From 0cfb81560e2ff3f8f20cc6e835db33badf8eeabc Mon Sep 17 00:00:00 2001 From: Florian Eckert Date: Tue, 13 Aug 2024 08:04:55 +0200 Subject: [PATCH] netfilter: add nf_conntrack_netbios_ns to kmod-nf-nathelper-extra MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit NetBIOS name service requests are sent as broadcast messages from an unprivileged port and responded to with unicast messages to the same port. This make them hard to firewall properly because connection tracking doesn't deal with broadcasts. So let´s enable this in the kernel and add them to 'kmod-nf-nathelper-extra'. Signed-off-by: Florian Eckert --- include/netfilter.mk | 1 + 1 file changed, 1 insertion(+) diff --git a/include/netfilter.mk b/include/netfilter.mk index 7d1f03891b..5bc336eb44 100644 --- a/include/netfilter.mk +++ b/include/netfilter.mk @@ -207,6 +207,7 @@ $(eval $(call nf_add,NF_NATHELPER,CONFIG_NF_NAT_FTP, $(P_XT)nf_nat_ftp)) # nathelper-extra $(eval $(call nf_add,NF_NATHELPER_EXTRA,CONFIG_NF_CONNTRACK_BROADCAST, $(P_XT)nf_conntrack_broadcast)) +$(eval $(call nf_add,NF_NATHELPER_EXTRA,CONFIG_NF_CONNTRACK_NETBIOS_NS, $(P_XT)nf_conntrack_netbios_ns)) $(eval $(call nf_add,NF_NATHELPER_EXTRA,CONFIG_NF_CONNTRACK_AMANDA, $(P_XT)nf_conntrack_amanda)) $(eval $(call nf_add,NF_NATHELPER_EXTRA,CONFIG_NF_NAT_AMANDA, $(P_XT)nf_nat_amanda)) $(eval $(call nf_add,NF_NATHELPER_EXTRA,CONFIG_NF_CONNTRACK_H323, $(P_XT)nf_conntrack_h323)) -- 2.30.2