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Diffstat (limited to 'net/ipv4/netfilter/Kconfig')
| -rw-r--r-- | net/ipv4/netfilter/Kconfig | 358 |
1 files changed, 358 insertions, 0 deletions
diff --git a/net/ipv4/netfilter/Kconfig b/net/ipv4/netfilter/Kconfig new file mode 100644 index 000000000..aab384126 --- /dev/null +++ b/net/ipv4/netfilter/Kconfig @@ -0,0 +1,358 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# IP netfilter configuration +# + +menu "IP: Netfilter Configuration" + depends on INET && NETFILTER + +config NF_DEFRAG_IPV4 + tristate + default n + +config NF_SOCKET_IPV4 + tristate "IPv4 socket lookup support" + help + This option enables the IPv4 socket lookup infrastructure. This is + is required by the {ip,nf}tables socket match. + +config NF_TPROXY_IPV4 + tristate "IPv4 tproxy support" + +if NF_TABLES + +config NF_TABLES_IPV4 + bool "IPv4 nf_tables support" + help + This option enables the IPv4 support for nf_tables. + +if NF_TABLES_IPV4 + +config NFT_REJECT_IPV4 + select NF_REJECT_IPV4 + default NFT_REJECT + tristate + +config NFT_DUP_IPV4 + tristate "IPv4 nf_tables packet duplication support" + depends on !NF_CONNTRACK || NF_CONNTRACK + select NF_DUP_IPV4 + help + This module enables IPv4 packet duplication support for nf_tables. + +config NFT_FIB_IPV4 + select NFT_FIB + tristate "nf_tables fib / ip route lookup support" + help + This module enables IPv4 FIB lookups, e.g. for reverse path filtering. + It also allows query of the FIB for the route type, e.g. local, unicast, + multicast or blackhole. + +endif # NF_TABLES_IPV4 + +config NF_TABLES_ARP + bool "ARP nf_tables support" + select NETFILTER_FAMILY_ARP + help + This option enables the ARP support for nf_tables. + +endif # NF_TABLES + +config NF_DUP_IPV4 + tristate "Netfilter IPv4 packet duplication to alternate destination" + depends on !NF_CONNTRACK || NF_CONNTRACK + help + This option enables the nf_dup_ipv4 core, which duplicates an IPv4 + packet to be rerouted to another destination. + +config NF_LOG_ARP + tristate "ARP packet logging" + default m if NETFILTER_ADVANCED=n + select NF_LOG_SYSLOG + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects CONFIG_NF_LOG_SYSLOG. + +config NF_LOG_IPV4 + tristate "IPv4 packet logging" + default m if NETFILTER_ADVANCED=n + select NF_LOG_SYSLOG + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects CONFIG_NF_LOG_SYSLOG. + +config NF_REJECT_IPV4 + tristate "IPv4 packet rejection" + default m if NETFILTER_ADVANCED=n + +if NF_NAT +config NF_NAT_SNMP_BASIC + tristate "Basic SNMP-ALG support" + depends on NF_CONNTRACK_SNMP + depends on NETFILTER_ADVANCED + default NF_NAT && NF_CONNTRACK_SNMP + select ASN1 + help + + This module implements an Application Layer Gateway (ALG) for + SNMP payloads. In conjunction with NAT, it allows a network + management system to access multiple private networks with + conflicting addresses. It works by modifying IP addresses + inside SNMP payloads to match IP-layer NAT mapping. + + This is the "basic" form of SNMP-ALG, as described in RFC 2962 + + To compile it as a module, choose M here. If unsure, say N. + +config NF_NAT_PPTP + tristate + depends on NF_CONNTRACK + default NF_CONNTRACK_PPTP + +config NF_NAT_H323 + tristate + depends on NF_CONNTRACK + default NF_CONNTRACK_H323 + +endif # NF_NAT + +config IP_NF_IPTABLES + tristate "IP tables support (required for filtering/masq/NAT)" + default m if NETFILTER_ADVANCED=n + select NETFILTER_XTABLES + help + iptables is a general, extensible packet identification framework. + The packet filtering and full NAT (masquerading, port forwarding, + etc) subsystems now use this: say `Y' or `M' here if you want to use + either of those. + + To compile it as a module, choose M here. If unsure, say N. + +if IP_NF_IPTABLES + +# The matches. +config IP_NF_MATCH_AH + tristate '"ah" match support' + depends on NETFILTER_ADVANCED + help + This match extension allows you to match a range of SPIs + inside AH header of IPSec packets. + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_MATCH_ECN + tristate '"ecn" match support' + depends on NETFILTER_ADVANCED + select NETFILTER_XT_MATCH_ECN + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects + CONFIG_NETFILTER_XT_MATCH_ECN. + +config IP_NF_MATCH_RPFILTER + tristate '"rpfilter" reverse path filter match support' + depends on NETFILTER_ADVANCED + depends on IP_NF_MANGLE || IP_NF_RAW + help + This option allows you to match packets whose replies would + go out via the interface the packet came in. + + To compile it as a module, choose M here. If unsure, say N. + The module will be called ipt_rpfilter. + +config IP_NF_MATCH_TTL + tristate '"ttl" match support' + depends on NETFILTER_ADVANCED + select NETFILTER_XT_MATCH_HL + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects + CONFIG_NETFILTER_XT_MATCH_HL. + +# `filter', generic and specific targets +config IP_NF_FILTER + tristate "Packet filtering" + default m if NETFILTER_ADVANCED=n + help + Packet filtering defines a table `filter', which has a series of + rules for simple packet filtering at local input, forwarding and + local output. See the man page