RE: Cable Vs. DSL

From: Cosentino, Guilherme V. <Guilherme.Cosentino(at)alcoa.com.br>
Date: Fri Apr 25 2003 - 16:00:02 EDT

I found a very good document about this issue on http://www.sans.org/rr/homeoffice/sniffing.php Must read it.

Rgrds

Guilherme

-----Original Message-----
From: Xueyan Liu [mailto:xueyall@yahoo.com] Sent: Friday, 25 de April de 2003 4:36 PM To: Cosentino, Guilherme V.; 'Chris Travers' Cc: security-basics@securityfocus.com
Subject: RE: Cable Vs. DSL

• "Cosentino, Guilherme V." <Guilherme.Cosentino@alcoa.com.br> wrote:
  > Here in Brazil,in most cases, traffic between
  > customers and ISP is
  > "tunneled" by PPPoE after cable modem boot and POST.
  > The communication
  > between cable modems is not allowed due to the
  > config file parameters
  > received just after the boot. Unfortunately, the
  > official documentation
  > of Managing Committee (a brazilian task force that
  > writes
  > recommendations to Internet use) are in Portuguese.
  > BTW, here's the
  > link:
  > http://www.cg.org.br/grupo/seg_cabo.htm
  >
  > My question is: Is it possible to snif encapsulated
  > traffic? I don't
  > think so, but maybe I'm wrong...
  >
  

I would think you can. Encapsulation just add another header in front as long as the data (payload) itself is not encrypted.

Xueyan  

> Guilherme

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Received on Mon Apr 28 12:17:27 2003