The Encrypting File System (EFS) on Microsoft Windows is a feature introduced in version 3.0 of NTFS that provides filesystem-level encryption.

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using EFS to encrypt the whole disk without password

I want to encrypt entire file system on ubutnu so that no one will be able to access its data by attaching the h.d.d to another system (using another OS). I am aware that I can use EFS tools, but my ...
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17 views

Why Add button in EFS doesn't exists?

I am trying to enable EFS on a folder and add some others users to access it too. but the Add button doesn't exist on the place it should be. I want to know what is the reason for that ?
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37 views

Windows 2012 Server File Encryption

I am looking for a solution to encrypt directories/files on a Windows 2012 server. Several Excel files will be stored in a share, and I am looking for a solution to encrypt them independently. From ...
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1answer
65 views

Preeseding a debian stable install with a complex partitioning scheme - missing physical volume

My personal systems run on: An open /boot partition separately random key encrypted /tmp and swap partitions and a password encrypted btrfs lvm volume holding everything else. My latest project is ...
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74 views

Unable to open/copy files on an encrypted UNC share after reboot of file server

I have 2 Windows 2012 environments. The first is a CMS that is accessing files on a the second server (file server). One of the shares that I have on the file server is marked as encrypted. When ...
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1answer
172 views

Prompt for Certificate Password When Accessing EFS Shares

My boss wants to set up encrypted file shares using EFS on Windows Server 2012 R2 Boxes accessed by Windows 8.1 clients. I've been able to set the default DRA, issue certificates in test cases and so ...
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77 views

EFS decrypt access denied

I have a very weird behaviour here on a Windows 7 box (in AD). The user has (good boy) stored the files encrypted with EFS on his local disk. When he wants to open a file, e.g. in Word, he receives ...
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1answer
430 views

EFS - how to disallow encrypted files on network share?

I have two servers, both on domain, both Windows Server 2008 R2, to my eye almost identically configured. Server1 allows to copy encrypted files to his network shares, Server2 gives error when trying ...
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1answer
81 views

Does filesystem encryption strain SSDs?

For security purposes we are required to implement full filesystem encryption on an upcoming server installation. We use the default encryption settings shipped with CentOS 7. My question: as our ...
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1answer
128 views

Decom old CA and Basic EFS certificates

Getting very close to decommissioning our old CA. The new CA is in place and happily issuing certificates and the old CA has had all the templates removed so no certificates will be issued. My ...
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1answer
261 views

EFS Recovery Agent not working

I know EFS data recovery has been discussed so many times in the forums but I could not find anything useful in the other threads as I believe I have followed all the required steps but still cannot ...
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76 views

Apache DocumentRoot folder encrypted with EFS

As per this question http://stackoverflow.com/questions/7575709/newly-added-files-getting-permissions-error Apache 2.2 is not supposed to be able to access its DocumentRoot if the folder has been ...
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2answers
342 views

Decrypt EFS files when copying to windows shared

My users have their documents redirected to a share on a file server running NTFS - very regular setup. EFS works and the users are able to encrypt a folder and files in their redirected documents. ...
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1answer
159 views

Current state of EFS

I need to encrypt a 3.5TB folder on 2008 R2 server. The folder is shared and both users and applications need to access the files(pdf) in it over the network. Since the server is a VM (ESXi 5) ...
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1answer
298 views

Windows Task Scheduler cannot access EFS encrypted folder despite running as a user with access

I have a batch file set to run via Task Scheduler in Windows Server 2008 R2. The batch file is being used to rotate and compress MySQL logs, and the folder containing these logs is encrypted using ...
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1answer
1k views

Using another user's EFS Certificate

On a domain joined computer, can you encrypt a folder using EFS and then export your certificate/private key and then login as another user and import it to view the encrypted files? I have tried ...
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133 views

Safe filesystem encryption using mdadm and cryptsetup in EC2

I need to safely store some encrypted information in EC2. For this purpose, I'd like to encrypt a filesystem on my EBS drives to ensure that third-parties won't be able to poke around in my data. ...
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1answer
34 views

How to encrypt a user and specific services on a Mac Server?

I am setting up a server in an office, and we want to encrypt the hard drive so that in the event of a physical breach, the data is secure. We initially used FileVault2, but since we need to be able ...
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2answers
581 views

Gain access to other people's encrypted files

For a proof of concept I am building a server which will host 2 users. Both users are local admin, and both users are domain users. User1 will encrypt the files with EFS so he can get transparent ...
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1answer
267 views

Access denied to EFS encrypted files after PC joins domain

I'm experiencing strange behavior with Windows Encrypted File System: I have a machine that is in workgroup mode (not joined to a domain) I encrypt an entire directory structure on the machine ...
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1answer
251 views

Encryption strategy for CentOS on Amazon EC2

Although there is plenty of information about how to create encrypted partitions (like http://silvexis.com/2011/11/26/encrypting-your-data-on-amazon-ec2/), there's not much information suggesting what ...
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119 views

EFS encrypted Office documents lose additional users after saving the file

I create a new Word document in 'Office Open XML' format (docx). I then encrypt it using EFS and add several other users to access the file. Now I open the document and edit it, after saving it, the ...
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1answer
479 views

How to setup Samba4 to enable NTFS encryption? [closed]

I'm currently giving the sernet.de samba4 (rc1) appliance a shot (running inside vmware player on Windows 7). Providing a share is no problem, but the client still can't choose to encrypt files. What ...
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1answer
653 views

EFS Remote Encryption

We have been trying to setup EFS across our domain. Unfortunately Reading/Writing file over network share does not work, we get an "Access Denied" error. Another worrying fact is that I managed to ...
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1answer
1k views

Replicating EFS encrypted files

Recently I attempted to configure Microsoft's DFSR on Windows 2008 R2 to replicate a folder which was encrypted with EFS. The setup gave no errors or warnings, but later I read that DFSR does not ...
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166 views

POP connector Exchange Server 2010

An old server with Exchange 2003 is being replaced with a new 2008 R2 server (x64) running Exchange 2010. On that 2003 machine we had a tool called EFS (Email Forwarding System) but the tool is old ...
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FreeBSD encryption concept: automatic boot without password or key, when mounted by another system?

