A plus 1002 Sub-objective 2.6 – Compare and contrast the differences of basic Microsoft Windows OS security settings. – Dumps4shared

A plus 1002 Sub-objective 2.6 – Compare and contrast the differences of basic Microsoft Windows OS security settings.

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Welcome to ExamNotes by Dumps4shared! In this section, covering A plus 1002 Sub-objective 2.6 we will examine the security settings on a basic Windows OS installation. We will also discuss the differences between settings that are context-sensitive. When going through this section, please remember that we didn’t create the operating system. We only authored this guide.

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Users and
groups

In order to manage permissions, Microsoft uses User accounts to
assign rights and privileges. User accounts can also be assigned to a Group,
containing multiple users and is assigned a specific set of privileges that
apply to all users within the group. A user can belong to more than one group.
Privileges explicitly assigned to an individual user take precedence over any
conflicting group settings. Shown below is a look at the built-in groups in
Computer Management.

Local Users and Groups – Groups tab

Administrator

The most powerful group is the Administrators group. The most
powerful user account is the Administrator. Users assigned to the
Administrators group have complete and unrestricted access to the computer and
domain if applicable. Standard users can be temporarily elevated to
Administrator status by temporarily using the alternate credentials, described
later in this section. Best practice indicates that the actual Administrator
account be disabled. This will affect only the Administrator account and not
the Administrators group.

Power User

Within the user account hierarchy, the Power User has limited
administrative powers but still has more than a standard user. The Power User
group is included in current Windows operating systems in order to provide
compatibility with legacy Windows versions such as XP and earlier.

Guest

The Guest account is limited in its capability since it can only
create or modify objects in the guest account folder structure. The Guest
account cannot make any changes to any files or folders elsewhere on the PC.

The Guest account is disabled by default. Enabling the account
can be accomplished by clicking its icon on the login screen or by accessing
Local Users and Groups in the Computer Management window in Control Panel > Administrative
Tools. Even though the Guest account is a restricted account, please password
protect it. Shown below is the Guest account page showing the default settings.

Guest account disabled

Standard user

The Standard User account provides the best balance between
privilege and security. Identified in the system as simply “Users,” Standard
Users are allowed to run applications, perform common actions, and access most
areas of the system without the need for administrative intervention. Activities
that require access to system components, such as adding hardware or a software
program, will trigger a UAC prompt and in some cases will require the
administrator password. When Standard User accounts are created, Windows will
ask if a child will be using this account. If so, use Parental Controls (Windows
7) or Family Safety (later OS versions) to rate, monitor, and restrict the
account.

New users are created as Standard Users by default.

Set Standard User

NTFS vs. Share
permissions

NTFS and Share level permissions both provide a customizable level of security. Share level permissions are set on the share by the owner. NTFS permissions are set as a security property. NTFS and Share level permissions differ in some key aspects.

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Share permissions manage access at the folder level. In contrast,
NTFS allows every file to have individual and varying accessibility if desired.
Share permissions are used for compatibility with the FAT32 file system and
support three permissions: Read, Change, and Full Control. NTFS can manage
these attributes as well as others including Write, Modify, Read, Execute, and Special.
There are instances where share permissions and NTFS permissions are
essentially the same, such as Change in share and Modify in NTFS. Since both
permission types are independent and their values are combined, the more
restrictive combination is applied in order to determine permissions. This is
in contrast to an NTFS to NTFS cumulative result which is less restrictive.

Allow vs. deny

Allow versus deny can be interpreted as allow versus not allow.
The deny permission is the strongest and will take precedence regardless of the
weaker permissions applied. A group can be granted access to a folder and in
NTFS, a specific user or users in that group can be given a deny permission. In
this case even though the group is allowed access, that particular user’s deny permission
overrides all others.

Moving vs.
copying folders and files

Moving content from one location to the other can be accomplished
through several ways including from a command prompt or simply by dragging and
dropping. The method used should be determined by the desired result. Should
the content exist in both the source location and the destination? Should the
content be removed from the source and exist only at the destination. As expected,
copying the content results in the file being present at both locations while moving
the content results in the file being only present at the destination. The
command prompt allows files to be copied using the Copy command, files and
folder structure to be copied using the Xcopy command, and files and folders to
be copied using Robocopy (the newer, faster replacement for Xcopy). Both Xcopy
and Robocopy retain the content’s permissions when using the correct syntax.
For those who wish to use the GUI, transferring files is as simple as dragging
and dropping, then choosing Move or Copy when the option menu pops up.

