Vulnerability Development mailing list archives

Re: un-hibernating laptop using old network settings


From: Curt Wilson <netw3 () netw3 com>
Date: Wed, 04 Jul 2001 13:09:05 -0500


This might be off base, but perhaps the system used 
ICMP router discovery protocol (IRDP) to find your gateway?
We've got several systems in our network that receive
a dynamic IP address when making a secure connection to
a financial providers data network. These systems don't have
a gateway specified on their ethernet interface and snort
picks up frequent IRDP router discovery messages from this
box as well as systems on the local segment that don't have
a default gateway set (since they don't need to see anything
but the local segment anyway).

Just an idea.

CW



At 10:09 PM 7/1/2001 -0700, Andrew Daviel wrote:

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.



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