| # 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 |
| |
