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Re: P2P Darknets to eclipse bandwidth management?

  • From: Chip Mefford
  • Date: Tue Sep 06 14:29:25 2005

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Florian Weimer wrote:
> * Stephen J. Wilcox:
> 
> 
>>packet inspection will just evolve, thats the nature of this
>>problem.. there are things you can find out from encrypted flows -
>>what the endpoints and ports are, who the CA is. then you can look
>>at the characteristics of the data.
> 
> 
> These protocols typically don't use a PKI.  You could look at public
> keys, but you don't even have to distribute them in-band.
> 
> What you can do is look at packet sizes and do timing analysis on
> incoming and outgoing packets to a particular hosts.  For example, it
> is possible to use such techniques to detect an interactive SSH
> connection to a particular host on your network which is used by an
> attacker to control an SSH client which connects to some other host.
> I don't know how this scales to tens of thousands of hosts, though.
> 
> Apart from that, I do not really understand the concept of "bandwidth
> management".  Isn't this this just an euphemism for "content
> management", to avoid the ugly "c" word?

In my complete ignorance, I would think that this is part of it
certainly, but would be mostly qos issues.

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