这是netsat -tupn我的 Debian Jessie 服务器上的输出：
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program name
tcp 0 0 10.0.0.12:445 10.0.0.20:49729 ESTABLISHED 26277/smbd
tcp 0 0 10.0.0.12:443 10.0.0.21:44162 ESTABLISHED 1400/nginx: worker
tcp 0 0 10.0.0.12:445 10.0.0.21:46650 ESTABLISHED 23039/smbd
tcp 0 0 10.0.0.12:443 10.0.0.20:54584 ESTABLISHED 1400/nginx: worker
tcp 0 0 10.0.0.12:139 10.0.0.225:10425 ESTABLISHED 23701/smbd
tcp 0 0 10.0.0.12:445 10.0.0.217:49179 ESTABLISHED 21535/smbd
tcp 0 0 10.0.0.12:445 10.0.0.217:49178 ESTABLISHED 21534/smbd
tcp 0 0 10.0.0.12:445 10.0.0.20:64636 ESTABLISHED 21470/smbd …