OSEC

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From: Erick B. (erickbeyahoo.com)
Date: Mon Jul 02 2001 - 16:44:10 CDT

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    Comments inline...

    --- Andrew Daviel <andrewandrew.triumf.ca> wrote:
    >
    > Recently a laptop brought onsite here from another
    > site triggered
    > an IDS alert.
    >
    > It seems the laptop was placed in hibernate mode at
    > the other site then awakened on our network. It
    > proceeded to use in-RAM
    > network settings and sent a flurry of DNS requests
    > to offsite servers.
    > I believe it was running DHCP and don't fully
    > understand how it was
    > able to find the new gateway without changing the
    > DNS settings too.
    >
    > Clearly laptops using static settings are going to
    > use old values if
    > the owner forgets, but I thought DHCP fixed that.

    The laptop could learn its IP and gateway, etc via
    DHCP but have DNS entries staticly configured. Maybe
    this is what happened.

    > I have a feeling that there might be more subtle
    > security issues
    > relating to hibernating a system in a trusted
    > environment and awakening it
    > in an untrusted one, apart from user education
    > issues, but can't put my
    > finger on any just now.
    >
    > --
    > Andrew Daviel, TRIUMF, Canada
    > Tel. +1 (604) 222-7376
    > securitytriumf.ca

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