menu "IP: Netfilter Configuration"
depends on INET && NETFILTER
+# connection tracking, helpers and protocols
config IP_NF_CONNTRACK
tristate "Connection tracking (required for masq/NAT)"
---help---
To compile it as a module, choose M here. If unsure, say N.
+config IP_NF_CT_ACCT
+ bool "Connection tracking flow accounting"
+ depends on IP_NF_CONNTRACK
+ help
+ If this option is enabled, the connection tracking code will
+ keep per-flow packet and byte counters.
+
+ Those counters can be used for flow-based accounting or the
+ `connbytes' match.
+
+ If unsure, say `N'.
+
+config IP_NF_CT_PROTO_SCTP
+ tristate 'SCTP protocol connection tracking support (EXPERIMENTAL)'
+ depends on IP_NF_CONNTRACK && EXPERIMENTAL
+ help
+ With this option enabled, the connection tracking code will
+ be able to do state tracking on SCTP connections.
+
+ If you want to compile it as a module, say M here and read
+ Documentation/modules.txt. If unsure, say `N'.
+
config IP_NF_FTP
tristate "FTP protocol support"
depends on IP_NF_CONNTRACK
To compile it as a module, choose M here. If unsure, say N.
-# The simple matches.
+# The matches.
config IP_NF_MATCH_LIMIT
tristate "limit match support"
depends on IP_NF_IPTABLES
To compile it as a module, choose M here. If unsure, say N.
-# The targets
+config IP_NF_MATCH_ADDRTYPE
+ tristate 'address type match support'
+ depends on IP_NF_IPTABLES
+ 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
+ Documentation/modules.txt. If unsure, say `N'.
+
+config IP_NF_MATCH_REALM
+ tristate 'realm match support'
+ depends on IP_NF_IPTABLES
+ select NET_CLS_ROUTE
+ help
+ This option adds a `realm' match, which allows you to use the realm
+ key from the routing subsytem inside iptables.
+
+ This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option
+ in tc world.
+
+ If you want to compile it as a module, say M here and read
+ Documentation/modules.txt. If unsure, say `N'.
+
+config IP_NF_MATCH_SCTP
+ tristate 'SCTP protocol match support'
+ depends on IP_NF_IPTABLES
+ help
+ With this option enabled, you will be able to use the iptables
+ `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
+ Documentation/modules.txt. If unsure, say `N'.
+
+config IP_NF_MATCH_COMMENT
+ tristate 'comment match support'
+ depends on IP_NF_IPTABLES
+ 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
+ Documentation/modules.txt. If unsure, say `N'.
+
+# `filter', generic and specific targets
config IP_NF_FILTER
tristate "Packet filtering"
depends on IP_NF_IPTABLES
To compile it as a module, choose M here. If unsure, say N.
+config IP_NF_TARGET_LOG
+ tristate "LOG target support"
+ depends on IP_NF_IPTABLES
+ 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.
+
+config IP_NF_TARGET_ULOG
+ tristate "ULOG target support"
+ depends on IP_NF_IPTABLES
+ ---help---
+ This option adds a `ULOG' target, which allows you to create rules in
+ any iptables table. The packet is passed to a userspace logging
+ daemon using netlink multicast sockets; unlike the LOG target
+ which can only be viewed through syslog.
+
+ The apropriate userspace logging daemon (ulogd) may be obtained from
+ <http://www.gnumonks.org/projects/ulogd/>
+
+ To compile it as a module, choose M here. If unsure, say N.
+
+config IP_NF_TARGET_TCPMSS
+ tristate "TCPMSS target support"
+ depends on IP_NF_IPTABLES
+ ---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.
+
+# NAT + specific targets
config IP_NF_NAT
tristate "Full NAT"
depends on IP_NF_IPTABLES && IP_NF_CONNTRACK
default IP_NF_NAT if IP_NF_AMANDA=y
default m if IP_NF_AMANDA=m
+# mangle + specific targets
config IP_NF_MANGLE
tristate "Packet mangling"
depends on IP_NF_IPTABLES
To compile it as a module, choose M here. If unsure, say N.
