Windows Server 2008 on MySQL extranet does not have access to solve the problem

The company broke the network after the recovery has been prompted to connect to the MySQL server local can connect remote No

Here's how to fix it:
Selection: Inbound rules, advanced settings, network->windows Firewall
Then click New Rule in the upper right corner
Select "Ports" Next, enter 3306 ports, add rules,
Then click New Rule again
Select "Program" to find the startup path under MySQL bin, join the rules

Then external access to MySQL. Successful!!!!

This is a firewall problem.