Copy Operation in GUI

Cut and Paste can also be used similarly. Right-click on your
source object (file or folder), choose Cut or Copy, and then right-click and
click Paste at the destination. Remember that for an NTFS source, the
destination file structure must support NTFS otherwise the source permissions
will be lost. When copying/moving NTFS to NTFS on a different volume, the file
or folder will receive the cumulative permission set. This means that the
permission sets will be compared and when a conflict exists, the least
restrictive values will be used.

File
attributes

Operating systems including Windows indicate an object’s
attributes in their file structure using one or more of these alpha
designations.

Here is a list of them with a brief description.

A = Archive: This attribute is used by backup programs and other
utilities to indicate that the file is ready for backup (archiving). After a
file has been backed up, the Archive bit(value) is set to zero or off. If a
program makes a change to a file, it will reset the bit to one indicating the
need to include it in the next backup. This setting makes incremental backups
possible by only archiving objects that have changed.

D = Directory: This setting indicates that the object is a
directory, not a file.

H = Hidden: This setting indicates that the object is hidden
from normal view. System files and folders are routinely hidden. In the GUI, the
View setting will allow these files to be shown. When displayed, hidden files will
be gray to visually differentiate it. A user may not be able to access this
content without the administrator’s help.

I = Not Content Indexed: This setting indicates that the object
is not indexed. Indexing, which is off by default, allows the operating system to
perform faster searches. Objects that have this bit turned off will be included
in searches.

R = Read-Only: This setting indicates that the object cannot be
altered without resetting this value to off. Interestingly, Read-only protects
a file from being altered but does not protect it from deletion.

S = System: This setting indicates that the object is a system
file or folder and coupled with the read-only setting, prevents tampering. Do
not delete or modify these files.

Shared files
and folders

Administrative
shares vs. local shares

There are two types of shared folder objects: administrative shares
and local shares. Local shares are created by users and are accessible by those
with the appropriate permission. Administrative shares are generally used by
administrators to access system drives and areas that are not generally shared.
All four administrative share names are appended by a $ while the local share
has a common name.

Permission propagation

Permission propagation occurs when a container object (folder)
is shared by its owner. Upon sharing, the owner can determine how much of the
folder’s contents will receive the same set of permissions. This will affect how
the files and folders within the container are treated by the OS. When applying
permissions, there will be an option to apply the permissions to the containers,
folders, subfolders, and files.

Inheritance

Inheritance describes the way permissions are handled within a
shared folder. Depending on the settings, the Child folders, subfolders, and the
original share folder may or may not receive the permissions applied to the
Parent folder.

System files
and folders

System files and folders are always classified as Read-Only and are
usually hidden. Doing this helps protect the system from deliberate or
unintentional damage. Standard users never see these files and folders, thereby
keeping everything safe. Shown below is a hidden system folder and its
properties. Note that the folder in question is grayed out. That’s the first
sign to stay out. In the properties, notice the read-only setting which applies
to the files in the folder. (Show Hidden System Folders)

Hidden System Folder Properties

User
authentication

Single sign-on

Single Sign-On (SSO) identifies the practice of permitting a
user and their programs to use a single set of credentials to automatically log
into permitted sites and services. This saves the user the trouble of entering
their login information for each website or secure location they visit. A good
example of SSO is a Microsoft account. If the same login is used, each device
will share access to different online accounts such as online storage and email.

Run as
administrator vs. standard user

A standard user, as a member of the Users group, is allowed a
useful but limited level of activity.  For example, there may be programs
that require direct disk access or other system level operations that are
outside the scope of the standard user. Using the runas command, with the user
name and program name, at the command prompt will elevate the user’s privileges
to administrator. This can also be accomplished by right-clicking the program’s
icon or the Start menu shortcut and choosing “Run as Administrator.” Attempting
to run a program that requires administrative privilege will result in a UAC
and possibly require a password.

Bitlocker

BitLocker Drive Encryption is a data protection feature that is
used to encrypt the data on an entire disk. This encryption feature uses the
host machine’s motherboard in order to develop the encryption method. BitLocker
will not decrypt the disk without the TPM chip which is hardwired to the
motherboard. On systems without a TPM chip, a portable USB key is produced
during encryption and can be used to decrypt the contents of the drive.

Bitlocker-To-Go

Bitlocker-To-Go is BitLocker for external and portable devices.
Since it is portable, the TPM chip is ignored in favor of a password. The
password should be saved either to a local drive or by printing it.
Bitlocker-To-Go was introduced in Windows 7. Earlier versions of Windows will
be able to read from the portable device but will not be able to write to them.

EFS

In order to encrypt specific files and folders without using
whole disk encryption, NTFS offers the Encrypting File System. Access the
properties of the folder or file you wish to encrypt and check the “Encrypt
contents to secure data” box.

Advanced EFS Encryption

That’s all for Objective 2.6! Hope you enjoyed it and hope you solidified your skills a bit. Good luck on the test!

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