Ubuntu Security :: Encfs: MAC Comparison Failed

Jul 7, 2011

I'm running 11.04 (64 bit) get the following in my syslog

[Code]....

1) Why is this happening
2) How can it be fixed
3) How can it be avoided

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OpenSUSE :: K-encfs Gui For 11.4 Failed

Jun 30, 2011

my os is opensuse 11.4. I tried k-encfs, but failed. Running the .rpm file said successfully installed, but I cant find the program and running the 'install' script gives me another error message.

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Software :: EncFS Failure - NFS Export Of A Reverse Encfs Mount

Apr 21, 2011

I have an NFS share hosted at a file server for several machines. I set up an encfs encrypted file tree in this. First, I created a directory in the NFS mounted tree where I wanted the encrypted files to be store (/home/nfs/phil/private). Second, I created a mount point where I wanted to access those files in the clear view (/home/phil/nfs-phil-private). Third I mounted encfs with the simple command "encfs /home/nfs/phil/private /phil/nfs-phil-private". During this mounting, it asked me for a pass phrase to encrypt the files with. Fourth, I copied some files into "/phil/nfs-phil-private". I saw that files with cryptic names were created in "/home/nfs/phil/private", along with a file named ".encfs6.xml".

That was on one machine named "lorentz". Then I switched to another machine named "euler". I created the same mount point here (/home/phil/nfs-phil-private). I verified that /home/nfs/phil/private already existed, as did "/home/nfs/phil/private.encfs6.xml". So I tried the same "encfs /home/nfs/phil/private /phil/nfs-phil-private" command. This time it failed. Here is all the output up to the first prompt:

Code:

15:05:23 (FileUtils.cpp:375) Archive exception: stream error
15:05:23 (FileUtils.cpp:326) Found config file /home/nfs/phil/private/.encfs6.xml, but failed to load
Creating new encrypted volume.

[code]....

The first two lines certainly appear to be some kind of error. I can cat the .encfs6.xml files just fine, so I do have permission to read it. It had not even prompted me for a password, yet. Anyone know what the deadl with this is? A possible cause is that the first encfs is version 1.6.1 (ubuntu 10.10 packaged as 1.6.1-1) and the second encfs is version 1.5.2 (ubuntu 9.10 packaged as 1.5.2-1).

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Ubuntu Security :: CryptKeeper And Encfs ?

Feb 24, 2010

I could not find details of what CryptKeeper was doing and I worked this out. It shows how to open and close CryptKeeper files using encfs form the command line. I hope this helps others.

Ubuntu karmic 9.10. CryptKeeper 0.9.4-1 encfs 0.5.2-1ubuntu1 also works in Mint8. Tom Morton author of CryptKeeper site: [url]

How Gnome Cryptkeeper works with encfs

In CryptKeeper create a new encrypted folder:

The directory above is created and also another hidden one called: /home/ian/.aaaaaaxxxxTestCryptKeeper_encfs which contains one hidden file called .encfs6.xml. As you create additional folder and files in the /home/ian/aaaaaaxxxxTestCryptKeeper additional folders and files with encrypted names are created in /home/ian/aaaaaaxxxxTestCryptKeeper 4L9KBI4IeoAKOoZ,IwzVyn2VPGysXt-JCbStUej5Ewnn90. These mirror any files and folders which you create in the encrypted directory except that there names and contents are totally encrypted.

The above CryptKeeper directory can be created anywhere within the Linux file system, for example, on another partition. In each case two directories are created within the parent (in this example /home/ian/), one with the original directory name, the other preceeded with a "." and followed by "_encfs".

How to open a directory created with CryptKeeper using encfs.

Provided you copy the directory like .aaaaaaxxxxTestCryptKeeper_encfs and all its contents, it can be opened anywhere using the following command. (Note that full path names are needed.)

encfs /home/ian/.aaaaaaxxxxTestCryptKeeper_encfs /home/ian/aaaaaaxxxxTestCryptKeeper

The mount command will then show:

If /home/ian/.aaaaaaxxxxTestCryptKeeper_encfs does not exist you will asked if you wish to create it and you will be asked for a password twice. In this case it will not be in CryptKeeper unless you then import it.)

If it is a CryptKeeper file then it appears in CryptKeeper file list as opened and can be closed from there. To close from the command line type:

Note unmount will not work for these files.

