A SharePoint 2010 team site can have all the elements of an authorization
model — people, groups, and permissions, in other words — but still not be
secure. The deciding factor in securing SharePoint’s content lies with the
permission assignments made on securable objects such as sites, lists, and
libraries. A permission assignment consists of permissions, principals
(users and groups), and securable objects.
Permissions are the smallest unit for managing security in SharePoint.
Permissions confer rights, such as View Pages rights or Add Items rights, that a
user may have. In SharePoint, you deal with following three permission
types:
-
List: Permissions related to accessing lists and list items.
-
Site: Permissions related to accessing sites, pages, and permissions.
-
Personal: Permissions related to creating personal views of web pages.
When managed properly, you never have to work with permissions on a
case-by-case basis because permissions are never assigned directly to
principals. Rather, they’re assigned to permission levels, which are
assigned to default SharePoint groups. You can also assign permission levels
directly to user accounts or custom SharePoint groups you create.
Follow these steps to view a list of permission levels for a site:
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Choose Site Actions→Site Permissions to access the site’s People and Groups page.A list of groups and their corresponding permission levels appear.If you’ve assigned permission levels to user accounts or domain group accounts outside SharePoint groups, you see them listed hereEach site inherits its site permission assignments from its parent site or has its own unique permission assignments.
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Click the Permission Levels button on the Ribbon.The Permission Levels page appears. You can use this page to create new permission levels or modify existing ones.
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Click a permission level, such as Contribute, to view or modify the permissions in the permission level.
Keep in mind that the Permissions Levels page doesn’t really show
individual permissions. Instead, the page shows permission levels.
The following table lists the permission levels, the rights they grant, and
the SharePoint group they’re assigned to by default.
Permission Levels
Permission
Level
|
Rights
Granted
|
SharePoint
Group Assigned to by Default
|
Full
Control
|
Wield
administrative access
|
Site Owners
|
Design
|
Change the site’s look and feel
|
Designers
|
Manage
Hierarchy
|
Manage
the site’s structure and permissions
|
Hierarchy
Managers
|
Approve
|
Approve content
|
Approvers
|
Contribute
|
Add
and modify content
|
Site Members
|
Read
|
View all content, including
history
|
Site Visitors
|
Restricted
Read
|
View
and open
|
Restricted
Readers
|
Limited
Access
|
Open (same as guest access)
|
Quick Deploy Users
|
View
Only
|
View
items and pages
|
Viewers
|
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