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Thread: All access to files in Windows/via liveCD

  1. #1
    Join Date
    May 2009
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    9

    All access to files in Windows/via liveCD

    Dear all,

    when using a liveCD or mounting my /home partition (ext3) in Windows using a ext3-driver, i can freely look in all user's files and freely add and delete files.

    What's the use of having user accounts and private /home/user folders if one can access these folders by inserting a LiveCd or mounting the partition in another OS?

    How do you prevent this?

    Kind regards,
    u.

  2. #2
    Join Date
    May 2006
    Location
    Strasbourg, Fr
    Beans
    2,384
    Distro
    Ubuntu Development Release

    Re: All access to files in Windows/via liveCD

    As far as I know Windows doesn't support UNIX file/folder permissions through the ext3-driver.
    The only way to absolutely prevent this kind of "hard" privacy breach is to use an encrypted /home directory.

  3. #3
    Join Date
    May 2009
    Beans
    9

    Re: All access to files in Windows/via liveCD

    So anyone that finds a laptop can see any document on it, unless a folder is encrypted?

    How would a system admin overcome this problem on a public desktop computer? Disabeling cd/network/usb as boot devices in bios and set a password for changes in there is the only solution i can come up with. Will this do the job?

    Using this method for encrypting the /home folder (https://wiki.ubuntu.com/EncryptedHomeFolder), what's the effect on performance?

  4. #4
    Join Date
    May 2006
    Location
    Strasbourg, Fr
    Beans
    2,384
    Distro
    Ubuntu Development Release

    Re: All access to files in Windows/via liveCD

    Yes, if you don't want anyone to access your files through physical access to the computer (in the event you lose you laptop for ex.) then encrypting your personal data is the best way (with bios password and so on, as you mentioned) is the best option.
    I use an encrypted directory for my eeePC 901, and I see almost no difference in terms of performance. The only "lag" produced is in GDM, I have an extra second to wait before Gnome launches. Other than this, it's working like a charm...

  5. #5
    Join Date
    May 2009
    Beans
    9

    Re: All access to files in Windows/via liveCD

    Thanks for the info, i'll give it a go

  6. #6
    Join Date
    Oct 2006
    Location
    SLC, UofU
    Beans
    684
    Distro
    Kubuntu Jaunty Jackalope (testing)

    Re: All access to files in Windows/via liveCD

    Rule of thumb... Physical access to a device is equivalent to complete access to all information on the device.
    --Superb--

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