diff options
Diffstat (limited to 'sys/netinet/tcp_input.c')
| -rw-r--r-- | sys/netinet/tcp_input.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/netinet/tcp_input.c b/sys/netinet/tcp_input.c index a7bed762f49f..15e5afffc48f 100644 --- a/sys/netinet/tcp_input.c +++ b/sys/netinet/tcp_input.c @@ -2011,8 +2011,10 @@ tcp_do_segment(struct mbuf *m, struct tcphdr *th, struct socket *so, /* * If the state is SYN_SENT: - * if seg contains a RST, then drop the connection. - * if seg does not contain SYN, then drop it. + * if seg contains a RST with valid ACK (SEQ.ACK has already + * been verified), then drop the connection. + * if seg contains a RST without an ACK, drop the seg. + * if seg does not contain SYN, then drop the seg. * Otherwise this is an acceptable SYN segment * initialize tp->rcv_nxt and tp->irs * if seg contains ack then advance tp->snd_una |