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Ubuntu Security :: How To Disable Encfs

Jun 19, 2011

Set up a few machines yesterday to test out some parallel code. Just for fun, I selected the "encrypt users files" option when setting up Ubuntu (10.10). I had never used the option in years past. Now I'm finding it a pain. EG., ssh requires me to already have a login to the machine before it will let me log in w/o a password (eg., using id_rsa.pub and authorized_keys).

Similarly, I have no reason to encrypt files on these machines. They're just crunching numbers. Is there an easy way to disable this? Or do I need to delete my original user and make another one (with all the su privelages, etc...) w/o an encrypted file system / home directory.

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Ubuntu Security :: Encfs: Preserve Timestamps On A Shared Encrypted Folder?

Mar 2, 2010

[URL]

encfs: preserve timestamps on a shared encrypted folder?

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Ubuntu Security :: Encfs: Preserve Ownership On A Shared Encrypted Folder?

Mar 3, 2010

I would like to create an encrypted folder which can be shared by users included in the users group.To do so I used encfs:

Code:

cd somewhere
sudo mkdir encrypted visible
sudo chown root:users encrypted visible
sudo chmod 770 encrypted visible
encfs /somewhere/encrypted /somewhere/visible -o allow_other -o umask='007' -o uid='0'

Now if a user (included in users) creates a new document in the visible folder, that will be

Quote:

-rwxrwx--- 1 root users 0 2010-03-02 14:19 new file

While I would like it to be

Quote:

-rwxrwx--- 1 user users 0 2010-03-02 14:19 new file

Mounting encfs without the option uid='0' gives same results with only difference that instead of root the owner is the user who mounted encfs. Also copying a file owned by different user rather than root goes to the same: for example having in my home a file like

Quote:

-rwxr-x--- 1 me users 0 2010-03-02 14:30 myfile

and trying to copy it to the encrypted shared folder with

Code:

sudo cp -a -v ~/myfile /somewhere/visible

will give something like

Quote:

cp: failed to preserve ownership for `~/myfile': Operation not permitted

And the copied file on the shared encrypted folder will be as usual:

Quote:

-rwxrwx--- 1 root users 0 2010-03-02 14:30 myfile

Is there a way to mount encfs in order to preserve ownership?

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Ubuntu Security :: Terminal Command To Tell Encfs To Not Decrypt Home Folder When I Log In?

Mar 21, 2010

Is there a way for my home folder to not be automatically mounted when i log in? And for that matter a way to change the password from my log in password to something else?

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Security :: Any Good Comparison Software To Scan Files?

Apr 23, 2011

I had a hack on my oscommerce website recently. I have put in the relevant security patches but I need to check whether the hacker left any code changes in my files. What is a good file comparison software for linux? I need it to scan though the current files and folders and compare it the original default oscommerce installation so I can check the code.

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Fedora Security :: Job Failed. See System Logs And 'systemctl Status' For Details [FAILED}?

Jun 8, 2011

went through the tutorial on FedoraSolved for securing ssh. I installed denyhosts with yum and then tried to run it with the command line command"sudo /etc/init.d/denyhosts start" but I got the message"Job Failed. See system logs and 'systemctl status' for details [FAILED]"and in the application "services" in the applications menu,t shows an exclamation warning and says that "This unit has failed"

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Ubuntu :: Rsnapshot Over SSHFS And ENCFS

Apr 29, 2010

Right, just a quick question about rsnapshot over sshfs and encfs. I've set up an encfs filesystem, and when mounted on the remote machine remotely:

Code:
touch foo.bar
Code:
cp -al foo.bar foo.car
Works as one would expect it to.

The same is true on the local machine (The EncFS has External IV chaining disabled). However, when the remote dir is sshfs mounted on my computer here, and then encfs'd to a decrypt mount on my computer, I can move files to it, and they go over the network and get encrypted, however:

Code:
cp -al <file> <file>
No longer works, I get 'not implemented' errors...

I thought since I don't have External IV chaining this shouldn't be an issue - I've tried without any of the file chaining options, again to no effect. All work remotely, or with both locally, but not over sshfs. Is this a quirk of sshfs?

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Software :: Encfs Not Working All The Way?

Apr 13, 2011

I am trying to get Encfs working on Ubuntu 10.10 with only partial success. I am using the Ubuntu package which is version 1.6.1. I am also trying to build 1.7.4 source on Ubuntu 10.10 which is failing.

