# SPDX-License-Identifier: GPL-2.0-only
#
# IP netfilter configuration
#
menu "IPv6: Netfilter Configuration"
depends on INET && IPV6 && NETFILTER
config NF_SOCKET_IPV6
tristate "IPv6 socket lookup support"
help
This option enables the IPv6 socket lookup infrastructure. This
is used by the {ip6,nf}tables socket match.
config NF_TPROXY_IPV6
tristate "IPv6 tproxy support"
if NF_TABLES
config NF_TABLES_IPV6
bool "IPv6 nf_tables support"
help
This option enables the IPv6 support for nf_tables.
if NF_TABLES_IPV6
config NFT_REJECT_IPV6
select NF_REJECT_IPV6
default NFT_REJECT
tristate
config NFT_DUP_IPV6
tristate "IPv6 nf_tables packet duplication support"
depends on !NF_CONNTRACK || NF_CONNTRACK
select NF_DUP_IPV6
help
This module enables IPv6 packet duplication support for nf_tables.
config NFT_FIB_IPV6
tristate "nf_tables fib / ipv6 route lookup support"
select NFT_FIB
help
This module enables IPv6 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_IPV6
endif # NF_TABLES
config NF_DUP_IPV6
tristate "Netfilter IPv6 packet duplication to alternate destination"
depends on !NF_CONNTRACK || NF_CONNTRACK
help
This option enables the nf_dup_ipv6 core, which duplicates an IPv6
packet to be rerouted to another destination.
config NF_REJECT_IPV6
tristate "IPv6 packet rejection"
default m if NETFILTER_ADVANCED=n
config NF_LOG_IPV6
tristate "IPv6 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 IP6_NF_IPTABLES
tristate "IP6 tables support (required for filtering)"
depends on INET && IPV6
select NETFILTER_XTABLES
default m if NETFILTER_ADVANCED=n
help
ip6tables is a general, extensible packet identification framework.
Currently only the packet filtering and packet mangling subsystem
for IPv6 use this, but connection tracking is going to follow.
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 IP6_NF_IPTABLES
# The simple matches.
config IP6_NF_MATCH_AH
tristate '"ah" match support'
depends on NETFILTER_ADVANCED
help
This module allows one to match AH packets.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_EUI64
tristate '"eui64" address check'
depends on NETFILTER_ADVANCED
help
This module performs checking on the IPv6 source address
Compares the last 64 bits with the EUI64 (delivered
from the MAC address) address
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_FRAG
tristate '"frag" Fragmentation header match support'
depends on NETFILTER_ADVANCED
help
frag matching allows you to match packets based on the fragmentation
header of the packet.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_OPTS
tristate '"hbh" hop-by-hop and "dst" opts header match support'
depends on NETFILTER_ADVANCED
help
This allows one to match packets based on the hop-by-hop
and destination options headers of a packet.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_HL
tristate '"hl" hoplimit 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.
config IP6_NF_MATCH_IPV6HEADER
tristate '"ipv6header" IPv6 Extension Headers Match'
default m if NETFILTER_ADVANCED=n
help
This module allows one to match packets based upon
the ipv6 extension headers.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_MH
tristate '"mh" match support'
depends on NETFILTER_ADVANCED
help
This module allows one to match MH packets.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_RPFILTER
tristate '"rpfilter" reverse path filter match support'
depends on NETFILTER_ADVANCED
depends on IP6_NF_MANGLE || IP6_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 ip6t_rpfilter.
config IP6_NF_MATCH_RT
tristate '"rt" Routing header match support'
depends on NETFILTER_ADVANCED
help
rt matching allows you to match packets based on the routing
header of the packet.
To compile it as a module, choose M here. If unsure, say N.
config IP6_NF_MATCH_SRH
tristate '"srh" Segment Routing header match support'
depends on NETFILTER_ADVANCED
help
srh matching allows you to match packets based on the segment
routing header of the packet.
To compile it as a module, choose M here. If unsure, say N.
# The targets
config IP6_NF_TARGET_HL
tristate '"HL" hoplimit target support'
depends on NETFILTER_ADVANCED && IP6_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.
config IP6_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 IP6_NF_TARGET_REJECT
tristate "REJECT target support"
depends on IP6_NF_FILTER
select NF_REJECT_IPV6
default m if NETFILTER_ADVANCED=n
help
The REJECT target allows a filtering rule to specify that an ICMPv6
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 IP6_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.
config IP6_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 IP6_NF_RAW
tristate 'raw table support (required for TRACE)'
help
This option adds a `raw' table to ip6tables. 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 IP6_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.
config IP6_NF_NAT
tristate "ip6tables NAT support"
depends on NF_CONNTRACK
depends on NETFILTER_ADVANCED
select NF_NAT
select NETFILTER_XT_NAT
help
This enables the `nat' table in ip6tables. 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 IP6_NF_NAT
config IP6_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 IP6_NF_TARGET_NPT
tristate "NPT (Network Prefix translation) target support"
help
This option adds the `SNPT' and `DNPT' target, which perform
stateless IPv6-to-IPv6 Network Prefix Translation per RFC 6296.
To compile it as a module, choose M here. If unsure, say N.
endif # IP6_NF_NAT
endif # IP6_NF_IPTABLES
endmenu
config NF_DEFRAG_IPV6
tristate