用wireshark查看 tcpdump 抓取的mysql交互数据

用tcpdump 抓取 mysql客户端与服务器端的交互

1开启tcpdump

 tcpdump -i eth0 -s 3000 port 3306 -w ~/sql.pcap

先故意输入一个错误的密码

[root@localhost ~]# mysql -h192.168.100.206 -uroot -p
Enter password:
ERROR 1045 (28000): Access denied for user 'root'@'192.168.11.201' (using password: YES)

输入正确的密码进入并进行一系列操作

[root@localhost ~]# mysql -h192.168.100.206 -uroot -p
Enter password:
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 442447
Server version: 5.5.25-log Source distribution

Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> use jwbx;
Database changed
mysql> select * from jwbx_customer limit 10;

用wireshark 打开sql.pcap 文件

用wireshark查看 tcpdump 抓取的mysql交互数据

输入的错误密码

Request 6 0.001146 192.168.11.201 192.168.100.206 MySQL 128 Login Request user=root

Response 8 0.001636 192.168.100.206 192.168.11.201 MySQL 147 Response Error 1045

用wireshark查看 tcpdump 抓取的mysql交互数据

登陆成功

17 4.953321 192.168.11.201 192.168.100.206 MySQL 128 Login Request user=root

来自服务器端的问候

15 4.952968 192.168.100.206 192.168.11.201 MySQL 148 Server Greeting proto=10 version=5.5.25-log

用wireshark查看 tcpdump 抓取的mysql交互数据

服务器端的状态

用wireshark查看 tcpdump 抓取的mysql交互数据

访问

select @@version_comment limit 1 返回 Source distribution

SELECT DATABASE()

USE DataBase 返回数据库名

访问的sql

用wireshark查看 tcpdump 抓取的mysql交互数据

Return

用wireshark查看 tcpdump 抓取的mysql交互数据

同样可以在抓取程序访问mysql的数据，可以查看执行了哪些sql语句

也可以不用wireshark 方式如下:

#tcpdump -i any -A -s 3000 port 3306 >~/sql.log
#grep "select * from " ~/sql.log|head

备注：-A 以ASCII格式打印出所有分组，并将链路层的头最小化。向mysql服务端传输的sql语句就是以ASCII码形式进行传输。我们就可以使用-A参数查看传输的具体sql语句。