First the problem with the Ubuntu package, which I realize may be fixed in 1.7.4. I am mounting a clear directory with the --reverse option to have an encrypted view of this data. This so far works, although I do not know if it really works correctly. I used rsync to copy all the encrypted data to a third directory outside of this first mounting. Then I do a second mounting (without --reverse) using that copy as the source, to make a mountpoint with a clear view of the copied encrypted files. This fails as no files show up at all.

I am doing it this way because my intended first use for Encfs is to copy an encrypted view of a local physically secured backup directory containing clear data to another remote machine where sometimes it is not physically secure. Transfer is by ssh over rsync, but that is not sufficient security for the remote machine. So the role of Encfs is to be sure the data is never in a clear state on that machine when the machine is not attended. This location is the home of the owner of the company who is not always at home. The machine is, in theory, at risk for theft when no one is at home (this is the risk we want to address). The owner will personally have the Encfs password, and may need access to some of these files. So it would be treated as an encrypted store and Encfs would be used to view it in the clear by manually mounting it that way (e.g. not with --reverse).

I am doing the test entirely on my desktop at the moment, as described above. I am using a script to carry out the entire setup of my tests, so it is fully reproducible, and that configuration can be incrementally changed as desired. I have a suspicion that certain messages resulting from the setup may indicate the problem. This is from the first mount with --reverse:

Code:
Creating new encrypted volume.
Standard configuration selected.
--reverse specified, not using unique/chained IV
Configuration finished. The filesystem to be created has
the following properties:

[Code]...

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Ubuntu :: EncFS Mount - Regular Directory Disappears

Jun 15, 2011

Whenever I mount a encfs directory to a regular directory, the regular directory disappears. this is the command I use
encfs ~/encrypted ~/plain
When I try to access the folder from my windows computer, I can not see it. What to do?

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Networking :: Mount Encfs On From A Nfs Source?

Feb 17, 2011

I have two computers on my network, both are running Ubuntu 10.10. I wish to access encfs-encrypted directories on a remote computer from my local computer. I used nfs to mount the remote encrypted directory onto my local machine, and then I used encfs to decrypt. But because of nfs' use of some UID-type ownership convention rather than user:group, I have no access to the directory I just mounted.I want my local machine's software to access the files, so ssh login is probably not a solution, and I would like to avoid using encfs' --public option if possible.

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Slackware :: Running EncFS On Old Install Of 13.0

May 9, 2010

Just a warning / question about Encfs on Slackware current. I doesn't work due to the upgrade to boost 1.4.2. I ran encfs on an old install of 13.0 to get at my data, but I'd prefer to access it right from current. A big warning: if you try to access your encrypted data on current it will corrupt your encfs6.xml file and I don't know if it is recoverable (I had a backup of mine).

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Ubuntu Servers :: Sharing An Encfs Non Public Folder With Samba?

Jun 7, 2011

I've been trying to share a folder with samba. This folder is the decrypted version of an encfs encrypted folder. Mounting the decrypted folder on the server is done automatically on login using gnome-encfs. Exposing the folder locally works like a charm. Now where I get stuck is trying to access the samba share from a client (even with smbclient on the server itself). I can see the share with smbclient -L:

tijm64@tijm64-HTPC:~$ smbclient -L 192.168.1.100
Enter tijm64's password:
Domain=[TIJM64] OS=[Unix] Server=[Samba 3.4.7]

[Code].....

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General :: Is It Safe To Mount Encfs Via Nfs On Several Machines Simultaneously

Mar 25, 2010

There are some encfs folders with private data on the server and all data is exported via nfs to all other omputers in the house.I can mount the encfs folders on another computer (using encfs command) to work with the data, but I never dared to mount it on more than one computer simultaniously, because I fear the encrypted data might get corrupted if more than one computer mount and access it at the same time.

So I want to ask about your experience: Is it safe to mount an encfs folder on several computers at the same time? All computers use "hard" and "sync" as nfs mount options to minimize risks of data loss. But can I access the folders simultaniously, or do I risk corrupting the encfs encryption and lose everything?

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Slackware :: Recent Openssl Patch Broke Encfs?

Mar 8, 2010

I started up my machine this morning and entered my password to encfs as I do each day and was greeted with a message telling me my password was incorrect. I tried several times, checked caps lock but no joy.

The message (which I didn't copy and paste unfortunately) mentioned ssl and I remembered that openssl was one of the security patches I applied at the weekend. So I removepkg'd the two openssl packages (v0.9.8m) and then installpkg'd the original ones that came with slackware 13.0 (v0.9.8k).

