The ACL is a security and access component of Operating Systems. It contains a set of entries that determine who and what has access to a specified physical or logical system object.

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Linux ACL for students test submission, Create, Append, Delete but not Read for others

There should be a TO Folder on a Samba-Share, where everybody is allowed to create files, edit and delete them. But one user should not be allowed to read the files others have created. The main idea ...
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40 views

Why is current CPU frequency read-only for root?

I have a program that provides benchmarks, but its OS agnostic and does not know how to read CPU frequencies. The test program is driven through a script. If I provide the CPU frequency, then the ...
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16 views

How to make an exact copy of a directory to an another partition?

I have a 20Gb folder on an ntfs drive. How can I make an exact of only that folder to an another ntfs volume? By exact, I mean, copy pemissions; keep directories hard links (if any); and keep ...
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53 views

How to add a SID to a folder permissions

How can I add a specific SID to a folder's access control list? I'd like to give it permission to read. I'd like to have the final ACL look like this:
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43 views

Tampered with System Volume Information… Now I Need Default Permissions. Doh

I'm using Win7, I changed my SYS-VOL-INFO folder permissions to take a peek inside, and I forgot to take note of the default permisisons (ACL's). I found a website, that isn't Microsoft, that claimed ...
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18 views

KVM mounting a directory with p9 driver and right permissions

I run virtual machines with KVM (libvirt) in Ubuntu. So there you can mount a local filesystem of your host machine using p9 drivers (http://wiki.qemu.org/Documentation/9psetup) Now I only found ...
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43 views

Setting NTFS permissions to share root breaks inheritance

I'm having an issue with Windows 2012 R2 where setting NTFS permissions on the root of a share breaks inheritance, and the NTFS permissions are effectively replaced with the new ACE. The only way I ...
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29 views

How do you set Linux ACL to default to a specific group with permissions?

So I have a directory: www\ which looks as so: [eugene@server ~]$ ll total 0 drwxrwx---. 2 eugene eugene 57 Dec 10 16:04 www I want to make it so all new files created in this directory will ...
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23 views

Is it possible to add more than one AWS ACL to a subnet?

I currently have hit the max number of entries in my existing AWS Access Control List (ACL). Every couple of weeks a few new IPs try to attack my servers and I am unable to add any more "DENY" entries ...
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314 views

Meaning of starting d and starting l in drwxr-xr-x and lrwxr-xr-x

There are two files with the permission strings drwxr-xr-x and lrwxr-xr-x. I was wondering what the starting d and starting l stand for?
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434 views

Does Windows copy file permissions with copied files?

When I copy a file from one location to the other will the destination keep the original permissions or will it take the copied files permissions?
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44 views

Manually-generated excel files versus computer-generated reports/files

Why is it the data in a user-generated report (e.g., manually encoded journal entries in an excel file) are destroyed once I append or merge them using Audit Command Language or windows cmd? Like for ...
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76 views

samba4 acl for allowing group access to files created by a user

I've just setup samba4 as an Active Directory domain controller. (samba v4.3.0, installed on ubuntu x64) It's used in a small accounting office. The office has a number of file shares. I've given ...
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72 views

Cannot read directory “(name)”: File exists

I am trying to update a Windows 7 installation to Windows 10, but the procedure is failing repeatedly at step MIGRATE_DATA. Investigating what could prevent the migration, I found two corrupted files ...
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33 views

Is there a Linux `setfacl --test` equivalent for BSD?

The Linux version of setfacl, as opposed to the BSD version has that very handy --test option: --test Test mode. Instead of changing the ACLs of any files, the resulting ACLs are ...
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146 views

Clean way to preserve permissions in backups from Linux stored on NTFS

With cygwin, rsync and SSH I have set up a backup mechanism that copies all of the vServers (running Debian) contents to my local NTFS hard drive (running Windows 10) and it works. Partially. I use ...
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34 views

OpenZFS ACLs on OSX

I mistakenly did a chmod ug+rwX rather than chmod ug=rwX and have now gained a host of ACLs on the folder and I cannot get rid of them. It is really screwing things up with shared use and rsync to NAS ...
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176 views

How do I set default (not inherit) acl permissions on file creation?

