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Cleopatra Enterprise - Cost Engineering

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Administrator training<br />

5.1.5 Choosing an authentication mode<br />

When configuring the SQL server, you must select an authentication mode.<br />

There are two possible modes:<br />

Windows Authentication mode. This enables Windows Authentication and disables SQL Server<br />

Authentication.<br />

Mixed mode. This enables both Windows Authentication and SQL Server Authentication.<br />

Windows Authentication is always available and cannot be disabled.<br />

Microsoft advises to use Windows Authentication when possible.<br />

Disadvantages of SQL Server Authentication:<br />

If a user is a Windows domain user who has a login and password for Windows, he must still provide<br />

another (SQL Server) login and password to connect.<br />

SQL Server Authentication cannot use the "Kerberos security protocol".<br />

Windows offers additional password policies that are not available for SQL Server logins.<br />

Advantages of SQL Server Authentication:<br />

Allows SQL Server to support environments with mixed operating systems.<br />

Allows users to connect from unknown or untrusted domains.<br />

See "Choosing an Authentication Mode" on Microsoft's developer center pages for<br />

more detailed information.<br />

5.1.6 Opening a Port on the firewall<br />

In order to connect to an SQL server on a remote machine you need to make sure the firewall opens the port<br />

on which SQL server is listening (default 1433). You can do that in the "Control Panel" (see steps below) or<br />

by using the command line: "Netsh firewall set port opening tcp 1433 SQL_PORT_1433 ENABLE ALL"<br />

Opening a port on the firewall:<br />

Select "Start" on the windows taskbar.<br />

Select the "Control panel".<br />

Select "Windows firewall".<br />

Select the "Exceptions" tab.<br />

Press the "Add port" button.<br />

The "Add port" dialog appears.<br />

Enter a "Name"<br />

Enter the "Port number" on which SQL server is listening<br />

Select "TCP".<br />

Press the "OK" button.<br />

The port is added.<br />

Press the "OK" button.<br />

76<br />

For local installations Microsoft SQL server express edition is available. Be aware that this<br />

version has its limitations. E.g. The express edition has 4 GB database size limit, the<br />

MSDE has a maximum of 2 GB database size. See the Microsoft documentation for<br />

detailed information.

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