 1165 1166
config NETFILTER_XT_MATCH_CONNLABEL
	tristate '"connlabel" match support'
	select NF_CONNTRACK_LABELS
1167
	depends on NF_CONNTRACK
1168 1169 1170 1171 1172 1173 1174 1175 1176
	depends on NETFILTER_ADVANCED
	---help---
	  This match allows you to test and assign userspace-defined labels names
	  to a connection.  The kernel only stores bit values - mapping
	  names to bits is done by userspace.

	  Unlike connmark, more than 32 flag bits may be assigned to a
	  connection simultaneously.

1177
config NETFILTER_XT_MATCH_CONNLIMIT
1178
	tristate '"connlimit" match support'
1179
	depends on NF_CONNTRACK
1180
	depends on NETFILTER_ADVANCED
1181
	select NETFILTER_CONNCOUNT
1182 1183 1184 1185
	---help---
	  This match allows you to match against the number of parallel
	  connections to a server per client IP address (or address block).

1186 1187
config NETFILTER_XT_MATCH_CONNMARK
	tristate  '"connmark" connection mark match support'
1188
	depends on NF_CONNTRACK
1189
	depends on NETFILTER_ADVANCED
1190 1191 1192 1193 1194
	select NETFILTER_XT_CONNMARK
	---help---
	This is a backwards-compat option for the user's convenience
	(e.g. when running oldconfig). It selects
	CONFIG_NETFILTER_XT_CONNMARK (combined connmark/CONNMARK module).
1195 1196 1197

config NETFILTER_XT_MATCH_CONNTRACK
	tristate '"conntrack" connection tracking match support'
1198
	depends on NF_CONNTRACK
1199
	default m if NETFILTER_ADVANCED=n
1200 1201 1202 1203 1204 1205 1206 1207
	help
	  This is a general conntrack match module, a superset of the state match.

	  It allows matching on additional conntrack information, which is
	  useful in complex configurations, such as NAT gateways with multiple
	  internet links or tunnels.

	  To compile it as a module, choose M here.  If unsure, say N.
E
Eric Dumazet 已提交
1208 1209 1210 1211 1212 1213 1214 1215 1216

config NETFILTER_XT_MATCH_CPU
	tristate '"cpu" match support'
	depends on NETFILTER_ADVANCED
	help
	  CPU matching allows you to match packets based on the CPU
	  currently handling the packet.

	  To compile it as a module, choose M here.  If unsure, say N.
1217 1218

config NETFILTER_XT_MATCH_DCCP
1219
	tristate '"dccp" protocol match support'
1220
	depends on NETFILTER_ADVANCED
1221
	default IP_DCCP
1222 1223 1224 1225 1226 1227
	help
	  With this option enabled, you will be able to use the iptables
	  `dccp' match in order to match on DCCP source/destination ports
	  and DCCP flags.

	  If you want to compile it as a module, say M here and read
1228
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1229

1230 1231 1232 1233 1234 1235 1236 1237 1238
config NETFILTER_XT_MATCH_DEVGROUP
	tristate '"devgroup" match support'
	depends on NETFILTER_ADVANCED
	help
	  This options adds a `devgroup' match, which allows to match on the
	  device group a network device is assigned to.

	  To compile it as a module, choose M here.  If unsure, say N.

1239
config NETFILTER_XT_MATCH_DSCP
1240
	tristate '"dscp" and "tos" match support'
1241
	depends on NETFILTER_ADVANCED
1242 1243 1244 1245 1246 1247
	help
	  This option adds a `DSCP' match, which allows you to match against
	  the IPv4/IPv6 header DSCP field (differentiated services codepoint).

	  The DSCP field can have any value between 0x0 and 0x3f inclusive.

1248 1249 1250 1251
	  It will also add a "tos" match, which allows you to match packets
	  based on the Type Of Service fields of the IPv4 packet (which share
	  the same bits as DSCP).

1252 1253
	  To compile it as a module, choose M here.  If unsure, say N.

1254 1255 1256 1257 1258 1259 1260 1261 1262
config NETFILTER_XT_MATCH_ECN
	tristate '"ecn" match support'
	depends on NETFILTER_ADVANCED
	---help---
	This option adds an "ECN" match, which allows you to match against
	the IPv4 and TCP header ECN fields.

	To compile it as a module, choose M here. If unsure, say N.

1263
config NETFILTER_XT_MATCH_ESP
1264
	tristate '"esp" match support'
1265
	depends on NETFILTER_ADVANCED
1266 1267 1268 1269 1270 1271
	help
	  This match extension allows you to match a range of SPIs
	  inside ESP header of IPSec packets.