This is with a freenas box (FreeNAS-9.3-STABLE-201506292130). In debian-based linux generally there is a default permissions of 644/755 for files/directories (now 664/775?). As I understand it, this ...
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80 views

how to insert a text file in hosts.allow or hosts.deny?

So I read in man page of hosts.deny that i can input files in /etc/hosts.allow or hosts.deny to input ip addresses which i want to block or deny. So i tried doing this in hosts.allow sshd: ALL ...
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53 views

Linux (POSIX) file ACLs: is it possible to set a default ACL for a single user ONLY?

POSIX file ACLs: is it possible to grant default read access for a specific user to new files/directories within a directory, without setting default ACLs for user::/group::/mask::/other::? On a ...
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89 views

Setting file permissions doesn't propagate to newly created subdirectories/files

How can I set the ACL permissions for a directory, such that newly created sub-directories and files receive the same read, write, and directory execute permissions as the parent directory? I've ...
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24 views

Grant full access to the contents of a directory to a user

I have a directory that has directories created in it, and files created in those directories. There are several layers of directories that are generated. The files and directories are created ...
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100 views

windows xp Professional restore Security Descriptors after cacls /t /e /p

Someone changed the permissions on a bunch of machines using cacls which fixed one problem but created a bigger one. I'm looking at ways to revert this but can't seem to get it back to the way it was. ...
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64 views

How to set Permissions and Owner/Group to be used for file creation?

Legend: Owner/Group e.g. AccountUser/Nobody On a web server (apache), I have a folder (chmod 775, AccountUser/Nobody) which I move uploaded files into. A web-based script running as Nobody is used ...
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107 views

How to change permissions on a folder when the owner doesn't have read access and no one else has change permissions enabled?

So the basic scenario is this. UserA creates a folder with a few subfolders and documents. UserB comes along and changes the permissions on the folder and subfolders so he can list folder contents and ...
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168 views

POSIX and ACL permissions Mac Server

I have a mac mini server and have a script run at login for network users that mounts a shared drive on the mac server. When they mount up, I create a folder with their name as the folder name. What ...
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408 views

SubInACL using accent in usergroup name returns error 1337

I'm trying to reset my registry permissions to default because something modified it and causing some problems. But when I replace the "Administrators" usergroup name with the translated one which ...
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1answer
220 views

Trying to inherit parent permissions but setfacl doesn't work as intended

I'm running Ubuntu Server 14.04.2 LTS and I've installed acl using sudo apt-get install acl. I'm trying to create a www folder under /srv that the web server has read/write access to in addition to ...
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91 views

Undo setfacl changes

Using Cygwin in a virtual machine, I ran this command setfacl --remove-all /cygdrive/c After that I noticed this message: C:\ is not accessible. Access is denied. I undid this change by ...
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115 views

Squid specific configuration for multiple listening ports

On my entirely Linux-based home network I've a running Squid instance. I've setup Squid to listen to multiple ports, and I want to give a few people access to different ports but with a specific set ...
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360 views

Exporting raw data of Checkpoint Firewall

I am looking to export a Checkpoint configuration to a Excel document (HTML or XML would also work). However, one requirement is to have the configuration showing the rule base with IPs ONLY (no ...
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128 views

ACL inter-vlan routing

I need to configure access control list on layer 3 switches for a some school's: Now the PC's from one classroom can access the PC's from the other classroom. How can I configure that they only can ...
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47 views

Removing lines in text document that end the same

We have a script that downloads a list of domains for our squid box to block, but we keep getting warnings like the following: 2015/03/02 17:08:47| WARNING: You should probably remove '.artnau.com' ...
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64 views

umask linux incorrect file permissions

id buser - umask 0022 - group - appgrp directory /sample/sftp getfacl sftp # file: sftp # owner: appsdr # group: appgrp user::rwx user:590:rwx user:15003:rwx group::rwx mask::rwx other::r-x now ...
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85 views

