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...Suited to Java applications that require JDBC access across wide area networks like the internet but do not wish to expose the remote database-server through the remote hosts firewall.
The driver is well suited for connecting Java client applications to a (dynamic) websites database without risking the security of the database server since all exchanges use PHP as a relay agent. Java client applications can connect from dynamic or static IP's safely using the SSL protocol (plaintext is also supported).
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The Universal SQL Gateway tunnels SQL requests through firewalls over HTTP by implementing a special JDBC driver. It provides secure database acces by acting as a firewall component commonly refered to as Application Gateway.