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TCP ソケットが、SYN パケットに対して適切に応答しません

Solution In Progress - Updated -

Issue

TCP ソケットが SYN パケットに対して適切に応答しません。SYN を受け取っているソケットは TIME_WAIT です。

パケットキャプチャー:

4061    2013-02-01 09:00:55.423794  192.168.0.1 192.168.0.2 TCP https > 57063 [FIN, ACK] Seq=2695690986 Ack=2835306979 Win=16 Len=0
4066    2013-02-01 09:00:55.437233  192.168.0.2 192.168.0.1 TCP 57063 > https [ACK] Seq=2835306979 Ack=2695690986 Win=65535 Len=0
4067    2013-02-01 09:00:55.437246  192.168.0.2 192.168.0.1 TCP 57063 > https [ACK] Seq=2835306979 Ack=2695690987 Win=65535 Len=0
4070    2013-02-01 09:00:55.460917  192.168.0.2 192.168.0.1 TLSv1   Encrypted Alert
4071    2013-02-01 09:00:55.461793  192.168.0.2 192.168.0.1 TCP 57063 > https [FIN, ACK] Seq=2835307002 Ack=2695690987 Win=65535 Len=0
4072    2013-02-01 09:00:55.461804  192.168.0.1 192.168.0.2 TCP https > 57063 [ACK] Seq=2695690987 Ack=2835307003 Win=16 Len=0
7646    2013-02-01 09:01:18.514561  192.168.0.2 192.168.0.1 TCP [TCP Port numbers reused] 57063 > https [SYN] Seq=1290965798 Win=65535 Len=0 MSS=1460 WS=0 TSV=2220310211 TSER=0
7647    2013-02-01 09:01:18.514574  192.168.0.1 192.168.0.2 TCP [TCP ACKed lost segment] https > 57063 [ACK] Seq=2695690987 Ack=2835307003 Win=16 Len=0
7685    2013-02-01 09:01:21.470302  192.168.0.2 192.168.0.1 TCP 57063 > https [SYN] Seq=1290965798 Win=65535 Len=0 MSS=1460 WS=0 TSV=2220313171 TSER=0
7686    2013-02-01 09:01:21.470315  192.168.0.1 192.168.0.2 TCP [TCP Dup ACK 7647#1] https > 57063 [ACK] Seq=2695690987 Ack=2835307003 Win=16 Len=0

netstat:

Active Internet connections (servers and established)
Proto Recv-Q Send-Q Local Address               Foreign Address             State       PID/Program name   
:
tcp        0      0 192.168.0.1:443           0.0.0.0:*                 LISTEN      16669/httpd
:
tcp        0      0 192.168.0.1:443           192.168.0.2:57063         TIME_WAIT   -    

Environment

  • Red Hat Enterprise Linux 5

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