14:51:00.024418 IP 192.168.122.1.41462 > netfilter.90: Flags [S], seq
4023580551, win 64240, options [mss 1460,sackOK,TS val 2149563785 ecr
0,nop,wscale 7], length 0
14:51:00.024454 IP netfilter.90 > 192.168.122.1.41462: Flags [S.], seq
727560212, ack 4023580552, win 0, options [mss 1460,sackOK,TS val 355031 ecr
2149563785,nop,wscale 7], length 0
14:51:00.024524 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1, win
502, options [nop,nop,TS val 2149563785 ecr 355031], length 0
14:51:00.024550 IP netfilter.90 > 192.168.122.1.41462: Flags [R.], seq
3567407084, ack 1, win 0, length 0
14:51:00.231196 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1, win
502, options [nop,nop,TS val 2149563992 ecr 355031], length 0
14:51:00.647911 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1, win
502, options [nop,nop,TS val 2149564408 ecr 355031], length 0
14:51:01.474395 IP 192.168.122.1.41462 > netfilter.90: Flags [.], ack 1, win
502, options [nop,nop,TS val 2149565235 ecr 355031], length 0
Fixes: 48b1de4c110a ("netfilter: add SYNPROXY core/target")
Signed-off-by: Fernando Fernandez Mancera <ffmancera@xxxxxxxxxx>
---
net/netfilter/nf_synproxy_core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/nf_synproxy_core.c b/net/netfilter/nf_synproxy_core.c
index 6676a3842a0c..b0930d4aba22 100644
--- a/net/netfilter/nf_synproxy_core.c
+++ b/net/netfilter/nf_synproxy_core.c
@@ -687,7 +687,7 @@ ipv4_synproxy_hook(void *priv, struct sk_buff *skb,
state = &ct->proto.tcp;
switch (state->state) {
case TCP_CONNTRACK_CLOSE:
- if (th->rst && !test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
+ if (th->rst && CTINFO2DIR(ctinfo) != IP_CT_DIR_ORIGINAL) {
nf_ct_seqadj_init(ct, ctinfo, synproxy->isn -
ntohl(th->seq) + 1);
break;
@@ -1111,7 +1111,7 @@ ipv6_synproxy_hook(void *priv, struct sk_buff *skb,
state = &ct->proto.tcp;
switch (state->state) {
case TCP_CONNTRACK_CLOSE:
- if (th->rst && !test_bit(IPS_SEEN_REPLY_BIT, &ct->status)) {
+ if (th->rst && CTINFO2DIR(ctinfo) != IP_CT_DIR_ORIGINAL) {
nf_ct_seqadj_init(ct, ctinfo, synproxy->isn -
ntohl(th->seq) + 1);
break;
--
2.20.1
