APC Snap Server 2200 Specifications download pdf (Page 67)

Setting File and Folder Permissions (Windows)

Chapter 6 Share and File Access 53

To Set File and Directory Permissions and Inheritance (Windows)

Using a Windows NT 4.0, 2000, or XP client, map a drive to the Snap Server,

logging in as a user with change permissions for the target file or directory.

Do one of the following:

• In Windows NT, right-click the file or directory, choose

Properties

, click the

Security

button, and then select

Permissions

• In Windows 2000, right-click the file or directory, choose

Properties

, and then

select the

Security

tab.

Use the Windows security tools to add or delete users and groups, to modify

their permissions, and to set inheritance rules.

How the GuardianOS and Windows Differ in Processing File-Level

Access Permissions

The GuardianOS processes access permissions differently than does the Windows

operating system, allowing administrators finer granularity in devising a file access

strategy. When a user attempts to perform an action on a file and directory,

Windows collects all permissions that apply to the user before deciding whether to

allow the user to perform the action. The GuardianOS, on the other hand, uses the

first applicable permission it finds to decide whether to allow the user to perform

the action. The GuardianOS searches for access permissions in the following order:

1. User owner 2. User 3. Group owner 4. Group 5. Everyone

When a match is found, the search stops and the specified access permission is

applied. Assume the user joan brown is attempting to modify the file settings.doc.

Joan brown is a member of the group sales. As a user, jbrown has read-only access to

the file; the group sales has read-write access to the file, as follows:

settings.doc: username:jbrown:RO; groupname:sales:RW

The following table shows how Windows and the GuardianOS treat these settings:

In this case, Windows would grant write access to Joan Brown, allowing her to

modify the file. The GuardianOS, on the other hand, would not allow Joan Brown to

modify the file.

Type Access Windows GuardianOS

jbrown Read-only Match found for jbrown, read

access found, continue searching

for necessary access

Match found for user jbrown,

stop searching and prevent

user from modifying file

sales Read-write Match found for group sales,

read-write found, allow user

jbrown to modify the file

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APC Snap Server 2200 Specifications Page 67

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