for iptables(8). + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_TARGET_REJECT + tristate "REJECT target support" + depends on IP_NF_FILTER + select NF_REJECT_IPV4 + default m if NETFILTER_ADVANCED=n + help + The REJECT target allows a filtering rule to specify that an ICMP + error should be issued in response to an incoming packet, rather + than silently being dropped. + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_TARGET_SYNPROXY + tristate "SYNPROXY target support" + depends on NF_CONNTRACK && NETFILTER_ADVANCED + select NETFILTER_SYNPROXY + select SYN_COOKIES + help + The SYNPROXY target allows you to intercept TCP connections and + establish them using syncookies before they are passed on to the + server. This allows to avoid conntrack and server resource usage + during SYN-flood attacks. + + To compile it as a module, choose M here. If unsure, say N. + +# NAT + specific targets: nf_conntrack +config IP_NF_NAT + tristate "iptables NAT support" + depends on NF_CONNTRACK + default m if NETFILTER_ADVANCED=n + select NF_NAT + select NETFILTER_XT_NAT + help + This enables the `nat' table in iptables. This allows masquerading, + port forwarding and other forms of full Network Address Port + Translation. + + To compile it as a module, choose M here. If unsure, say N. + +if IP_NF_NAT + +config IP_NF_TARGET_MASQUERADE + tristate "MASQUERADE target support" + select NETFILTER_XT_TARGET_MASQUERADE + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects NETFILTER_XT_TARGET_MASQUERADE. + +config IP_NF_TARGET_NETMAP + tristate "NETMAP target support" + depends on NETFILTER_ADVANCED + select NETFILTER_XT_TARGET_NETMAP + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects + CONFIG_NETFILTER_XT_TARGET_NETMAP. + +config IP_NF_TARGET_REDIRECT + tristate "REDIRECT target support" + depends on NETFILTER_ADVANCED + select NETFILTER_XT_TARGET_REDIRECT + help + This is a backwards-compat option for the user's convenience + (e.g. when running oldconfig). It selects + CONFIG_NETFILTER_XT_TARGET_REDIRECT. + +endif # IP_NF_NAT + +# mangle + specific targets +config IP_NF_MANGLE + tristate "Packet mangling" + default m if NETFILTER_ADVANCED=n + help + This option adds a `mangle' table to iptables: see the man page for + iptables(8). This table is used for various packet alterations + which can effect how the packet is routed. + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_TARGET_CLUSTERIP + tristate "CLUSTERIP target support" + depends on IP_NF_MANGLE + depends on NF_CONNTRACK + depends on NETFILTER_ADVANCED + select NF_CONNTRACK_MARK + select NETFILTER_FAMILY_ARP + help + The CLUSTERIP target allows you to build load-balancing clusters of + network servers without having a dedicated load-balancing + router/server/switch. + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_TARGET_ECN + tristate "ECN target support" + depends on IP_NF_MANGLE + depends on NETFILTER_ADVANCED + help + This option adds a `ECN' target, which can be used in the iptables mangle + table. + + You can use this target to remove the ECN bits from the IPv4 header of + an IP packet. This is particularly useful, if you need to work around + existing ECN blackholes on the internet, but don't want to disable + ECN support in general. + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_TARGET_TTL + tristate '"TTL" target support' + depends on NETFILTER_ADVANCED && IP_NF_MANGLE + select NETFILTER_XT_TARGET_HL + help + This is a backwards-compatible option for the user's convenience + (e.g. when running oldconfig). It selects + CONFIG_NETFILTER_XT_TARGET_HL. + +# raw + specific targets +config IP_NF_RAW + tristate 'raw table support (required for NOTRACK/TRACE)' + 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/kbuild/modules.rst>. If unsure, say `N'. + +# security table for MAC policy +config IP_NF_SECURITY + tristate "Security table" + depends on SECURITY + depends on NETFILTER_ADVANCED + help + This option adds a `security' table to iptables, for use + with Mandatory Access Control (MAC) policy. + + If unsure, say N. + +endif # IP_NF_IPTABLES + +# ARP tables +config IP_NF_ARPTABLES + tristate "ARP tables support" + select NETFILTER_XTABLES + select NETFILTER_FAMILY_ARP + depends on NETFILTER_ADVANCED + help + arptables is a general, extensible packet identification framework. + The ARP packet filtering and mangling (manipulation)subsystems + use this: say Y or M here if you want to use either of those. + + To compile it as a module, choose M here. If unsure, say N. + +if IP_NF_ARPTABLES + +config IP_NF_ARPFILTER + tristate "ARP packet filtering" + help + ARP packet filtering defines a table `filter', which has a series of + rules for simple ARP packet filtering at local input and + local output. On a bridge, you can also specify filtering rules + for forwarded ARP packets. See the man page for arptables(8). + + To compile it as a module, choose M here. If unsure, say N. + +config IP_NF_ARP_MANGLE + tristate "ARP payload mangling" + help + Allows altering the ARP packet payload: source and destination + hardware and network addresses. + +endif # IP_NF_ARPTABLES + +endmenu + |