Session 24 NTFS Permissions and Sharing Printers

1. Nassau Community College ITE153 – Operating Systems Session 24 NTFS Permissionsand Sharing Printers

2. Overview Nassau Community College ITE153 – Operating Systems • NTFS Architecture • NTFS Permissions & Guidelines • NTFS Special Permissions • Sharing Printers • Managing and Troubleshooting Printers • Required: Windows 7 Virtual Machine

3. Nassau Community College ITE153 – Operating Systems Session 24Windows 7 ProfessionalNTFS Permissions and Sharing Printers

4. NTFS Nassau Community College ITE153 – Operating Systems • NTFS is a high-performance and self-healing file system proprietary to Windows XP Vista 2003 2000 NT & Windows 7, which supports file-level security, compression and auditing • It also supports large volumes and powerful storage solution such as RAID

5. NTFS Architecture Nassau Community College ITE153 – Operating Systems

6. NTFS Permissions Nassau Community College ITE153 – Operating Systems • Shared Folder permissions are only at the folder level • Files within the folder inherit the shared folder permission • NTFS permissions can be assigned to a file independently of its parent folder • File permissions take precedence over folder permission • When NTFS permissions are used in combination with share permissions, the most restrictive permission applies

7. NTFS Permissions Nassau Community College ITE153 – Operating Systems • In Windows Explorer, right-click a file, folder or volume and choose Properties from the context menu. • The Properties dialog box appears. • Click the Security tab. • Under Group or user names, select or add a group or user. • At the bottom, allow or deny one of the available permissions.

8. NTFS Permissions Nassau Community College ITE153 – Operating Systems • The NTFS permission levels are as follows: • Full Control - Users can do anything to the file, including taking ownership of it. It is recommended that you grant this level of access only to administrators  • Modify - Users can view and modify files and file properties, including deleting and adding files to a directory or file properties to a file. Users cannot take ownership or change permissions on the file  • Read & Execute - Users can run executable files, including scripts  • List Folder Contents - Users can view a list of a folder's contents • Read - Users can view files and file properties • Write - Users can write to a file.

9. NTFS Permissions Guidelines Nassau Community College ITE153 – Operating Systems • Use the following guidelines when you assign NTFS permissions: • To simplify administration, group files into application, data, and home folders. Centralize home and public folders on a volume that is separate from applications and the operating system. Doing so provides the following benefits: • You assign permissions only to folders, not to individual files • Backup is less complex because you don't need to back up application files, and all home and public folders are in one location • Allow users only the level of access that they require. If a user only needs to read a file, assign the Read permission to his or her user account for the file. This reduces the possibility of users accidentally modifying or deleting important documents and application files.

10. NTFS Permissions Guidelines Nassau Community College ITE153 – Operating Systems • Create groupsaccording to the access that the group members require for resources, and then assign the appropriate permissions to the group. Assign permissions to individual user accounts only when necessary • When you assign permissions for working with data or application folders, assign the Read & Executepermission to the Users group and the Administrators group. This prevents application files from being accidentally deleted or damaged by users or viruses • Deny permissions only when it is essential to deny specific access to a specific user account or group • Encourage users to assign permissions to the files and folders that they create and educate them about how to do so

11. NTFS Permission Combinations Rules Nassau Community College ITE153 – Operating Systems

12. NTFS Permission Inheritance Nassau Community College ITE153 – Operating Systems

13. Special NTFS Permissions Nassau Community College ITE153 – Operating Systems • There are fourteen special permissions to fine-tune your security • Click the Advanced button on the Security tab, then click the Effective Permissions tab

14. Special NTFS Permissions Nassau Community College ITE153 – Operating Systems IMPORTANT: Groups or users who are granted Full Control on a folder can delete any files in that folder regardless of the permissions that protect the file. 

15. Lab A: NTFS Permissions Nassau Community College ITE153 – Operating Systems

16. Nassau Community College ITE153 – Operating Systems Session 24Windows 7 ProfessionalSharing Printers

17. Sharing Printers Nassau Community College ITE153 – Operating Systems • Printer Environment • Printer • Printer Port • Printer Driver • Printer Spooling • Print Directory • Network

18. Shared Folders Nassau Community College ITE153 – Operating Systems

19. Connecting a Network Printer Nassau Community College ITE153 – Operating Systems • You can use the Add Printer Wizard to make things easy • The UNC is back but in this format:\\printservername\sharename • You can use Active Directory to Find a printer in the Directory • You will probably have to create a TCP/IP port

20. Adding a Printer Nassau Community College ITE153 – Operating Systems

21. Print Management Nassau Community College ITE153 – Operating Systems

22. Print Services Nassau Community College ITE153 – Operating Systems

23. Print Services Nassau Community College ITE153 – Operating Systems

24. Linux Printing Nassau Community College ITE153 – Operating Systems • The new CUPS interface recognizes many printers. Specific printers not recognized can often be installed using instructions found at the Linux Foundation OpenPrinting database. • Add a Printer • Menu -> System -> Administration -> Printing -> Server -> New -> Printer • Most of the time, your printer (if connected and turned on) will be detected automatically. • e.g., my network printer with its own IP address at 192.168.0.200 was correctly installed athp:/net/Photosmart_D110_series?zc=HP54DDCF • You can also choose printers on a Windows system via Samba and other types of networked printers, in addition to directly connected printers. • Use CUPS web interface • From any web browser, go to the URL:http://localhost:631

25. Lab B: Sharing Printers Nassau Community College ITE153 – Operating Systems

26. Important URLS Nassau Community College ITE153 – Operating Systems • NTFS Technical Reference - What it is, how it works, and tools to use. • NTFS.com - everything you ever wanted to know about NTFS • Securing Resources with NTFS Permissions - good, practical tutorial on NTFS permissions • CUPS - Command Line Unix Printing, this is a great site for help in setting up printers in Linux • SAMBA - This software providers interoperability between Windows and everything else • Windows 2008 Server Print Management - lots of helpful information from Microsoft

27. Homework Nassau Community College ITE153 – Operating Systems • Review the Slides • Review Lessons 10 &11 In The Text