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Topic: File system permissions

	File system - Wikipedia, the free encyclopedia
		File systems may use a storage device such as a hard disk or CD-ROM and involve maintaining the physical location of the files, or they may be virtual and exist only as an access method for virtual data or for data over a network (e.g.
		The file system software is responsible for organizing these sectors into files and directories, and keeping track of which sectors belong to which file and which are not being used.
		A disk file system is a file system designed for the storage of files on a data storage device, most commonly a disk drive, which might be directly or indirectly connected to the computer.
	en.wikipedia.org /wiki/Filesystem (2606 words)

	File system permissions - Wikipedia, the free encyclopedia
		The permissions to be assigned are determined using umasks.
		When a file for which this permission has been set is executed, the resulting process will assume the effective user ID given to the user class.
		When a file for which this permission has been set is executed, the resulting process will assume the group ID given to the group class.
	en.wikipedia.org /wiki/File_system_permissions (1198 words)

	Chmod - Wikipedia, the free encyclopedia
		When executed, the command can change file system modes of files and directories.
		The classes are used to distinguish the users to whom the permissions apply.
		The modes indicate which permissions are to be granted or taken away from the specified classes.
	en.wikipedia.org /wiki/Chmod (798 words)

	ONLamp.com -- An Introduction to Unix Permissions
		Note that the owner of the file is listed after the permissions; the primary group of the file is listed after the owner.
		This is followed by the size of the file in bytes, the date and time the file was last modified, and finally the name of the file.
		What a person can actually do with a file depends on both the file's permissions and the permissions of the directory the file lives in.
	www.onlamp.com /pub/a/bsd/2000/09/06/FreeBSD_Basics.html (711 words)

	How to configure file sharing in Windows XP
		These permissions apply to the folder, all the files in that folder, child folders, and all the files in the child folders.
		Files and folders that are created in or copied to a folder inherit the permissions that are defined for their parent folder.
		When Simple File Sharing is turned on, remote administration and remote registry editing does not work as expected from a remote computer, and connections to administrative shares (such as C$) do not work because all remote users authenticate as Guest.
	support.microsoft.com /?kbid=304040 (2624 words)

	iqexpand.com (Site not responding. Last check: 2007-11-05)
		An analogy is to think of the storage as human memory, with the hard disk as long-term memory, and the RAM as short-term_memory.
		Systems can be made more secure by storing programs and static data in immutable storage, where they can't be changed by an attacker.
		File system permissions can be used to make certain areas of the hard disk logically immutable.
	computer_storage.iqexpand.com (1007 words)

	Redbrick Helpdesk: File Permissions and chmod (Site not responding. Last check: 2007-11-05)
		File permissions are important, they specify what you let people do to your files.
		This allows people to 'read' your files, for example to go into a text editor and load up a text file, however, read is all they can do, they can't edit it and save the changes, delete, or move the file but they can copy it into their own directory.
		If there were no permissions there and you tried to take them away, then it will simply ignore it and carry on trying to remove the other permissions, if any others are specified to be removed.
	www.redbrick.dcu.ie /help/tutorials/chmod (939 words)

	CVS--Concurrent Versions System - File permissions (Site not responding. Last check: 2007-11-05)
		CVS tries to set up reasonable file permissions for new directories that are added inside the tree, but you must fix the permissions manually when a new directory should have different permissions than its parent directory.
		does not affect the file permissions in the working directory; such files have the permissions which are typical for newly created files, except that sometimes CVS creates them read-only (see the sections on watches, section Telling CVS to watch certain files; -r, section Global options; or CVSREAD, section All environment variables which affect CVS).
		Some operating systems have features which allow a particular program to run with the ability to perform operations which the caller of the program could not.
	theoryx5.uwinnipeg.ca /gnu/cvs/cvs_13.html (544 words)

	Articles - File system (Site not responding. Last check: 2007-11-05)
		More traditional examples are FTP connections are not handled by a dedicated application, but instead the ftpfs server mounts the remote hierarchy as part of the local filesystem hierarchy, and is accessed as if the remote files were local.
		All this file systems are organized with the help of private, per-process namespaces, allowing each process to have a different view of the many file systems that provide resourced in a distributed system.
		The Inferno (operating system) operating system shares with Plan 9 all this ideas and concepts.
	www.centralairconditioners.net /articles/File_system (2440 words)

