tcpdump发现太多如下信息

minminmsn

tcpdump发现太多如下信息，不知道什么意思？
tcpdump -i eth1 |grep 192.168.1.200
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth1, link-type EN10MB (Ethernet), capture size 96 bytes
11:55:19.737709 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 2594268526 win 63325
11:55:19.906609 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 0:106(106) ack 1 win 63325
11:55:19.907097 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 106:182(76) ack 140 win 63186
11:55:19.907492 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 182:258(76) ack 244 win 63082
11:55:19.907932 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 258:334(76) ack 332 win 62994
11:55:19.908205 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 334:379(45) ack 400 win 62926
11:55:19.946278 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 494 win 62832
11:55:19.946454 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 379:424(45) ack 494 win 62832
11:55:19.956634 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 588 win 64240
11:55:19.956766 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 424:469(45) ack 588 win 64240
11:55:20.098259 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 627 win 64201
11:55:20.192296 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 469:619(150) ack 627 win 64201
11:55:20.192736 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 619:769(150) ack 731 win 64097
11:55:20.193944 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 769:921(152) ack 851 win 63977
11:55:20.194305 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 921:1073(152) ack 955 win 63873
11:55:20.393984 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 1075 win 63753
11:55:20.403176 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1073:1223(150) ack 1075 win 63753
11:55:20.403559 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1223:1373(150) ack 1179 win 63649
11:55:20.404144 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1373:1533(160) ack 1299 win 63529
11:55:20.405041 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1533:1609(76) ack 1438 win 63390
11:55:20.405439 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1609:1672(63) ack 1510 win 63318
11:55:20.406183 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1672:1824(152) ack 1599 win 63229
11:55:20.407067 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1824:1976(152) ack 1703 win 63125
11:55:20.407648 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 1976:2138(162) ack 1823 win 63005
11:55:20.408617 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2138:2214(76) ack 1962 win 62866
11:55:20.409027 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2214:2277(63) ack 2034 win 62794
11:55:20.409328 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 5318 win 64240
11:55:20.552902 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2277:2383(106) ack 5318 win 64240
11:55:20.553450 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2383:2459(76) ack 5457 win 64101
11:55:20.553713 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2459:2535(76) ack 5561 win 63997
11:55:20.553939 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2535:2611(76) ack 5649 win 63909
11:55:20.554285 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: P 2611:2656(45) ack 5717 win 63841
11:55:20.722112 IP 192.168.1.200.techra-server > 192.168.1.15.microsoft-ds: . ack 5756 win 63802