December 3, 2009

How to Increasing Security by Using EFS

In this practice, you log on as an administrator and encrypt a folder and its files. You
then log on using a different user account, and attempt to open an encrypted file and
disable encryption on the encrypted file.
1. In Windows Explorer, create a folder named Secret on the C drive.
2. In the Secret folder, create a text file named SecretFile.txt.
3. Right-click the Secret folder, and then click Properties.
Windows XP Professional displays the Secret Properties dialog box with the General
tab active.
4. Click Advanced.
The Advanced Attributes dialog box appears.
5. Select the Encrypt Contents To Secure Data check box, and then click OK.
6. Click OK to close the Secret Properties dialog box.
The Confirm Attribute Change dialog box informs you that you are about to
encrypt a folder. You have two choices: You can encrypt only this folder, or you
can encrypt the folder and all subfolders and files in the folder
7. Select the Apply Changes To This Folder, Subfolders And Files option, and then
click OK.
8. Open the Secret folder.
9. What color is the SecretFile.txt text file? Why?
10. In the Secret folder, right-click the SecretFile.txt text file, and then click Properties.
The SecretFile.txt Properties dialog box appears.
11. Click Advanced.
The Advanced Attributes dialog box appears. Notice that the Encrypt Contents To
Secure Data check box is selected.
12. Close the Advanced Attributes dialog box.
13. Close the Properties dialog box.
14. Close all windows and log off.
15. Log on as User5.
16. In Windows Explorer, locate and open the SecretFile.txt text file.
17. What happens?
18. Close Notepad.
19. Right-click the SecretFile.txt text file, and then click Properties.
20. Click Advanced.
21. Clear the Encrypt Contents To Secure Data check box, and then click OK.
22. Click OK to close the SecretFile.txt Properties dialog box.
The Error Applying Attributes dialog box appears and informs you that access to
the file is denied.
23. Click Cancel.
24. Close all open windows and dialog boxes.
25. Log off.

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