Shared folders and security

By lopdog
Dec 8, 2008
  1. Hi;

    I use my network card to connect directly to another computer for backup, and then I change the network cable and connect to internet with the same network card. Does this make my shared folders (with read/write permissions) more vulnerable to attacks?

    I use Win XP sp3
  2. k.jacko

    k.jacko TS Rookie Posts: 493

    i take it you don't have a router then or you'd be connecting both computers to that?
    How is your backup performed? If its just drag and drop copying then you don't need to open sharing on the folders you are copying if its performed on the 'master' pc.

    Ultimately its down to this.....Do you have a firewall running?
    That's the security you need to invoke in the first instance.
  3. SNGX1275

    SNGX1275 TS Forces Special Posts: 10,689   +395

    Probably a bit.

    But it doesn't really matter, you'd need to run a malacious file that appeared in your shared directory anyway before it can do any harm.
  4. jobeard

    jobeard TS Ambassador Posts: 9,156   +598

    When connected to the Internet, computer(#B) doesn't exist (from the internet point of view), so the copied data is totally immune.

    The original data on computer(#A) still retains the originals and are exposed unless you take addition steps to secure the system:
    1. disable P/F Sharing
    2. enable a firewall
    3. install a router
    4. restrict access to shares to a local LAN address
    (3) is cheap, effective and even recommended when there is only ONE computer
  5. lopdog

    lopdog TS Maniac Topic Starter Posts: 295

    I don't have a router (yet). The backup is performed using GoodSync, actually I use both computers, and use GoodSync to synchronize a few folders. I have a firewall running, but only the standard XP firewall.

    Now, if I disable file sharing, how can I access files from the other computer to perform the backup?
  6. jobeard

    jobeard TS Ambassador Posts: 9,156   +598

    you're already intervening by recabling. You leave P/F sharing active for backups
    and disable when connected to the Internet.

    The point of the router is to avoid both! :)
  7. lopdog

    lopdog TS Maniac Topic Starter Posts: 295

    Sounds reasonable. I guess that´s the safest thing to do, after all I won´t sync the folders every hour.

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