Security :: Is It Worth Encrypting Hard Drive?

Oct 21, 2010

I encrypted my hard drive on my media PC but it's really annoying having to type in a password every time I turn it on. I chose a short password so it was quick and easy to type in but is it worth encrypting data with a weak password?If the computer is suspended, someone could come along and resume the computer. They would be presented with a locked GNOME session) but the data would be unencrypted; does this go against encrypting the hard drive? Or does the locked GNOME session provide enough security to keep an intruder out?

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Fedora Security :: Encrypting A Hard Drive In 12 ?

Dec 12, 2009

I'm installing fedora 12 on a laptop using the live cd, and I have a few questions about the encryption process.

First, I'd like to fill the drive with random data. I've read the fedora documentation and it suggests using the following command: dd if=/dev/urandom of=<device>. The installer didn't offer an opportunity to do this, so I opened a terminal and typed the command. I expected it to take hours on my 160 gig hard drive, but it only took about 3 minutes, and indicated about 600 megs of data had been written. Did I do it correctly? According to palimpsest, my boot partition is sda1 and the other partition is sda2, so that's the one ran the command with.

Second, I need some advice on what to encrypt. The installer shows me the following layout after I select encryption:

LVM Volume Groups

Hard Drives

I know I can't encrypt boot, but I can encrypt lv_root and lv_swap. But is it necessary to do that? And tell me the pros and cons of using a boot loader password?

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Ubuntu Installation :: Is Keeping NTFS Hard Drive Still Worth It?

May 14, 2011

It's been about three days since I've made Ubuntu my OS and I'm quite surprised to see, when I tried it first via wubi, that it actually reads NTFS partitions.It made backing up easy for me though now is it still alright that I still keep them NTFS or should I now start converting them to ext4? Except for my external hard drive.and what's the difference with ext3 and ext4? I was shown these options when I tried formatting my hard drive.

My other hard drive has two partitions which was done when I installed windows a few years back..If I would to reformat should I combine these partitions into one and make new partitions via that?

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Ubuntu Security :: External Hard Drive Security?

Aug 14, 2010

i have just recently purchased a SeaGate 1TB External Hardrive. i have very sensitive information on this storage unit that i only want certain people to have access to. is there any way of password protecting the hardrive? preferably using linux or what are my options?

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Ubuntu Security :: Encrypting My Server ?

Oct 29, 2010

I have an Ubuntu 10.04.1 LTS server that I set up a while back and I am considering encrypting the whole box. I store everything on the server and if it were stolen from a home robbery it could be quite devastating. The server is using two 750 GB SATA hard drives formatted with LVM. Inside the LVM I have a small partition on the first drive for the OS, SWAP, and everything else on the first and second drive is /var/media which is where I store all the data. I have set up an encrypted LVM on my laptop but that was during the install using the automatic method.

I can't figure out how to do what I want to do and I don't want to risk destroying the data on the server. What I would like is to non-destructively encrypt the server (System, SWAP, and DATA partitions) similar to how TrueCrypt works on Windows and I'd like the encryption key to be stored on a USB thumb drive so when the server boots it requires a hardware key. (And have the encryption key backed up online in case the flash drive dies.) And I'd like to use AES 256.

Code:

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Security :: Encrypting All Traffic By Squid

Jun 24, 2010

We use a squid proxy server for all http traffic. Is there any way to configure squid so that all traffic which squid and workstation communicates is SSL and encrypted ?

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Fedora Security :: Encrypting Emails In The Thunderbird?

Jun 17, 2009

i have recently installed thunderbird on my fedora 11 box and so far so good. i am interested in encrypting my emails and digitally signing them as well. does anyone have documentation as to how i can do this? i messed around with it last night but i was not able to import a valid certificate.

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Ubuntu Security :: Encrypting A NAS Via A Samba Share?

Jun 10, 2010

why the following doesn't work with ext3 or 4?

dd if=/dev/urandom of=/tmp/container.bin bs=1024 count=20000
sudo losetup /dev/loop2 /tmp/container.bin
sudo cryptsetup -c aes -s 256 --verify-passphrase luksFormat /dev/loop2[code].........

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Ubuntu Security :: Easiest Program To Use For Encrypting External HD

Mar 6, 2010

I currently have my home folder encrypted with 128 bit encfs but i have the back up of that 'in the clear' on my back up hard drive. I am not that great with complicated instructions and especially the terminal so what if any is the easiest program to encrypt with?

