* [PATCH nf] netfilter: nftables: onlly allow in/output for arp packets
@ 2017-07-07 11:29 Florian Westphal
2017-07-17 15:08 ` Pablo Neira Ayuso
0 siblings, 1 reply; 2+ messages in thread
From: Florian Westphal @ 2017-07-07 11:29 UTC (permalink / raw)
To: netfilter-devel; +Cc: Florian Westphal
arp packets cannot be forwarded.
They can be bridged, but then they can be filtered using
either ebtables or nftables bridge family.
The bridge netfilter exposes a "call-arptables" switch which
pushes packets into arptables, but lets not expose this for nftables, so better
close this asap.
Signed-off-by: Florian Westphal <fw@strlen.de>
---
net/ipv4/netfilter/nf_tables_arp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/net/ipv4/netfilter/nf_tables_arp.c b/net/ipv4/netfilter/nf_tables_arp.c
index 805c8dd..4bbc273 100644
--- a/net/ipv4/netfilter/nf_tables_arp.c
+++ b/net/ipv4/netfilter/nf_tables_arp.c
@@ -72,8 +72,7 @@ static const struct nf_chain_type filter_arp = {
.family = NFPROTO_ARP,
.owner = THIS_MODULE,
.hook_mask = (1 << NF_ARP_IN) |
- (1 << NF_ARP_OUT) |
- (1 << NF_ARP_FORWARD),
+ (1 << NF_ARP_OUT),
};
static int __init nf_tables_arp_init(void)
--
2.9.4
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2017-07-07 11:29 [PATCH nf] netfilter: nftables: onlly allow in/output for arp packets Florian Westphal
2017-07-17 15:08 ` Pablo Neira Ayuso
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