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| author | Alin Nastac <alin.nastac@gmail.com> | 2017-06-16 14:16:07 +0200 |
|---|---|---|
| committer | Hans Dedecker <dedeckeh@gmail.com> | 2017-07-11 22:09:57 +0200 |
| commit | d8748e537f11ab5f2b5e2ed25d94baa5ce353984 (patch) | |
| tree | 8cdc9cb604c2d5ddfbd208f004c42553a55549dc | |
| parent | a35a27e8ef05b6536cf12b2938488be499859b76 (diff) | |
| download | upstream-d8748e537f11ab5f2b5e2ed25d94baa5ce353984.tar.gz upstream-d8748e537f11ab5f2b5e2ed25d94baa5ce353984.tar.bz2 upstream-d8748e537f11ab5f2b5e2ed25d94baa5ce353984.zip | |
netfilter: add iptables-mod-rpfilter package
Unlike /proc/sys/net/ipv4/conf/INTF/rp_filter flag, rule iptables -t raw
-I PREROUTING -m rpfilter --invert -j DROP prevents conntrack table to
become full when a packet flood with randomly selected source IP addresses
is received from the lan side.
Signed-off-by: Alin Nastac <alin.nastac@gmail.com>
| -rw-r--r-- | include/netfilter.mk | 2 | ||||
| -rw-r--r-- | package/kernel/linux/modules/netfilter.mk | 18 | ||||
| -rw-r--r-- | package/network/utils/iptables/Makefile | 14 |
3 files changed, 34 insertions, 0 deletions
diff --git a/include/netfilter.mk b/include/netfilter.mk index 2cd3edbfe5..2d537583bd 100644 --- a/include/netfilter.mk +++ b/include/netfilter.mk @@ -106,6 +106,8 @@ $(eval $(call nf_add,IPT_FILTER,CONFIG_NETFILTER_XT_MATCH_STRING, $(P_XT)xt_stri $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_DSCP, $(P_XT)xt_dscp)) $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_TARGET_DSCP, $(P_XT)xt_DSCP)) $(eval $(call nf_add,IPT_HASHLIMIT,CONFIG_NETFILTER_XT_MATCH_HASHLIMIT, $(P_XT)xt_hashlimit)) +$(eval $(call nf_add,IPT_RPFILTER,CONFIG_IP_NF_MATCH_RPFILTER, $(P_V4)ipt_rpfilter)) +$(eval $(call nf_add,IPT_RPFILTER,CONFIG_IP6_NF_MATCH_RPFILTER, $(P_V6)ip6t_rpfilter)) $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_LENGTH, $(P_XT)xt_length)) $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_STATISTIC, $(P_XT)xt_statistic)) $(eval $(call nf_add,IPT_IPOPT,CONFIG_NETFILTER_XT_MATCH_TCPMSS, $(P_XT)xt_tcpmss)) diff --git a/package/kernel/linux/modules/netfilter.mk b/package/kernel/linux/modules/netfilter.mk index 6162dbc362..a34a9e4207 100644 --- a/package/kernel/linux/modules/netfilter.mk +++ b/package/kernel/linux/modules/netfilter.mk @@ -836,6 +836,24 @@ endef $(eval $(call KernelPackage,ipt-hashlimit)) +define KernelPackage/ipt-rpfilter + SUBMENU:=$(NF_MENU) + TITLE:=Netfilter rpfilter match + DEPENDS:=+kmod-ipt-core + KCONFIG:=$(KCONFIG_IPT_RPFILTER) + FILES:=$(realpath \ + $(LINUX_DIR)/net/ipv4/netfilter/ipt_rpfilter.ko \ + $(LINUX_DIR)/net/ipv6/netfilter/ip6t_rpfilter.ko) + AUTOLOAD:=$(call AutoProbe,ipt_rpfilter ip6t_rpfilter) + $(call KernelPackage/ipt) +endef + +define KernelPackage/ipt-rpfilter/description + Kernel modules support for the Netfilter rpfilter match +endef + +$(eval $(call KernelPackage,ipt-rpfilter)) + define KernelPackage/nft-core SUBMENU:=$(NF_MENU) diff --git a/package/network/utils/iptables/Makefile b/package/network/utils/iptables/Makefile index ca8b1976aa..89f4354d07 100644 --- a/package/network/utils/iptables/Makefile +++ b/package/network/utils/iptables/Makefile @@ -242,6 +242,19 @@ iptables extensions for hashlimit matching endef +define Package/iptables-mod-rpfilter +$(call Package/iptables/Module, +kmod-ipt-rpfilter) + TITLE:=rpfilter iptables extension +endef + +define Package/iptables-mod-rpfilter/description +iptables extensions for reverse path filter test on a packet + + Matches: + - rpfilter + +endef + define Package/iptables-mod-iprange $(call Package/iptables/Module, +kmod-ipt-iprange) TITLE:=IP range extension @@ -565,6 +578,7 @@ $(eval $(call BuildPlugin,iptables-mod-cluster,$(IPT_CLUSTER-m))) $(eval $(call BuildPlugin,iptables-mod-clusterip,$(IPT_CLUSTERIP-m))) $(eval $(call BuildPlugin,iptables-mod-ulog,$(IPT_ULOG-m))) $(eval $(call BuildPlugin,iptables-mod-hashlimit,$(IPT_HASHLIMIT-m))) +$(eval $(call BuildPlugin,iptables-mod-rpfilter,$(IPT_RPFILTER-m))) $(eval $(call BuildPlugin,iptables-mod-led,$(IPT_LED-m))) $(eval $(call BuildPlugin,iptables-mod-tproxy,$(IPT_TPROXY-m))) $(eval $(call BuildPlugin,iptables-mod-tee,$(IPT_TEE-m))) |