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Ubuntu Security :: Encrypting Content With A Password Only - No Keys

Jun 1, 2010

What is the easiest way to encrypt plain text content with a password only? I need to encrypt client login information, but I hate dealing with all the unnecessary complexities of Linux's encryption systems.

I know I am going to get a bunch of people telling me how perfect Seahorse and whatever is, but Seahorse and the default /home directly encryption have both given me too many problems when decrypting my information. I prefer to preserve my data rather than using these methods.

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Ubuntu Security :: Encrypting / Home Partition Without Reinstalling?

Jun 12, 2011

I have Kubuntu 11.04 64-bit installed (software upgrade from 10.10) and I have a separate /home partition. I want to encrypt my /home partition (and perhaps the swap partition as well) but I don't want to have to reinstall Kubuntu. (Mostly because it was a software upgrade and I don't have an 11.04 disc.) I found a tutorial for Encryptfs via one of the stickies that mentions post-install migration, but it says that using Encryptfs on a separate /home partition is more complicated than if it were part of the root partition and that the CDs don't have any software to preserve and configure existing encrypted /home partitions. (Granted this tutorial is made for 9.04, so things may have changed.)

Also, this tutorial makes it sound like if you have your /home directory encrypted that the encrypted data is stored in a folder on the root partition. Is it done the same way if the /home directory is on its own partition? Because I don't think my root partition is large enough to have all of my /home data. (I purposely kept it small because the root partition doesn't seem to get very large.)

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Fedora Security :: Encrypting The Swap Partition While /dev/path Constantly Changes?

Aug 10, 2011

I would like to encrypt my swap partition ...During installation, I tried to select the "encrypt partition" choice, but it needed a passphrase.After installation, I tried to encrypt my partition ... I followed this article: The problem is that my swap partition always changes its path ...When I first booted the system, it was /dev/sda10, next it became /dev/sdc10, now it is /dev/sdb10. This is probably the reason why in fstab all entries are according to UUID.However, the swap partition is not fond of UUIDs ! I tried to mkswap /dev/<current swap partition> -L Swap, I received a UUID, puted it in /etc/crypttab ... it worked for the first time ... but the second time... did not.

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Fedora Security :: Encrytped Hard Drive With Smartcard

Jun 6, 2009

I've got a few laptop for which I'd like to encrypt hard drive with the help of a smartcard.Does one techno (LUKS, true-crypt,) support smart card for getting the secret/passphrase ?

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Ubuntu Security :: Using TrueCrypt To Encrypt Whole Hard Drive?

Nov 5, 2010

So what I want to do is encrypt my entire hard drive, but heres the thing.

I dual boot Ubuntu and windows 7, but I am afraid that if I use truecrypt to do the encrypting that it will wipe GRUB and not allow me to boot into any OS, is that a possibility and is there a way around it?

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Ubuntu Security :: Retrieve The Data From Hard Drive?

Mar 24, 2011

I have a friend that has a computer running UBUNTU he has not used in a while and has forgotten the user name and password for it. Is there away to retrieve the data from this hard drive?

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Ubuntu Security :: Permission Denied On External Hard Drive

Jan 6, 2010

I have recently bought a new laptop, installed my first linux OS on it (Ubuntu 9.10) and an external hard drive with 500GB on it for backup. For the first few days my external hard drive was working fine, but then eventually it wouldn't let me copy/move/delete stuff to and from it. So I kept trying to change the permissions but it wouldn't let me.

I figured this would be a very very common problem, so I looked up some forums to try out the methods but they didn't work. So I thought I would ask you guys for help because I am pleased with the support. I wouldn't think this would be a hard problem to solve.

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Ubuntu Security :: Access Remote Hard Drive From Another Computer

Jan 12, 2010

What I want to do is pull data from any of the hard drives attached to my Linux box from my Windows machine. I have been moving small amounts of data from the drives to my OS drive and those parts share easily, but I want to move away from that method to move large amounts of data at the same time.I have tried using Samba as it is used for file sharing between systems and that I have to give my Windows box permission through Samba.

Trick is, I'm not sure where to start, though I have an idea and wanted to know if this is the right track before I start editing my file system.

