External Security: Securing Network Access

The MySQL security system is flexible. It allows you to set up user access privileges in many different ways. Normally, you do this by using the GRANT and REVOKE statements, which modify for you the grant tables that control client access. However, you may have an older version of MySQL that does not support these statements (they were not functional prior to MySQL 3.22.11), or you may find that user privileges don't seem to be working the way you want. For situations like this, it's helpful to understand the structure of the MySQL grant tables and how the server uses them to determine access permissions. Such an understanding allows you to add, remove, or modify user privileges by modifying the grant ...

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