Re: un-hibernating laptop using old network settings

From: Erick B. (erickbeat_private)
Date: Mon Jul 02 2001 - 14:44:10 PDT

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    Comments inline...
    
    --- Andrew Daviel <andrewat_private> 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
    > securityat_private
    
    
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