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Ubuntu Security :: External Hard Drive Permission Denied?

Oct 26, 2010

I have an external hard drive that has all of my Apple Powerbook G4 files on it. I plugged in my "Journal Extended" external hard drive into my new HP laptop with Ubuntu 10.10 on it.

All of my files are on the hard drive still, however lots of them have a little X on the folders and when I try to open them it tells me I don't have permission? How can I force the permission for everything on my external? It's my own files and I can't even access them lol.

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Ubuntu Security :: Access Encrypted Hard Drive Via Live Usb?

May 17, 2011

I want to access my hard drive to copy over my old documents. So I boot into a LiveUSB, mount my ubuntu partition, and then cd to my home directory, but I can't open it. I get "permission denied." I encrypted my whole home directory and know the password, but how do I "decrypt" it or login as the partition's root so I can access the documents that way. I'm booted into the USB, but can't access the home directory. I get "You do not have the permissions necessary to view the contents of 'jake'".

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Security :: View Random Data And Zeroes On A Hard Drive?

Mar 9, 2011

I want to view a hard drive and see if it has all zeroes, how would I do this? I want to view a hard drive and see if it has all random data, or random data mixed with zeroes. How can I do this? I prefer to do all this in linux if possible without a gui...so looking for any cli tools to view with.

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Ubuntu Security :: Encrypting Swap Space Breaks Standby/lock Screen?

Jan 7, 2010

As part of making a encrypted private folder i told encfs to encrypt swap space on my pc knowing that this would probably break sleep and hibernation. That said i just turned on ubuntu for 5 mins, had to go away for a bit, when i came back to unlock the screen my password was not being accepted, and another 5 mins later the screen said that my session had timed out-i had to do a cold reboot Does this mean i cant lock the screen anymore?

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Ubuntu Security :: Back Up All Systems To An External Hard-drive Using Rsync

May 20, 2011

I have an OpenBSD and a FreeBSD system and a mac. I also have a Ubuntu server. What i would like to do is back up all these systems to an external hard-drive using rsync when the external usb disk is connected to my Ubuntu box.If i format the external usb disk with cfdisk and the create a non-bootable ext3 file system on this external disk and create and put all the necessary public keys on the Linux box then from the BSD's or the mac issue the command:

Code: #rsync --progress -avhe ssh --delete / user@ubuntuBox:/usb/disk/path/dir/ Will this back up the entire systems so that they can be restored in the event of an emergency? I should store each OS just in a separate disk file of the external usb drive each time right?? Because i would rather not have to format the external usb drive for each different OS. Would this work? and would the restoration command for these BSD's be:

Code:
rsync -avze ssh UbuntuBox:/usb/disk/path / I just need to know the basics. I'm sure given that i'll be able to automate the process. I don't want to clone the disks for forensics. I just want to have a way of restoring to a clean OS. This is the most basic question:All the howto's never mention whether or not you have to have an rsync server running on the machine your backing up to. So do you just push or pull from one end of the connection only or do you have to have a client at one end and a server at the other, as is traditional?

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Fedora Security :: How To Check Memory Stick And External Hard Drive From Virus?

Sep 30, 2010

now I'm done full transition from windows 100%.i want ask how can i check my memory stick and External Hard Drive from virus ?

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Ubuntu Security :: Ecrypted External Hard Drive Partition Won't Mount Or Unmount?

Nov 15, 2010

I've been running Linux for a year on our family computers (one desktop, one laptop and two netbooks). I've run into a problem with the encrypted ext4 partition (270GB) on a LaCie external hard drive which also has a NTFS partition (50GB) which is not encrypted . First two times I tried using the encrypted ext4 partition (from two different computers) it worked fine but now I can't access it at all. I can still access the NTFS partition.Encrypted external hard drive partition will unlock but won't mount (or unmount). The computer says "Opening 320GB Hard Disk" but after a minute says, "Unable to mount location. DBus error org.freedesktop.DBus.Error.NoReply"Disk utility (GUI for gparted I believe) states that the encrypted partition (/dev/sdb1) is unlocked and the underlying partition (/dev/dm-0) is not mounted but it has a "busy circle sign" on it that will not turn off. The NTFS partition on the same drive mounts and accesses normally.

