INF: How to Set Up SQL Server for Access Through Microsoft Proxy Server

ID: Q216415

The information in this article applies to:

Microsoft SQL Server versions 6.5, 7.0
Microsoft Proxy Server version 2.0

SUMMARY

SQL Server can operate transparently with Proxy Server to prevent unauthorized access to your internal network and eliminate the need to connect SQL Server directly to the Internet.

When running SQL Server on a computer located behind Proxy Server, SQL Server is protected by the packet filtering features of Proxy Server.

An administrator can configure Proxy Server to grant or deny inbound SQL Server access by user, service, port, or IP domain.

This article describes how to configure Microsoft SQL Server so that it can be accessed using the Server Proxy features of Microsoft Proxy Server.

MORE INFORMATION

This article will explain how to configure SQL Server for use with Proxy Server, given the following scenario:

SQL Server is located on an internal network, with an IP address of 209.58.170.10.

The computer running Proxy Server has two network interface cards (NICs). One NIC is connected to the internal network, with an IP address of 209.58.170.20. The second NIC is connected to the Internet, with an IP address of 157.57.25.30.

You want to access SQL Server from a client workstation located on the Internet.

To configure SQL Server with Proxy Server given the conditions listed above, perform the following steps:

Configure SQL Server with TCP/IP Sockets as one of the network protocols. If you use a port number other than 1433 (the default), modify the ServerBindTCPPorts line in Step 2 of this procedure to reflect that port number.

Create the following Wspcfg.ini file on the SQL Server computer and place it in the same folder as the Sqlservr.exe file (by default, this is the C:\Mssql7\Binn directory for SQL Server 7.0 and the C:\Mmssql\Binn directory for SQL Server 6.5):
```
   [sqlservr]
   ServerBindTCPPorts=1433
   Persistent=1
   KillOldSession=1 
```

Install and configure Microsoft Proxy Server according to the documentation provided with the product. Add the SQL Server computer's IP address (209.58.170.10), along with the internal (intranet) IP address of the Proxy Server (209.58.170.20), to the Local Address Table (LAT) on Proxy Server.

From the computer running SQL Server, connect to the MSPCLNT share on the Proxy Server and install the Winsock Proxy Client.

Restart the SQL Server computer so that the changes to the Winsock driver can take affect.

Now you must modify the client workstations for accessing the SQL Server through the Proxy Server computer. To do this, perform the following steps:
1. Start the SQL Server Client Network Utility and click the General tab.
2. Click Add to create an entry for the SQL Server, using TCP/IP as the Network Library. Provide a server alias and type the external (Internet) IP address of the Proxy Server (157.57.25.30) in the Computer Name line. Make sure the Port Number field contains the correct port number (by default, this should be 1433).

Verify the connection to SQL server from the client computer by starting Query Analyzer (for SQL Server 7.0) or ISQL/w (for SQL Server 6.5) and connecting to the server name you specified in part 2 of step 6 above.

Additional query words: Remote


Keywords          : kbinterop kbnetwork SSrvInst 
Version           : winnt:2.0,6.5,7.0
Platform          : winnt 
Issue type        : kbhowto kbinfo

Last Reviewed: February 25, 1999