You can connect to 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 NT® 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, see your Microsoft Proxy Server documentation for Local Address Table (LAT) configuration in the context of remote listen and accept calls.
To connect to SQL Server through Microsoft Proxy Server