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Sysasymmetric_keys Syssymmetric_keys Syscertificates Syscredentials Syscrypt_properties Table 8-9 Encryption views
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Lists information on any created asymmetric keys Lists information on any created symmetric keys Lists information on any created certificates Lists information on any created certificates Lists cryptographic properties on securables
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In the following exercise, we will execute some of the security catalog views to establish a security baseline
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8: Database Security
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Exercise 83: Establish a Security Baseline on the AdventureWorks Database 1 Open SSMS and create a New Query window 2 Use the following query to identify all of the server-level principals:
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Use Master; Go SELECT * FROM sysserver_principals
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3 Scroll to the right to view the type_desc column Notice the different categories: server roles, certificate mapped logins, windows groups, windows logins, and SQL logins 4 Use the following query to identify all of the database-level principals on the AdventureWorks database:
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USE AdventureWorks; GO SELECT * FROM sysdatabase_principals
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Look at the type_desc column Notice that database principals are derived from the same types of principals as the server 5 Use the following query to identify all of the permissions granted on the AdventureWorks database:
USE AdventureWorks; GO SELECT * FROM sysdatabase_permissions
While this lists all the permissions, it doesn t list who is granted permission in readable terms Look at the grantee_principal_id column This identifies who is actually granted the permission 6 Verify the Sally login has access to the AdventureWorks database via the Sally_dbUser database user TIP In Exercise 81, the Sally login for the server was created, the Sally_dbUser database user was created in AdventureWorks, and the Sally login was mapped to the Sally_dbUser database user If that exercise was not done, perform those steps now a Within the SSMS Object Explorer, open the Security container within the AdventureWorks database Open the Users container b Right-click the Sally_dbUser account and select Properties Verify the Login Name is computerName\Sally where computerName is the name of your computer Click OK 7 View the permission on the AdventureWorks database: a Right-click the AdventureWorks database and select Refresh b Right-click the AdventureWorks database and select Properties
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c Select the Permissions page d Notice that the Sally_dbUser user has Connect permission Click OK 8 Use the following query to identify all of the database-level principals on the AdventureWorks database:
USE AdventureWorks; GO SELECT * FROM sysdatabase_principals
Locate the row associated with Sally_dbUser The name column will have Sally_dbUser listed Write down the principal_id of this account: ___________ 9 Use the following query to identify all of the permissions granted on the AdventureWorks database:
USE AdventureWorks; GO SELECT * FROM sysdatabase_permissions
10 Identify the row that has the grantee_principal_id value of the Sally_dbUser principal_id that you wrote down in step 8 This row shows that you have granted the Sally_dbUser user Connect permission on the AdventureWorks database If we were only interested in the permissions granted to Sally, we could use the following query, substituting the number 5 with the ID identified in step 8:
SELECT * FROM sysdatabase_permissions WHERE grantee_principal_id = 5
11 Rerun the query in steps 8 and 9, and save the data as a baseline: a Run the following query:
USE AdventureWorks; GO SELECT * FROM sysdatabase_permissions
b Right-click in the results pane and select Save Results As c In the Save Grid Results dialog box, enter AdventureWorksPermissionBas eline and ensure the Save As Type is set to Export Files (*csv) Click Save NOTE Of course, the document can be saved in other waysYou can modify the query output to send it directly to a fileYou can right-click within the grid result, click Copy, and paste it into an Excel Worksheet d Rerun the query to list the database principals:
USE AdventureWorks; SELECT * FROM sysdatabase_principals
e Right-click in the results pane and select Save Results As f In the Save Grid Results dialog box, enter AdventureWorksPrincipalBaseline and ensure the Save As Type is set to Export Files (*csv) Click Save
8: Database Security
Encryption
Encryption isn t a new feature in SQL Server 2005, but as easy as encryption was to break in SQL Server 2000, it might as well be new It s been rebuilt from the ground up using certificates and supporting a wide variety of encryption algorithms The capabilities of encryption go way beyond what I m including in this small section The goal here is to provide enough exposure so that you can see the basics (and pass the tests) EXAM TIP An ideal way to protect data from accidental disclosure is to encrypt it within a database Any type of sensitive data (such as credit card information, privacy act information, patient information, etc) can be encrypted at the column level to protect it SQL Server 2005 uses a hierarchical encryption and key management infrastructure where each layer encrypts the layer below it using a combination of certificates and keys Take a look at Figure 8-15 for an overview of the encryption hierarchy
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