	  To compile it as a module, choose M here.  If unsure, say N.

1272 1273
config NETFILTER_XT_MATCH_HASHLIMIT
	tristate '"hashlimit" match support'
1274
	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286
	depends on NETFILTER_ADVANCED
	help
	  This option adds a `hashlimit' match.

	  As opposed to `limit', this match dynamically creates a hash table
	  of limit buckets, based on your selection of source/destination
	  addresses and/or ports.

	  It enables you to express policies like `10kpps for any given
	  destination address' or `500pps from any given source address'
	  with a single rule.

1287 1288
config NETFILTER_XT_MATCH_HELPER
	tristate '"helper" match support'
1289
	depends on NF_CONNTRACK
1290
	depends on NETFILTER_ADVANCED
1291 1292 1293 1294 1295 1296
	help
	  Helper matching allows you to match packets in dynamic connections
	  tracked by a conntrack-helper, ie. ip_conntrack_ftp

	  To compile it as a module, choose M here.  If unsure, say Y.

1297 1298 1299 1300 1301 1302 1303 1304
config NETFILTER_XT_MATCH_HL
	tristate '"hl" hoplimit/TTL match support'
	depends on NETFILTER_ADVANCED
	---help---
	HL matching allows you to match packets based on the hoplimit
	in the IPv6 header, or the time-to-live field in the IPv4
	header of the packet.

1305 1306 1307 1308 1309 1310 1311 1312 1313
config NETFILTER_XT_MATCH_IPCOMP
	tristate '"ipcomp" match support'
	depends on NETFILTER_ADVANCED
	help
	  This match extension allows you to match a range of CPIs(16 bits)
	  inside IPComp header of IPSec packets.

	  To compile it as a module, choose M here.  If unsure, say N.

1314 1315 1316 1317 1318 1319 1320 1321 1322 1323
config NETFILTER_XT_MATCH_IPRANGE
	tristate '"iprange" address range match support'
	depends on NETFILTER_ADVANCED
	---help---
	This option adds a "iprange" match, which allows you to match based on
	an IP address range. (Normal iptables only matches on single addresses
	with an optional mask.)

	If unsure, say M.

1324 1325 1326 1327 1328 1329 1330 1331 1332 1333
config NETFILTER_XT_MATCH_IPVS
	tristate '"ipvs" match support'
	depends on IP_VS
	depends on NETFILTER_ADVANCED
	depends on NF_CONNTRACK
	help
	  This option allows you to match against IPVS properties of a packet.

	  If unsure, say N.

1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
config NETFILTER_XT_MATCH_L2TP
	tristate '"l2tp" match support'
	depends on NETFILTER_ADVANCED
	default L2TP
	---help---
	This option adds an "L2TP" match, which allows you to match against
	L2TP protocol header fields.

	To compile it as a module, choose M here. If unsure, say N.

1344 1345
config NETFILTER_XT_MATCH_LENGTH
	tristate '"length" match support'
1346
	depends on NETFILTER_ADVANCED
1347 1348 1349 1350 1351 1352 1353 1354
	help
	  This option allows you to match the length of a packet against a
	  specific value or range of values.

	  To compile it as a module, choose M here.  If unsure, say N.

config NETFILTER_XT_MATCH_LIMIT
	tristate '"limit" match support'
1355
	depends on NETFILTER_ADVANCED
1356 1357 1358 1359 1360 1361 1362 1363 1364
	help
	  limit matching allows you to control the rate at which a rule can be
	  matched: mainly useful in combination with the LOG target ("LOG
	  target support", below) and to avoid some Denial of Service attacks.

	  To compile it as a module, choose M here.  If unsure, say N.

config NETFILTER_XT_MATCH_MAC
	tristate '"mac" address match support'
1365
	depends on NETFILTER_ADVANCED
1366 1367 1368 1369 1370 1371 1372 1373
	help
	  MAC matching allows you to match packets based on the source
	  Ethernet address of the packet.

	  To compile it as a module, choose M here.  If unsure, say N.

config NETFILTER_XT_MATCH_MARK
	tristate '"mark" match support'
1374 1375 1376 1377 1378 1379
	depends on NETFILTER_ADVANCED
	select NETFILTER_XT_MARK
	---help---
	This is a backwards-compat option for the user's convenience
	(e.g. when running oldconfig). It selects
	CONFIG_NETFILTER_XT_MARK (combined mark/MARK module).
1380

1381 1382 1383 1384 1385 1386 1387 1388 1389 1390
config NETFILTER_XT_MATCH_MULTIPORT
	tristate '"multiport" Multiple port match support'
	depends on NETFILTER_ADVANCED
	help
	  Multiport matching allows you to match TCP or UDP packets based on
	  a series of source or destination ports: normally a rule can only
	  match a single range of ports.

