Network Implementation and Support Lesson 05 File Access - Eric Vanderburg

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Network Implementation and Support Lesson 05 File Access - Eric Vanderburg

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Network Implementation and Support Lesson 05 File Access - Eric Vanderburg

  1. 1. Network Implementation & Support Chapter 5 Managing File Access Eric Vanderburg © 2006
  2. 2. File Systems • FAT (Up to 4 GB) • FAT32 (Up to 2 TB) • NTFS (Up to 2 EB) – Supports file level security – Required for AD – Quotas Eric Vanderburg © 2006
  3. 3. Comparison File System Logical Drive Size Sectors per Bytes per Cluster Cluster FAT16 1-128 MB 128-256 MB 256-512 MB 512 MB–1 GB 1-4 GB 4 8 16 32 64 2,048 4,096 8,192 16,384 32,768 FAT32 512 MB-8 GB 8-16 GB 16-32 GB > 32 GB 8 16 32 64 4,096 8,192 16,384 32,768 NTFS 1-512 MB 512 MB–1 GB 1-2 GB > 2 GB 1 2 4 8 512 1,024 2,048 4,096 Eric Vanderburg © 2006
  4. 4. Shares • Creating shared folders • Viewing in Computer Management • DACL (Discretionary Access Control List) – List of users and permissions • ACE (Access Control Entry) – Individual users or group entries in the DACL Eric Vanderburg © 2006
  5. 5. NTFS Permissions • Full Control • Modify (full minus delete subfolders, change permissions, and ownership) • Read & Execute (look at attributes & permissions, traverse folders) • List Folder Contents • Read (no traverse) • Write (create files and folders, change attributes) Eric Vanderburg © 2006
  6. 6. Special Permissions • • • • • • • • • • • Traverse Folder/Execute File List Folder/Read Data Read Attributes Read Extended Attributes Create Files/Write Data Create Folders/Append Data Write Attributes Write Extended Attributes Delete Subfolders & Files Delete (specific to a file or folder) Take Ownership Eric Vanderburg © 2006
  7. 7. Folder NTFS Permissions File NTFS Permissions Eric Vanderburg © 2006
  8. 8. NTFS Permissions • Add together • Deny has precedence • Child folders inherit permissions • Inheritance can be blocked • It can also be forced Eric Vanderburg © 2006
  9. 9. Permissions • Most restrictive between share and security applies • Usually share is full control and access is determined solely by NTFS security Eric Vanderburg © 2006
  10. 10. Acronyms • • • • ACE, Access Control Entry DACL, Discretionary Access Control List FAT, File Allocation Table NTFS, New Technology File System Eric Vanderburg © 2006

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