diff options
| author | Alin Nastac <alin.nastac@gmail.com> | 2017-06-16 14:16:07 +0200 |
|---|---|---|
| committer | Jo-Philipp Wich <jo@mein.io> | 2017-12-13 16:23:38 +0100 |
| commit | c86490605c5511e88093d3584dc9a277afcb9d6d (patch) | |
| tree | c5f2c75f096cb0de17954906739fd9ee1f8bd8ef | |
| parent | ea23ba9a250714302e9fc21bfc52293b3cddfddd (diff) | |
| download | upstream-c86490605c5511e88093d3584dc9a277afcb9d6d.tar.gz upstream-c86490605c5511e88093d3584dc9a277afcb9d6d.tar.bz2 upstream-c86490605c5511e88093d3584dc9a277afcb9d6d.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>
(cherry picked from commit d8748e537f11ab5f2b5e2ed25d94baa5ce353984)
| -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 c408ac68ca..ac1e1899c7 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 21547fe015..4b3e442237 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 ac869f0385..bf1a792c00 100644 --- a/package/network/utils/iptables/Makefile +++ b/package/network/utils/iptables/Makefile @@ -229,6 +229,19 @@ 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 @@ -543,6 +556,7 @@ $(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))) |