目录

网络抓包工具Tcpdump

查看443端口的发包情况

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tcpdump -nnSX port 443

结果

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18:36:15.567688 IP 192.168.31.26.51842 > 104.21.5.103.443: Flags [P.], seq 3089667269:3089667306, ack 3818071690, win 4096, length 37
	0x0000:  8c53 c3c7 8e3d f45c 89a5 12a9 0800 4500  .S...=.\......E.
	0x0010:  004d 0000 4000 4006 ed6c c0a8 1f1a 6815  .M..@[email protected].
	0x0020:  0567 ca82 01bb b828 94c5 e393 268a 5018  .g.....(....&.P.
	0x0030:  1000 ec97 0000 1703 0300 2000 0000 0000  ................
	0x0040:  0000 08e4 fdab 8f80 6ac9 1202 7549 9532  ........j...uI.2
	0x0050:  e683 0df8 36d1 583a 09a4 5e              ....6.X:..^
18:36:15.708507 IP 104.21.5.103.443 > 192.168.31.26.51842: Flags [.], ack 3089667208, win 8, length 0
	0x0000:  f45c 89a5 12a9 8c53 c3c7 8e3d 0800 4500  .\.....S...=..E.
	0x0010:  0028 3800 4000 3506 c091 6815 0567 c0a8  .([email protected]..
	0x0020:  1f1a 01bb ca82 e393 268a b828 9488 5010  ........&..(..P.
	0x0030:  0008 3f81 0000

来源