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authorAlin Nastac <alin.nastac@gmail.com>2017-06-16 14:16:07 +0200
committerHans Dedecker <dedeckeh@gmail.com>2017-07-11 22:09:57 +0200
commitd8748e537f11ab5f2b5e2ed25d94baa5ce353984 (patch)
tree8cdc9cb604c2d5ddfbd208f004c42553a55549dc /package
parenta35a27e8ef05b6536cf12b2938488be499859b76 (diff)
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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>
Diffstat (limited to 'package')
-rw-r--r--package/kernel/linux/modules/netfilter.mk18
-rw-r--r--package/network/utils/iptables/Makefile14
2 files changed, 32 insertions, 0 deletions
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)))