I am currently doing development for a LAMP-based website. I do not know what configuration changes have been made to MySQL since it was installed on our server. The way that we use MySQL, there is no reason for our database to accept any remote connections; it only needs to be accessed locally either via PHP or through the command-line shell over an ssh session.
For security reasons, I want to make sure that there is no way to connect to our database remotely. What settings do I need to check to make sure that this is the case? Is there a single option somewhere that I can set to prevent all remote connections?