I) What is NTFS Permission :

As you can see : "NTFS" is one of the formats of hard disk drive, just like FAT, exFAT ...  and nowaday, most of hard disk computers (Desktop & Laptop) use  NTFS format.
NTFS Permission help us give different permissions to different users on the same file or folder .

Comparion between Share Permission and NTFS Permission :

                                                   Share                                           NTFS


  • Permission on Folder                       yes                                   yes
  • Permission on File                            no                                   yes
  • Affect a user by logging through      yes                                    yes
  • other computer
  • Affect a user by logging directly       no                                     yes
  • Number of permission         3 (Full, Change, Read)          19 permissions


Try this : Right click on File or Foler > Properties> Security tab

1/ 6 standard Permissions :

 - List Folder Content : You can access shared folder, see what's in it .
 - Read : For example : read the text file . But cannot execute any program .
 - Read & Execute : Read + Execute program .
 - Write : change, create new but cannot delete data .
(note : Write is indepent permission with Read - write can change a file by console without "read" it)
 - Modify  = Read + Write + Delete
 - Full Control : do anything to this file or folder : read, write, delete ...and especially : be able to change the permission of this folder .


2/ 13 special Permissions : 


- More detail & complex  permissions, to serve administration's need .
- For example : give user A the right to delete his own folder he created before but he cannot delete other folder belongs to user B .
- Creator Owner : is a group, when user A create a folder or file, he belongs to this group and he has the right to fully control his Data he created before.

3/ Inheritance permission :


In folder A we have folder B, so if user1 has some permissions on folderA => He will have the same permissions on folder B .

We can remove this inheritance by doing this :

Right click on folder A > Properties> Security > Advanced => change permissions : un-check a option "include inheritable ..." , click Add to keep inheritable table .

4/ Relationship between NTFS permission and Share Permission :


When user A  accesses folder X through the network from other computer. His rights are under 2 effects, one from NTFS, and the other from Share . His rights now are "mutual permission"


NTFS                  Share                           User's Right


modify                read                                  read
write               read               NO right (remember write & read are separated permission)
full control          change                          change/modify

R or M or F          Full Control                     R or M or F               

(R/M/F : Read/Modify/Full Control)

We don't want both permissions : Share & NTFS mix up with each other. So set Share Permission to everyone : Full ControlAnd don't worry, we have NTFS Permission to handle security problem .

(*This post is marked as partially completed - there  are some info I will  supplement later, now I'm kinda busy for life, LOL, let's move on to the next post *)

I) Introduction :

Sharing helps users access data resources easily and conveniently . There are some computers play a role as a sharing centre , and other computers can access to use resources like Data, Printer or Internet ...

A computer which shares Data resources is called File Server.
This computer is a File Server if it meets these requirements :
- Turn off Firewall
- Using Classic Authentication
- Has a list of users account - so other computers will use these accounts to access File Server.

II) Sharing :

1) Data sharing and sharing permission : 


- We can only share a folder - NOT A FILE .
- Folder A include folder B and C, if you want to share all of them,  sharing  folder A is enough .
- Only Administrators has a right to share .
- Sharing only  affects to users log on from other computers, it won't work with directly logging on  .

(For example computer A has a user A and he has a right to access folder XXX, so if user A log on from computer B - he will see this folder ; if he log on at computer A - he won't see it)

How to Share : Right click on a folder you want to share> Properties> Sharing > Share...
                    Or for more options, choose Advanced Sharing ... > Tick at Share this folder .
Notice :
at Permissions>  Share Permissions : You will see 3 options :
 + Full control : User can do anything to this folder contents
 + Write : User can create new contents or change it, but cannot delete it .
 + Read  : User just read them, cannot change or delete .


2) Let's watch the video :


It's  mostly the best way to understand the bunch of theories, and it's always faster than reading .
But you need more concentration :

AND



Notice that, Computer 2 WILL NOT  access folder created in DESKTOP ...
My teacher told me that is because of Desktop is Work-Place of user and doesn't permit any other user access shared folder on it. Quite ambiguous ! I will find it out and tell ya later !
 
I) Network Access :

1/ Configure IP address :

If you don't know how to set an IP Address for a computer, please watch this video :


2/ Ping :
Set IP address to 2 computers 1 & 2 :

Computer 1 : 192.168.1.1 / 255.255.255.0
Computer 2 : 192.168.1.2 / 255.255.255.0

We will disable Firewall on both of these Computers, and try to use PING  command to test their connnection (before doing that, just plug both cables to a Switch or directly connect 2 computers) .

Watch this video :

3/ Access Authentication :

In Windows : there are 2 models of authentication
a) Classic : 3 STEPS
STEP 1 :
- Computer 1 is want to access Computer 2 will try to use its CURRENT ACCOUNT (username & password) .
STEP 2 :
- If not successful, Computer 1 will use Guest Account to access.

STEP 3 
- If not successful, Computer 1 will see a Dialog Box requires to Type Username/Password in order to access Computer 2.
-If not successful, ACCESS DENIED !

Please watch the video to fully understand what I am saying, it has made me confused at the first time, I know you do, too .




b) Guest Only : 

Using Guest Account to access, if Guest Account has been disabled, Access is denied regardless User is Administrator (because only Guest account has a permission to access)
Today I got a problem with booting to Windows 7, after helping a girl last night LOL .
She asked me how to divide a partition in Windows, I tried to do it with out Hiren Boot CD, by using Disk Management .  I use dual boot Windows 7 - Ubuntu and I tried to delete partition which hosts Ubuntu OS & SWAP partition .

I got 3 other drive called : C (Windows OS is here), D and E .  Then I extended E by taking all partition I kept my Ubuntu OS before .

Now I got 3 partitions : C, D and E.

Today, I restart my computer and got a prolem when booting , It shows a command line "Grub Rescue"

Hmm... I tried to insert a Windows Install Disk and repair (you should try this first if you got a same problem), but not successful.
I do some searches on Google and found it !

After inserting a Windows Install Disk, you go to Repair and Choose Command Line , and just type "bootrec /fixmbr " (without a quotation marks) .


It works perfectly !