	Managing Windows NT file system permissions
		Files are also a good example, because even small systems have a large number of them.
		SAT has to deal with file access permissions not only of a single computer, but also with a whole computer network divided into logical clusters, which are called Windows NT domains (see [1, p.
		Novell experts will notice that their system does not have these compression and overview problems, because the file security information is already stored as Trustees in compressed form within the file-system (Keywords: Trustees, run time inheritance, Bindary [7]).
	www.fim.uni-linz.ac.at /publications/SAT (3515 words)

	Unix Permissions
		Accordingly each file is associated with exactly one user (sometimes referred to as the owner) and one group.
		For each file there is an associated set of permission bits, each relating to one combination of permission and user class.
		Thus there are permissions: user read, which dictates whether the owner of the file can read it; user write, which dictates whether the owner of the can write to it; user execute: whether the owner can execute the file; group read whether users in the file's group can read the file, etc. etc.
	www.damtp.cam.ac.uk /user/hep/computing/permissions.html (1181 words)

	Retrieving NTFS Permissions with C++
		The file system driver is the nucleus of any file system.
		It manages all file system requests—creating new files, opening existing files, writing to files etc. The file system driver is a mediator between the operating system and the storage device drivers.
		You may view the specified permissions for any file or folder in the Security tab of the Properties dialog box in Windows Explorer (see Figure 1).
	www.devx.com /cplus/Article/16711 (640 words)

	Configuring File System Access
		You might want to enable access by an ASP application to a directory in the file system that is not contained in the ASP application root directory or its subdirectories.
		Before you change this setting, make sure that your ASP Server has permission to access only the files you want to be publicly accessible, and that it does not have access to sensitive files containing configuration or password information.
		You can restrict the permissions of the ASP Server by defining the user it runs under, and by making sure that that user has appropriately restricted file system permissions.
	docs.sun.com /source/817-2514-10/Ch3_ManageASP15.html (309 words)

	How Secure Is Encrypted File System?
		Once the system is booted from a floppy containing the third-party NTFS driver, the disk and all of its data becomes easily accessible.
		Encrypted files are accessible to anyone who possesses a private key, which is used to retrieve the symmetrical key encrypted with a public key (from the same key pair that the private key belongs to).
		Since environments in which EFS is implemented typically rely on roaming profiles (this ensures that the same private key is used across all encrypted files for the same user), the user profile is copied to the local system during every login.
	www.serverwatch.com /tutorials/article.php/2106831 (1254 words)

	FILE LINK CONTROL (with File System Permissions)
		The file must exist at the time that row is being inserted into the SQL table.
		The integrated file system is still responsible for managing permissions for the linked object.
		The permissions are not modified during the link or unlink processes.
	www.redbooks.ibm.com /pubs/html/as400/v4r5/ic2924/info/db2/rbafymst199.htm (182 words)

	Correct file permissions - The macosxhints Forums
		As for owner and group info, they are all owned by me, (my_user_name), and the group is 'unknown' for the OS 9 folders and 'staff' for the X ones.
		I also changed permissions in System folder/Preferences to 777 because some Classic apps couldn't write their preferences.
		I don't have all the answers for this but if it were me, I would use a spare partition to do a clean install of the system and set it up with all the same users names, passwords and privileges.
	forums.macosxhints.com /showthread.php?t=968 (515 words)

	[No title]
		When combined with some application's default file system permissions, their use allows a lower-privilege attacker, who is unable to stop services that have locked the files, to modify log files and obfuscate attacks.
		Inetinfo's file pointer into the log file is not affected; logging continues from the last point in the file.
		Even though the log file contents appear to be encrypted, this technique can be used to clear the entries in the log files.
	www.nmrc.org /pub/advise/20020114.txt (1122 words)

	Microsoft IIS: The Permissions Maze
		These permissions apply to only the individual user accounts or user groups for which they are set.
		When an HTTP request is made for server resources, such as files, the user's Web browser creates a request header containing information about the request such as authentication information, the HTTP verb requested, the IP address of the requesting party, and so on.
		NTFS permissions only apply to the individuals they are granted to and only for the object to which they are applied.
	www.microsoft.com /technet/prodtechnol/windows2000serv/technologies/iis/deploy/confeat/permmaze.mspx (2458 words)

	Apple - Mac OS X Server - File and Print (Site not responding. Last check: 2007-11-05)
		For Windows users, Mac OS X Server systems appear right in their Network Neighborhood — just like a Windows server — enabling them to browse folders and share files without installing additional software.
		You also have the flexibility to assign both allow and deny permissions, as well as a granular set of permissions for administrative control, read, write and delete operations.
		In addition, Mac OS X Server supports a file permission inheritance model, so user permissions are inherited when files are moved to the server and rewritten when files are copied on the server.
	www.apple.com /server/macosx/features/fileprint.html (811 words)

