Server Security in .NET

Painting QR-Code in .NET Server Security

Server Security
QR Code JIS X 0510 Printer In .NET
Using Barcode generator for Visual Studio .NET Control to generate, create QR Code image in VS .NET applications.
QR Code 2d Barcode Decoder In Visual Studio .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in VS .NET applications.
In security terms, the SQL Server instance acts as the front door without the granting of some degree of access at this point, no request will be fulfilled (and the user or application will certainly not get as far as their intended database) So we will first take a look at the instance-level objects that control user access: principals, logins, roles and permissions
Barcode Drawer In Visual Studio .NET
Using Barcode creation for .NET framework Control to generate, create barcode image in VS .NET applications.
Bar Code Decoder In .NET Framework
Using Barcode decoder for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
5: Security
Make QR Code In Visual C#.NET
Using Barcode creation for VS .NET Control to generate, create QR Code image in VS .NET applications.
Paint QR Code ISO/IEC18004 In .NET
Using Barcode creation for ASP.NET Control to generate, create Denso QR Bar Code image in ASP.NET applications.
Principals
QR Maker In VB.NET
Using Barcode generation for .NET framework Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
Encoding Barcode In VS .NET
Using Barcode printer for .NET framework Control to generate, create barcode image in .NET applications.
The term principal is applied to an entity that can request access to SQL Server Very often, these relate directly to individual users or applications and can also represent groups of users Instance-level principals are called logins, while database-level principals are called Users These two levels of principals are necessary because a SQL Server instance can have any number of databases, each of which can have a completely separate security model There are two types of instance-level principals: Windows principals: Domain or Local Users Domain or Local Group SQL Server principals: SQL Server login These two types of principals are the result of two different authentication models that can be used in SQL Server: Windows authentication and SQL Server authentication In SQL Server authentication, a login object is defined along with a password, which is stored in the master database (the password is hashed), and this login name and password are passed to SQL Server for evaluation at the point the client connection is requested SQL Server authenticates the user (establishes that they are who they say they are, in this case by hashing the provided password and matching it against the stored hash) In Windows authentication, a login object is also created and stored in the master database; however, no password is supplied and the login is associated with a preexisting Windows principal Now, it is Windows that authenticates the user prior to the client request being made, and evidence of this authentication (a Kerberos ticket) is passed to SQL Server as the connection is requested to allow SQL Server to carry out authorization Note that in both cases, a login object represents the instance-level permissions granted to the principal; the difference is only whether the login is mapped to a Windows principal or whether it represents a SQL Server principal in its own right To keep things simple, we ll refer to these two types of login as Windows logins and SQL Server logins, respectively SQL Server authentication can be enabled and disabled for an instance, whereas Windows authentication is always enabled
Making Code 128 Code Set A In .NET
Using Barcode drawer for .NET framework Control to generate, create Code 128A image in VS .NET applications.
Print ECC200 In .NET Framework
Using Barcode drawer for VS .NET Control to generate, create DataMatrix image in .NET applications.
NOTE
UPC Symbol Generation In .NET
Using Barcode generator for .NET Control to generate, create UPC-A Supplement 5 image in .NET applications.
Identcode Printer In .NET Framework
Using Barcode maker for .NET Control to generate, create Identcode image in .NET framework applications.
Even if SQL Server authentication is not enabled, SQL Server logins can still be created; however, they will not be able to connect
Data Matrix 2d Barcode Creator In Objective-C
Using Barcode creation for iPad Control to generate, create ECC200 image in iPad applications.
EAN 13 Drawer In VS .NET
Using Barcode generator for ASP.NET Control to generate, create UPC - 13 image in ASP.NET applications.
Microsoft SQL Server 2008 Administration for Oracle DBAs
Draw Matrix 2D Barcode In Visual Basic .NET
Using Barcode encoder for .NET framework Control to generate, create Matrix 2D Barcode image in VS .NET applications.
1D Barcode Creation In Java
Using Barcode generator for Java Control to generate, create 1D image in Java applications.
Logins
Scan UCC-128 In Visual Basic .NET
Using Barcode decoder for VS .NET Control to read, scan read, scan image in VS .NET applications.
Encode EAN-13 In VB.NET
Using Barcode encoder for .NET Control to generate, create EAN-13 Supplement 5 image in .NET framework applications.
As previously stated, a login object is required in all cases to connect to a SQL Server instance Certain logins are automatically created when the SQL Server instance is installed (as shown in Figure 5-1) and are added to groups that give certain privileges; these groups are detailed later in this section Earlier versions of SQL Server created logins associated directly with the Windows accounts under which the instance service and the SQL Server Agent service were configured to run As discussed in 3, the SQL Server installer now creates per-service identities (SIDs) and adds them to the appropriate SQL Server service groups in Windows Remember that there are two different Windows identities associated with any Windows service: the service account and the per-service SID The service account is the user who starts the service and owns the service process The per-service SID is a special account that represents the service itself It has no password, and can be used to assign privileges to a service directly, instead of having to assign them to the service account Per-service SIDs are referred to with a name of the form NT SERVICE\SERVICE NAME, where SERVICE NAME is the name of the service The groups created to support the database engine are SQLServerMSSQLUser$Server Name$Instance Name The group of SIDs representing the SQL Server instance services on a given server SQLServerSQLAgentUser$Server Name$Instance Name The group of SIDs representing the SQL Server Agent services on a given server
UPC Code Printer In Objective-C
Using Barcode generator for iPhone Control to generate, create UPC-A image in iPhone applications.
Generate Data Matrix 2d Barcode In None
Using Barcode generator for Microsoft Word Control to generate, create DataMatrix image in Word applications.
Copyright © OnBarcode.com . All rights reserved.