-config IP_NF_TARGET_LOG
- tristate "LOG target support"
+# raw + specific targets
+config IP_NF_RAW
+ tristate 'raw table support (required for NOTRACK/TRACE)'
depends on IP_NF_IPTABLES
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.
-
-config IP_NF_TARGET_ULOG
- tristate "ULOG target support"
- depends on IP_NF_IPTABLES
- ---help---
- This option adds a `ULOG' target, which allows you to create rules in
- any iptables table. The packet is passed to a userspace logging
- daemon using netlink multicast sockets; unlike the LOG target
- which can only be viewed through syslog.
-
- The apropriate userspace logging daemon (ulogd) may be obtained from
- <http://www.gnumonks.org/projects/ulogd/>
-
- To compile it as a module, choose M here. If unsure, say N.
-
-config IP_NF_TARGET_TCPMSS
- tristate "TCPMSS target support"
- depends on IP_NF_IPTABLES
- ---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:
+ This option adds a `raw' table to iptables. This table is the very
+ first in the netfilter framework and hooks in at the PREROUTING
+ and OUTPUT chains.
+
+ If you want to compile it as a module, say M here and read
+ <file:Documentation/modules.txt>. If unsure, say `N'.
+ help
- iptables -A FORWARD -p tcp --tcp-flags SYN,RST SYN \
- -j TCPMSS --clamp-mss-to-pmtu
+config IP_NF_TARGET_NOTRACK
+ tristate 'NOTRACK target support'
+ depends on IP_NF_RAW
+ depends on IP_NF_CONNTRACK
+ help
+ The NOTRACK target allows a select rule to specify
+ which packets *not* to enter the conntrack/NAT
+ subsystem with all the consequences (no ICMP error tracking,
+ no protocol helpers for the selected packets).
+
+ If you want to compile it as a module, say M here and read
+ <file:Documentation/modules.txt>. If unsure, say `N'.
- To compile it as a module, choose M here. If unsure, say N.
+# ARP tables
config IP_NF_ARPTABLES
tristate "ARP tables support"
help
To compile it as a module, choose M here. If unsure, say N.
-config IP_NF_TARGET_NOTRACK
- tristate 'NOTRACK target support'
- depends on IP_NF_RAW
- depends on IP_NF_CONNTRACK
- help
- The NOTRACK target allows a select rule to specify
- which packets *not* to enter the conntrack/NAT
- subsystem with all the consequences (no ICMP error tracking,
- no protocol helpers for the selected packets).
-
- If you want to compile it as a module, say M here and read
- <file:Documentation/modules.txt>. If unsure, say `N'.
-
-config IP_NF_RAW
- tristate 'raw table support (required for NOTRACK/TRACE)'
- depends on IP_NF_IPTABLES
- help
- This option adds a `raw' table to iptables. This table is the very
- first in the netfilter framework and hooks in at the PREROUTING
- and OUTPUT chains.
-
- If you want to compile it as a module, say M here and read
- <file:Documentation/modules.txt>. If unsure, say `N'.
- help
-
-config IP_NF_MATCH_ADDRTYPE
- tristate 'address type match support'
- depends on IP_NF_IPTABLES
- 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
- Documentation/modules.txt. If unsure, say `N'.
-
-config IP_NF_MATCH_REALM
- tristate 'realm match support'
- depends on IP_NF_IPTABLES
- select NET_CLS_ROUTE
- help
- This option adds a `realm' match, which allows you to use the realm
- key from the routing subsytem inside iptables.
-
- This match pretty much resembles the CONFIG_NET_CLS_ROUTE4 option
- in tc world.
-
- If you want to compile it as a module, say M here and read
- Documentation/modules.txt. If unsure, say `N'.
-
endmenu
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