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这是端口监听得到的信息..
-bash-3.00# tcpdump tcp port 21
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 96 bytes
09:00:40.099075 IP 59.46.156.*.* > 222.33.*.*.ftp: S 777369750:777369750(0) win 8192 <mss 1452>
09:00:40.273849 IP 222.33.*.*.ftp > 59.46.156.*.*: S 2720811753:2720811753(0) ack 777369751 win 5840 <mss 1460>
09:00:43.157826 IP 222.33.*.*.ftp > 59.46.156.*.*: S 2720811753:2720811753(0) ack 777369751 win 5840 <mss 1460>
09:00:49.156778 IP 222.33.*.*.ftp > 59.46.156.*.*: S 2720811753:2720811753(0) ack 777369751 win 5840 <mss 1460>
09:01:00.154990 IP 222.33.*.*.ftp > 59.46.156.145.1537: S 2647473967:2647473967(0) ack 759053138 win 5840 <mss 1460>
09:01:01.355789 IP 222.33.*.*.ftp > 59.46.156.*.*: S 2720811753:2720811753(0) ack 777369751 win 5840 <mss 1460>
09:01:25.352015 IP 222.33.*.*.ftp > 59.46.156.*.*: S 2720811753:2720811753(0) ack 777369751 win 5840 <mss 1460>
09:02:13.544826 IP 222.33.*.*.ftp > 59.46.156.*.*: S 2720811753:2720811753(0) ack 777369751 win 5840 <mss 1460> |
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