Connections to SQL Server Through Proxy Server
You can connect to an instance of Microsoft® SQL Server™ through Microsoft Proxy Server, a stand-alone program that provides secured access to data. Thus, you can prevent unauthorized users from connecting to your private network. This keeps your sensitive data secure by controlling all the permissions and accesses to the listening port. Microsoft Proxy Server is integrated with Microsoft Windows® 2000 Server user authentication. You can block access to restricted sites by ranges of IP addresses, domains, or individual users so you can ensure that your users are using their Internet permissions appropriately.
For more information about Local Address Table (LAT) configuration in the context of remote listen and accept calls, see the Microsoft Proxy Server documentation.
To connect to an instance of SQL Server through Microsoft Proxy Server