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Mar 10, 2010

Is there a reason that wifi on Vista seems faster/more reliable than on Windows? Does this vary be distro? Or wifi card? I have an Atheros b/g/n card and it seems like if I stay in the same location Vista outperforms Ubuntu 9.10 in this area.

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Software :: Directory Comparison Application For Ubuntu 10.04?

Apr 4, 2011

I am just looking for an application that given two directories, for example /home and an USB disk of 500 GB, can comparate the files and subdirectories present in each directory, so I can know the files that are present in one directory but aren�t in the other.I do not know if the explanation is clear. but I just need some tool that can indicate me what files to copy from one place to another when periodically I do backups of my data...

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Hardware :: DDR2 800/667 RAM On A 667 FSB - Comparison

Feb 9, 2010

I'm looking at a new board that supports both DDR2 800 and DDR2 667. But, the FSB is only 667MHz. My question is: is there a benefit of using the DDR2 800 on the 667 FSB? That is, can the DDR2 800 be fully utilized on this system? What are pros and cons of such? Does the added benefit outweigh the additional cost of the RAM?

Note: I'm not looking to overclock at all, and this is not going to be used for 3D apps (games or video editing).

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Security :: Failed SSH Tcp Forwarding

May 15, 2011

I want to create a tunnel from my home computer to a linux server by SSH, then i can use the tunnel as a tcp forwarding proxy(SOCK 5) to access the web via the linux server. But i got "Internet Explorer cannot display the webpage" on my home computer, and when i check the "/var/log/secure" in the linux server(fedora), I found: "sshd[17926]: error: connect to xx.xx.xx.xx port 80 failed: Permission denied"

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Software :: Awk From End Of String - 3 Position Comparison

Oct 3, 2010

I would like to check if the 3rd character from the end of a string is a d or p using awk and the field seperator would not help for this problem, i.e.

Code:

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Programming :: Comparison Between Pointer And Integer

Jul 6, 2010

I'm trying to write a simple program that lists a menu and then asks you for your decision, and you can answer with a number or the name. However, I don't know how to add the second options (name).

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Programming :: Getting A Comparison Operator To Work?

Feb 8, 2010

I'm very new at Bash scripting and have a bone head issue that I'm trying (and failing) to resolve. I cannot get this one IF statement to work, it seems the comparison operator does not think the resulting number from the $b*$c+$b operation is an integer even though it is a number. Below is a small proof of concept script with the bit I'm having trouble with.

Code:
#! /bin/bash
a=800
b=700
c=.15
if [ "$a" -le "$(echo "($b*$c+$b)"|bc)" ]

[Code]...

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Feb 3, 2010

I just installed FC12 and was trying to do the security update, but it encountered an "internal error" and asked me to "report this bug to the distribution's bugtracker" with the details. However, I am not sure exactly what to do. Could someone be kind enough to let me know?

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Debian :: Apt Security Update Failed

Apr 24, 2011

I don't know why but my server is no longer successfully updating its security repositories when I run 'apt-get update' on my system.Some index files failed to download, they have been ignored, or old ones used instead.Did I mess something up? No changes have been made to the server and I ran 'apt-get clean' and that didn't really do much.

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Nov 30, 2010

How do I monitor who is ssh'ing into a box (SLES) as well as failed attempts? How can I log their IP addresses, even if they're not in DNS?/var/log/messages I see their hostname but no IP address

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Programming :: Operator For Floating Point Comparison?

May 10, 2011

I know it is wrong to use the "==" operator to compare the equality of two floating point numbers. Logically it would seem that if the "==" operator is not usable for floating point comparison, then the "<=" operator would also not be usable. Is this true? The lack of google search results on this topic made me think that it must be true. If that is true, then is it true that the only way to compare floats with <= or >= is with something like the code below? Code: bool smaller_than_or_equal(float a, float b) {

if ( fabs(a-b) < EPSILON){return true;}
else if (a < b) {return true;}
else {return false;}

} I think this is a general question, but if specifics are necessary, I am using the C++ language to code at the moment.

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Hardware :: CPU Speed Comparison - Laptop Going Slower

May 27, 2011

I don't really understand the CPU technology where there are different CPU speeds. I feel it is hard to compare them nowadays. For example, I have been using my laptop with Pentium (R) 2Ghz. Now, I am thinking about buying a new laptop with Intel I5 1.33GHz (Tablet/laptop). Is my new laptop going to be slower than my current one?

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