	Web Server Applications, Software Development and Consulting Services
		This varies slightly with each application, but the easiest description is to simply allow write permissions on all of the folders that the application is installed in.
		The File System permissions are controlled and effected by the underlying operating system, not the IIS web server.
		Enabling full access or write permissions for the IIS server's anonymous user account will not allow anyone to write files to the web server from their browser.
	www.xcent.com /FAQ/XcIBViewItem.asp?ID=390 (643 words)

	ADC141/CIC405 Tutorial 5 (Site not responding. Last check: 2007-11-05)
		Each file is a member of each group A person may be associated with a number of groups.
		Whenever you create a file, the file is given the group that you belonged to when you created it.
		File Directory Read: Able to read the contents Able to do an ls on the directory.
	www.cs.ntu.edu.au /sit/resources/ith406r/a141t5.html (365 words)

	jaredpar's WebLog : File System Permissions
		I did quite a bit of nix programming in college and was incorrectly relying on my knowledge of the nix file system particulars to answer this question.
		When a file lookup is done in Linux, the VFS layer starts at the base path and looks up every file system object from the start of the path to the actual file.
		If the current process does not have sufficient permissions to access any object on the path, the search fails (as it would for the Fall2005 object).
	blogs.msdn.com /jaredpar/archive/2005/07/25/443159.aspx (412 words)

	How to programmatically set NTFS file system folder permissions by using Active Directory Service Interfaces in ...
		How to programmatically set NTFS file system folder permissions by using Active Directory Service Interfaces in Microsoft Visual C# View products that this article applies to.
		These files are included with the software development kit (SDK) for Active Directory Service Interfaces 2.5.
		Select the domain account for which you are running this test, and then verify the permissions on the Test folder.
	support.microsoft.com /kb/899553/EN-US (480 words)

	CVS--Concurrent Versions System: File permissions (Site not responding. Last check: 2007-11-05)
		' files are created read-only, and you should not change the permission of those files.
		does not affect the file permissions in the working directory; such files have the permissions which are typical for newly created files, except that sometimes CVS creates them read-only (see the sections on watches, 10.6.1 Telling CVS to watch certain files; -r, A.4 Global options; or
		Using pserver, you will generally need stricter permissions on the CVSROOT directory and directories above it in the tree; see 2.9.3.3 Security considerations with password authentication.
	durak.org /cvswebsites/doc/cvs_13.php (528 words)

	HNS - Multiple Kerio Software Products Insecure default file system permissions Vulnerabilities
		As a result, anyone belonging to the 'Power Users' system group would be able to modify binary files of services running as LOCALSYSTEM, drop malicious DLLs the plug-ins folder or perform any change on the XML files where the service settings are stored.
		This three month window will allow system administrators the time needed to obtain the patch before the details are released to the general public.
		Privilege escalation, system and software tampering and the ability to alter service configuration are all real issues and all of them can be used as a second stage attack vector.
	www.net-security.org /vuln.php?id=3890 (793 words)

	The dreaded `s' bit (Site not responding. Last check: 2007-11-05)
		command even though this file is at the heart of your system's security.
		bit on certain files is vital to the operation of your system but this facility is unfortunately well known about and potentially one of the most dangerous security problems on any Unix system.
		Similarly, be careful when running commands for a user as root and either have `.' last in your path or not at all, to avoid root running a user's enhanced version of a system command instead of the real version.
	star-www.rl.ac.uk /star/dvi/ssn37.htx/node14.html (212 words)

	Hacks From Pax: Linux File & Directory Permissions Mistakes - The Community's Center for Security
		One common mistake Linux administrators make is having file and directory permissions that are far too liberal and allow access beyond that which is needed for proper system operations.
		A full explanation of unix file permissions is beyond the scope of this article, so I'll assume you are familiar with the usage of such tools as
		These programs are needed to perform tasks such as changing a user's password, since that requires a write to the system's password file which normally cannot be modified by anyone but root.
	www.linuxsecurity.com /content/view/119415 (991 words)

	WDVL: The wonders of the File System Object
		The file system object (FSO) is a wonderful tool that few web developers know about.
		The file system object (FSO) model provides a collection of very handy objects for accessing a computer's file system.
		The FSO is provided by Microsoft, and as such, the results for its use on non-Microsoft operating systems are questionable in the least.
	wdvl.com /Authoring/ASP/FSO/index.html (415 words)

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