	  To compile it as a module, choose M here.  If unsure, say N.

1391 1392
config NETFILTER_XT_MATCH_NFACCT
	tristate '"nfacct" match support'
1393
	depends on NETFILTER_ADVANCED
1394 1395 1396 1397 1398 1399 1400
	select NETFILTER_NETLINK_ACCT
	help
	  This option allows you to use the extended accounting through
	  nfnetlink_acct.

	  To compile it as a module, choose M here.  If unsure, say N.

1401 1402
config NETFILTER_XT_MATCH_OSF
	tristate '"osf" Passive OS fingerprint match'
1403 1404
	depends on NETFILTER_ADVANCED
	select NETFILTER_NETLINK_OSF
1405 1406 1407 1408 1409 1410 1411 1412 1413 1414
	help
	  This option selects the Passive OS Fingerprinting match module
	  that allows to passively match the remote operating system by
	  analyzing incoming TCP SYN packets.

	  Rules and loading software can be downloaded from
	  http://www.ioremap.net/projects/osf

	  To compile it as a module, choose M here.  If unsure, say N.

1415 1416
config NETFILTER_XT_MATCH_OWNER
	tristate '"owner" match support'
1417
	depends on NETFILTER_ADVANCED
1418 1419 1420 1421 1422
	---help---
	Socket owner matching allows you to match locally-generated packets
	based on who created the socket: the user or group. It is also
	possible to check whether a socket actually exists.

1423 1424
config NETFILTER_XT_MATCH_POLICY
	tristate 'IPsec "policy" match support'
1425
	depends on XFRM
1426
	default m if NETFILTER_ADVANCED=n
1427 1428 1429 1430 1431 1432 1433
	help
	  Policy matching allows you to match packets based on the
	  IPsec policy that was used during decapsulation/will
	  be used during encapsulation.

	  To compile it as a module, choose M here.  If unsure, say N.

1434 1435
config NETFILTER_XT_MATCH_PHYSDEV
	tristate '"physdev" match support'
1436
	depends on BRIDGE && BRIDGE_NETFILTER
1437
	depends on NETFILTER_ADVANCED
1438 1439 1440 1441 1442 1443 1444 1445
	help
	  Physdev packet matching matches against the physical bridge ports
	  the IP packet arrived on or will leave by.

	  To compile it as a module, choose M here.  If unsure, say N.

config NETFILTER_XT_MATCH_PKTTYPE
	tristate '"pkttype" packet type match support'
1446
	depends on NETFILTER_ADVANCED
1447 1448 1449 1450 1451 1452 1453 1454 1455
	help
	  Packet type matching allows you to match a packet by
	  its "class", eg. BROADCAST, MULTICAST, ...

	  Typical usage:
	  iptables -A INPUT -m pkttype --pkt-type broadcast -j LOG

	  To compile it as a module, choose M here.  If unsure, say N.

1456 1457
config NETFILTER_XT_MATCH_QUOTA
	tristate '"quota" match support'
1458
	depends on NETFILTER_ADVANCED
1459 1460 1461 1462 1463
	help
	  This option adds a `quota' match, which allows to match on a
	  byte counter.

	  If you want to compile it as a module, say M here and read
1464
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1465

1466 1467
config NETFILTER_XT_MATCH_RATEEST
	tristate '"rateest" match support'
1468
	depends on NETFILTER_ADVANCED
1469 1470 1471 1472 1473 1474 1475
	select NETFILTER_XT_TARGET_RATEEST
	help
	  This option adds a `rateest' match, which allows to match on the
	  rate estimated by the RATEEST target.

	  To compile it as a module, choose M here.  If unsure, say N.

1476 1477
config NETFILTER_XT_MATCH_REALM
	tristate  '"realm" match support'
1478
	depends on NETFILTER_ADVANCED
1479
	select IP_ROUTE_CLASSID
1480 1481 1482
	help
	  This option adds a `realm' match, which allows you to use the realm
	  key from the routing subsystem inside iptables.
1483

1484 1485
	  This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option 
	  in tc world.
1486

1487
	  If you want to compile it as a module, say M here and read
1488
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1489

1490 1491 1492 1493 1494 1495 1496 1497 1498 1499
config NETFILTER_XT_MATCH_RECENT
	tristate '"recent" match support'
	depends on NETFILTER_ADVANCED
	---help---
	This match is used for creating one or many lists of recently
	used addresses and then matching against that/those list(s).

