iamshiyu
求助，这段中的S，P，F标志，是指什么呢？
10:13:44.931257 IP 222.128.X.X.4460 > 211.154.X.X.1311: S 1877884100:1877884100(0) win 65535 <mss 1412,nop,nop,sackOK>
10:13:44.931288 IP 211.154.X.X.1311 > 222.128.X.X.4460: S 1802267199:1802267199(0) ack 1877884101 win 5840 <mss 1460>
10:13:47.932901 IP 222.128.X.X.4460 > 211.154.X.X.1311: P 1:404(403) ack 1 win 65535
10:13:47.932920 IP 211.154.X.X.1311 > 222.128.X.X.4460: . ack 404 win 6432
10:13:47.933659 IP 211.154.X.X.1311 > 222.128.X.X.4460: P 1:8(7) ack 404 win 6432
10:13:47.933674 IP 211.154.X.X.1311 > 222.128.X.X.4460: F 8:8(0) ack 404 win 6432
10:13:47.951039 IP 222.128.X.X.4460 > 211.154.X.X.1311: . ack 9 win 65528
10:13:47.955249 IP 222.128.X.X.4460 > 211.154.X.X.1311: F 404:404(0) ack 9 win 65528
10:13:47.955261 IP 211.154.X.X.1311 > 222.128.X.X.4460: . ack 405 win 6432
按说1311端口可以通过web访问的，但是我却无法通过1311端口获得登陆信息等有用的信息，这该怎么办好呢？能帮忙分析一下这段记录么？谢谢了。