IPtables the play is dangerous and frustrating...yet find the way how to enable outbound traffic for port 3306 mysql

1. vi /etc/sysconfig/iptables 
To allow inbound traffic add this rule:  -A INPUT -p tcp -m tcp --dport 3306 -j ACCEPT
To allow outbound traffic add this rule:  -A OUTPUT -p tcp -m tcp --dport 3306 -j ACCEPT 

Now restart IPtables:  /etc/init.d/iptables restart