Recently, i installed FreeBSD for work and geli for encryption. (Full disk encyrption without boot partition.) When I finished getting it setup, I found that every time it boots, I need to enter the ...
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378 views

How to deal with LVM encryption on remote restart?

Is there a way to handle the LVM mounting password remotely? This is usually presented during boot on the main console (where the machine physically resides at). I am able to ssh in during the ...
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2answers
374 views

Can root become user and access encrypted home?

The home is mounted unencrypted on login. I tried accessing it after doing 'su sampleuser', but it was encrypted, which is the expected behavior I guess. I also tried changing the user's password, ...
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180 views

add certificate to all files in EFS-folder with script

I try to set up collective access to EFS-folder. I want to add certificates of all users to all files in folder. Is it posible do with using powershell scripts or some another way? Thanks.
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185 views

Can user protect his files from untrusted administrator? [closed]

I am looking for means to prevent my Windows administrator from accessing my files. My plan is to cipher my files with EFS. As far as I know administrator can access ciphered files if he has EFS ...
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1answer
636 views

Sharing EFS encrypted

I have standalone, nodomain server. EFS is used on this server for one folder. How to share the encrypted folder? Users on the server are created locally. I tried to export the owner folder ...
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1answer
573 views

Group Policy Recovery Agent EFS not being used

I am trying to get EFS working on our workstations. First when I tried to set a directory to be encrypted I got a warning about the Recovery Agent certificate being invalid. It turned out that the ...
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1answer
144 views

EFS encrypted files cannot be opened, even with the right key

I created a folder on my Win7 Pro machine, set it to encrypt contents to protect data. Then I opened MMC, added the Certificates snap-in for "my user account", expanded Certificates - Currrent User > ...
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72 views

Ensuring no EFS files remain on a Windows XP SP3 system

Lets say I have a user in my organization who has forgotten his/her Windows logon password to their office computer. As an IT manager, I can log in via the Administrator and reset that user's ...
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2answers
778 views

Disabling EFS--what to do if there are any encrypted files?

I am in the process of retiring an old Windows-integrated CA and bringing online a new, properly-configured one (several, actually). Most of our systems are unable to use EFS thanks to Group Policy... ...
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EFS over network

Two Windows 7 computers, NON-AD environment. An identical username/password exists on both machines. If I use EFS to encrypt files on computer 1, then install the EFS certificate on computer 2, ...
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2answers
1k views

How to mount LUKS partition securely on server

I'm curious if it is possible to mount a partition encrypted by cryptsetup with LUKS securely and automatically on Ubuntu 10.0.4 LTS. For example, if I use the key for the encrypted partition, than ...
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1answer
132 views

Why make random file for loopback device for encrypted file system?

I have read a few tutorials on setting up an encrypted file system using cryptsetup. They all start with the following creation of a random file dd if=/dev/urandom of=/etc/cryptfile bs=1M count=10 ...
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2answers
115 views

Keeping a Secret

I have a .NET Windows Service that needs to store a secret on the machine and protect that secret from local system administrators. It is OK if domain admins have access. This secret is not user ...
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3answers
541 views

EFS encrypted file, impossible to delete

I have a SBS 08. A user received some files send from a mac. He unzipped it with his windows 7 locally and copied it on a network shared drive on the SBS. The files (some fonts) were already in green ...
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2answers
2k views

Large temp files created in Windows Server 2003 temp folder

I'm managing a Windows Server 2003. A couple of times the server has crashed with error message saying that the C: drive is full. After searching folders to free up space, I found that lot of temp ...
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1answer
196 views

Linux crypted filesystem : is there actually big issues?

as a SaaS provider with sensitive informations we think about crypted filesystem (under Linux) but is there any problem about performances or maintenance if the filesystem crash? We want to use it on ...
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1answer
646 views

Fix a Truecrypt Volume

I've have a backup volume using truecrypt (USB Disk, entire disk (eg /dev/sdb)) accidentally added to a Windows System and then using windows that disk has been initialized. No other action has been ...
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1answer
405 views

Debug USB Mouse/Keyboard on Windows XP?

I have an older hard drive that has some EFS data on it. I tried booting from the HD, but as soon as the Windows boot, the USB Mouse and KB goes off. The HD has an older version of Windows so it's ...
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1answer
2k views

How secure is encfs

Like others on this site, I am considering using encfs + sshfs for secure offsite backups. I am wondering how robust encfs is to brute force attacks? Do some users use the --stdinpass command with a ...
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2answers
259 views

Windows EFS file sharing anomaly

Fyi, I can confirm this happening in Windows Vista (Business) and Windows 7 Professional in WORKGROUP mode (as both a client and a server). I am not totally sure if this is a Superuser question or a ...
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2answers
221 views

Decrypting EFS w/o altering timestamp - possible?

I'd like to decrypt some EFS-encrypted files, but I do not know how to do that without altering the timestamp. When encrypting/decrypting files, the modified-time is set to the current time. I'd like ...
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1answer
160 views

Recover EFS encrypted files

I have a machine here that is joined to a domain. Some days ago, I did a disk image of that workstation because the HDD was begin to fail. I put the new drive in the machine and the user now complains ...
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110 views

How can I make a dm-crypt folder world writeable?

I've set up an encrypted directory with dm-crypt. how can I make it world writeable (for my ftp server)?