But if I try to unmount the NTFS partition, it says: "Unable to stop drive. One or more partitions are busy on /dev/sdb"If I try to shut down the computer, it is unable to shut down because (I assume) it can't shut down that drive either. So I have to just turn off the computer.fdisk states that /dev/dm-0 doesn't have a valid partition table [full output attached]fsck suggests: "Filesystem mounted or opened exclusively by another program?"ps axuf shows some processes running on /dev/dm-0 but killinghem doesn't release the drive either. [full output attached]I checked /etc/blkid.tab (suggested in one vaguely related thread) and there's no actual file only a broken link pointing to /dev/.blkid.tab (which doesn't exist). I tried deleting this link and rebooting but that didn't change anything.when I finally gave up my data as lost, I tried to format the partition (using Disk Utility) and it refused saying, "One or more block devices are holding /dev/sdb"

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Ubuntu Security :: Grub With Luks Support - Encrypting The Boot Partition To Prevent The Kernel From Being Modified?

Mar 9, 2011

Has anyone tried encrypting the boot partition to prevent the kernel from being modified. Iv tried following this but I'm running into issues when building. [URL] Im using the source from bzr checkout [URL] Last time I tried I screwed grub and it wouldnt boot.

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Ubuntu Security :: Black Hats - 105GB FAT16 Hidden Partition On Hard Drive

Mar 31, 2010

Since August of 2009 I have been under attack by corporate Black Hats. I found a 105GB FAT16 Hidden partition on my hard drive. Seventy four percent full (78GB). What led me to this was the fact that I couldn't help but notice that my Internet connection was a revolving door that never stopped spinning. So I went looking for why.

I removed the hidden flag, and patched the partition, but couldn't open that thing no matter what I did. I tried for a month. The attacks started as soon as I stopped these guys from accessing that data. At this point we are 9 months into 24/7 attacks. I have interviewed with the FBI, and local law enforcement, but they are intent on making me out to be a conspiracy nut. I am not at all. All they wanted to do is quiz me on my computer skills. If I managed to draw the attention of a corporate security group they killed it.

I am a US Navy trained Electronics Technician. 58 years old with ECM experience. I have been doing both bench, and field service on all manner of electronics for 40 years. My last job was supporting field engineers, and technicians for Samsung Electronics of America. The attacks have spread to my mother, and best friend. My phones are bugged internally at the phone company, and my modem has had its firmware altered to call them. They run around inside my ISP like they own the place.

[Code]....

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Ubuntu Security :: Fill In Random Or Zeros In Deleted Files Without The Hard Drive Filling Up?

Oct 17, 2010

I was using dd if=/dev/zero of=/dev/user name/wipe.conf however i got a message that my hard drive is full.

lots of this is scary - dangerous. what is the best way to fill in random or zeros in deleted files without the hard drive filling up ?

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General :: Upgrade Internal 2.5" Hard Drive Vs External Usb Hard Drive For An Old Laptop?

Jan 25, 2010

I got a dell inspiron 1501 laptop with a 80Gb sata drive what is the best solution to add data storage space for someone that love to have multiples operating systems at hand Note: I use mostly linux so I won't need to change my laptop for many years maybe ...

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General :: Move Smaller Hard Drive To Partition On A Larger Hard Drive?

Mar 16, 2010

My parents bought a new hard drive for a laptop that I've owned for several years. It's much larger than the current one, so I plan on splitting it up to dual boot it with Ubuntu.I have no problem with partitioning a drive (I always keep a LiveCD handy), but my question is this: how can I go about moving the existing partition to the new drive? This is a laptop, so I can't simply plug the new drive into another slot.

Also, even if I manage to move it, will Windows still work on the new drive in a larger partition? I've had this laptop for quite a while, and I've lost the recovery discs that came with it a long time ago. I also have a lot of software without CDs to reinstall them with. This makes not reinstalling Windows a high priority.

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Fedora Installation :: EIDE Hard Drive Recognized As Sda Hard Drive

May 1, 2010

Trying to install Fedora 12 using the 6 CDs. Trying to install on an older x86 box.Problem is that when detecting my hard drive, Fedora 12 recognizes it as a sda hard drive instead of hda hard drive. I have no SCSI connected to my computer what so ever. It's an old fashion PATA Western Digital hard drive.If I proceed with the install, Fedora 12 only installs 200MB of the OS from the first CD only. No options for additional software or anything.

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