"GreenSQL team is ready to present new version of GreenSQL - SQL Database Firewall. GreenSQL intercept SQL commands being sent to MySQL, checks them, and then either halts the query or passes it on to MySQL proper. Then it returns the query results to the calling application. Currently only MySQL database is supported. GreenSQL is distributed under the GPL license. This release includes a new version of firewall and a management application."
Read more: http://www.greensql.net/node/835