Invalid hostname in HELO sent by MUA

I have a mail server running exim4 with an ACL that drops the smtp session if the hostname in HELO is an IP address. Exim is configured to do the reverse dns check. The said ACL is the very first one ...
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15 views

Setting ACL for group read access

Let me introduce you to margaret and pepijn, my two LDAP users. Pepijn is at the bottom of my non-existent corporation's food chain and is therefore member of only one LDAP-group: pepijn@srv:/$ ...
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408 views

Ntfs permission error

We occasionally observe damaged permissions on folders with the error: No permissions have been assigned for this object The affected systems are mostly Windows 7 but also Terminal Server 2008 and ...
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3answers
110 views

Inheriting file permissions

I currently have an AirPlay audio streaming service (Shairport) running on Raspbian on my Raspberry Pi. I have it configured to save the metadata for the songs that are played. For every song, it ...
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505 views

How is access denied on Avira file ipmgui.exe?

I can't modify anything of the ACL of the ipmgui.exe file (or any file of Avira in the same directory). It's not working at all with any cacls line tried, even under a system prompt!  I'm not sure at ...
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334 views

Remove inherited permissions with SetACL

I'm using SetACL as an alternative to icacls to process objects' DACL SACL and ownership. After reading the documentation, I see that the clear parameter clears the ACL of any non-inherited ACEs, ...
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464 views

Autoit fails to create registry key where regedit does

I wrote a AutoIt program that use RegWrite to add several registry value. I tested it as 'Domain Admins' and it fail to write, I runned it as local 'Administrator' and the values where changed. I ...
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145 views

How can I allow my regular user to chown files, via setfacl?

I am using ACL to set specific permissions in a directory: setfacl -R -m u:wordpress:wrx /var/www/html/wp As that user, I am able to create a subdirectory within the directory with mkdir test, but ...
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485 views

Use /sys/class/gpio/ in Python without root permissions

I want to interact with the GPIO pins using the Python module Ablib. And I want to do this without root permissions. How can I achieve this? When I create an ablib.Pin instance the module opens ...
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22 views

Is there a way to use ACL to deny access to folders by user, preferrably by making them invisible?

Is there a way to use Linux's Access Control Lists feature to deny access to folders by user, preferrably by making them invisible? This is needed for a chroot SFTP environment where we want to block ...
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92 views

Is it possible to hide directories on share using Apple ACL?

I'm just setting an office server running Maverick Server. I can setup control to directories and block some users or group from accessing certain things. However, I can't seem to find any way to ...
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182 views

How do NTFS Permissions Work with Deletion?

I have a folderA. I'd like a user (let's call him darth) to be able to do anything (create,read,write,delete) folders/files inside folderA , BUT darth should NOT be able to delete folderA itself. To ...
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93 views

Is there anyway you can restrict users from executing a command with another name?

I'm not asking an obvious question here. I would like to elucidate with an example. A user 'bob' is always executing 'chmod 777 /home/bob/impfiles' so that user 'alice' could make changes to the ...
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50 views

Preserve ability to set FACL

Using setfacl on linux, seems like only owner (and root) can modify the ACL via setfacl, is that right? If there is a directory owned by joe and joe grants rwx to marry, she can read any file, ...
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100 views

Windows VM is resetting file permissions on CentOS host

I have a CentOS host machine with a Windows 7 virtual machine in VMware. There is a shared drive on the host machine (NFS share with other machines on the network) which has been configured with ACLs ...
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42 views

Why do Protocol Service Multiplexers can take only ODD numbered values between 1 and 32,767?

I am following a book called Bluetooth Essentials for Programmers and I am not much experienced, in the book it doesn't explain the reason of the odd-numbered values and I couldn't find information ...