	Short options are available by using 'iptables -m recent -h'
	Official Website: <http://snowman.net/projects/ipt_recent/>

1500
config NETFILTER_XT_MATCH_SCTP
1501
	tristate  '"sctp" protocol match support'
1502
	depends on NETFILTER_ADVANCED
1503
	default IP_SCTP
1504 1505 1506 1507 1508 1509
	help
	  With this option enabled, you will be able to use the 
	  `sctp' match in order to match on SCTP source/destination ports
	  and SCTP chunk types.

	  If you want to compile it as a module, say M here and read
1510
	  <file:Documentation/kbuild/modules.txt>.  If unsure, say `N'.
1511

1512
config NETFILTER_XT_MATCH_SOCKET
1513
	tristate '"socket" match support'
1514 1515
	depends on NETFILTER_XTABLES
	depends on NETFILTER_ADVANCED
1516 1517
	depends on IPV6 || IPV6=n
	depends on IP6_NF_IPTABLES || IP6_NF_IPTABLES=n
1518 1519
	select NF_SOCKET_IPV4
	select NF_SOCKET_IPV6 if IP6_NF_IPTABLES
1520
	select NF_DEFRAG_IPV4
1521
	select NF_DEFRAG_IPV6 if IP6_NF_IPTABLES != n
1522 1523 1524 1525 1526 1527 1528 1529
	help
	  This option adds a `socket' match, which can be used to match
	  packets for which a TCP or UDP socket lookup finds a valid socket.
	  It can be used in combination with the MARK target and policy
	  routing to implement full featured non-locally bound sockets.

	  To compile it as a module, choose M here.  If unsure, say N.

1530 1531
config NETFILTER_XT_MATCH_STATE
	tristate '"state" match support'
1532
	depends on NF_CONNTRACK
1533
	default m if NETFILTER_ADVANCED=n
1534 1535 1536 1537 1538 1539 1540
	help
	  Connection state matching allows you to match packets based on their
	  relationship to a tracked connection (ie. previous packets).  This
	  is a powerful tool for packet classification.

	  To compile it as a module, choose M here.  If unsure, say N.

1541 1542
config NETFILTER_XT_MATCH_STATISTIC
	tristate '"statistic" match support'
1543
	depends on NETFILTER_ADVANCED
1544
	help
1545 1546 1547 1548
	  This option adds a `statistic' match, which allows you to match
	  on packets periodically or randomly with a given percentage.

	  To compile it as a module, choose M here.  If unsure, say N.
1549

1550 1551
config NETFILTER_XT_MATCH_STRING
	tristate  '"string" match support'
1552
	depends on NETFILTER_ADVANCED
1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564
	select TEXTSEARCH
	select TEXTSEARCH_KMP
	select TEXTSEARCH_BM
	select TEXTSEARCH_FSM
	help
	  This option adds a `string' match, which allows you to look for
	  pattern matchings in packets.

	  To compile it as a module, choose M here.  If unsure, say N.

config NETFILTER_XT_MATCH_TCPMSS
	tristate '"tcpmss" match support'
1565
	depends on NETFILTER_ADVANCED
1566 1567 1568 1569 1570 1571 1572
	help
	  This option adds a `tcpmss' match, which allows you to examine the
	  MSS value of TCP SYN packets, which control the maximum packet size
	  for that connection.

	  To compile it as a module, choose M here.  If unsure, say N.

1573 1574
config NETFILTER_XT_MATCH_TIME
	tristate '"time" match support'
1575
	depends on NETFILTER_ADVANCED
1576 1577 1578 1579 1580 1581 1582 1583 1584 1585 1586
	---help---
	  This option adds a "time" match, which allows you to match based on
	  the packet arrival time (at the machine which netfilter is running)
	  on) or departure time/date (for locally generated packets).

	  If you say Y here, try `iptables -m time --help` for
	  more information.

	  If you want to compile it as a module, say M here.
	  If unsure, say N.

J
Jan Engelhardt 已提交
1587 1588
config NETFILTER_XT_MATCH_U32
	tristate '"u32" match support'
1589
	depends on NETFILTER_ADVANCED
J
Jan Engelhardt 已提交
1590 1591 1592 1593 1594 1595 1596 1597 1598 1599
	---help---
	  u32 allows you to extract quantities of up to 4 bytes from a packet,
	  AND them with specified masks, shift them by specified amounts and
	  test whether the results are in any of a set of specified ranges.
	  The specification of what to extract is general enough to skip over
	  headers with lengths stored in the packet, as in IP or TCP header
	  lengths.

	  Details and examples are in the kernel module source.

1600
endif # NETFILTER_XTABLES
1601

1602
endmenu
1603

1604 1605
source "net/netfilter/ipset/Kconfig"

1606
source "net/netfilter/ipvs/Kconfig"