windows ODBC驱动链接不上linux上的Mysql 数据库原因

1. 主要原因是Linux开了 iptables 防火墙，对于window发起到mysql的3306 端口的tcp链接
被linux 回复了ICMP 服务器reject...

解决的方法是：

是在防火墙中放开 3306 的端口；linux采用工具这边抓包；

iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
iptables -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT

iptables -A INPUT -j REJECT --reject-with icmp-host-prohibited

LINUX的文件：(仅供参考，/etc/sysconfig/iptables)

# Firewall configuration written by system-config-firewall

# Manual customization of this file is not recommended.

*filter

:INPUT ACCEPT [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

-A INPUT -p icmp -j ACCEPT

-A INPUT -i lo -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

修改为： （重新启动后，永久生效）
[root@CentOS jack]# cat /etc/sysconfig/iptables

# Firewall configuration written by system-config-firewall

# Manual customization of this file is not recommended.

*filter

:INPUT ACCEPT [0:0]

:FORWARD ACCEPT [0:0]

:OUTPUT ACCEPT [0:0]

-A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

-A INPUT -p icmp -j ACCEPT

-A INPUT -i lo -j ACCEPT

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT

-A INPUT -m state --state New -m tcp -p tcp --dport 3306 -j ACCEPT

-A INPUT -j REJECT --reject-with icmp-host-prohibited

-A FORWARD -j REJECT --reject-with icmp-host-prohibited

COMMIT

[root@CentOS jack]#

[root@CentOS jack]# service iptables stop

iptables：清除防火墙规则： [确定]

iptables：将链设置为政策 ACCEPT：filter [确定]

iptables：正在卸载模块： [确定]

[root@CentOS jack]# service iptables start

iptables：应用防火墙规则： [确定]

[root@CentOS jack]# iptables -L -nv

Chain INPUT (policy ACCEPT 0 packets, 0 bytes)

pkts bytes target prot opt in out source destination

14 924 ACCEPT all -- * * 0.0.0.0/0 0.0.0.0/0 state RELATED,ESTABLISHED

0 0 ACCEPT icmp -- * * 0.0.0.0/0 0.0.0.0/0

0 0 ACCEPT all -- lo * 0.0.0.0/0 0.0.0.0/0

0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:22

0 0 ACCEPT tcp -- * * 0.0.0.0/0 0.0.0.0/0 state NEW tcp dpt:3306

0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)

pkts bytes target prot opt in out source destination

0 0 REJECT all -- * * 0.0.0.0/0 0.0.0.0/0 reject-with icmp-host-prohibited

Chain OUTPUT (policy ACCEPT 8 packets, 1120 bytes)

pkts bytes target prot opt in out source destination

2. ODBC驱动安装完毕，可以和mysql测试OK, 但是发现和office，excel，visio的外部数据源ODBC连不上，出现： 体系冲突；

结果发现，win7 64位， 安装的是32为的office， 所以，mysql odbc驱动 需要下载 32位，才可以使用；mysql odbc 64位的驱动是不行的。