DSL is basically using the same technology as a T-1. You can have a T-1 on
fiber, but most Telcos will provide you a T-1 on some Pairgain units,
which are really HDSL (two 768K DSL pairs).
Your DSL goes straight to the Telco Central Office, and then is
multiplexed either on frame relay or ATM and backhauled to the ISP. Some
DSL providers use PPPoE (PPP over Ethernet) to permit multiple ISPs to
resell DSL, it authenticates users from the ISP server, then creates a
tunnel between the ISP and the customer. Some other DSL providers do not
use PPPoE, in that case the ISP is plugged directly into the DSL access
unit.
So it's not like cable at all. If you want to sniff the packets, you must
be at the Telco or ISP.
Jean-Michel Dault
[EMAIL PROTECTED]
[EMAIL PROTECTED]
On Fri, 18 Feb 2000, Fred Frigerio wrote:
> Date: Fri, 18 Feb 2000 15:22:37 -0500
> From: Fred Frigerio <[EMAIL PROTECTED]>
> Reply-To: [EMAIL PROTECTED]
> To: "'[EMAIL PROTECTED]'" <[EMAIL PROTECTED]>
> Subject: RE: [expert] Security with cable
>
> Yeah but what I was wondering is if it is more like a T1 or frame-relay
> in the sense that you will not be in the same broadcast space as the
> rest of the people in the same DSL area. That is what I'd like to know.
> The reason is that that way they will find my machine by scanning but
> people on the same group but my machine will not see traffic on the
> link.
>
> > -----Original Message-----
> > From: John Aldrich [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, February 17, 2000 9:29 PM
> > To: [EMAIL PROTECTED]
> > Subject: RE: [expert] Security with cable
> >
> >
> > On Thu, 17 Feb 2000, you wrote:
> > > What about DSL? I think it is similar to a PPP connection but havent
> > > seen one yet and am thinking about getting it. Does anybody
> > have good
> > > info about it? Running together with Linux?
> > >
> > DSL is more like a cablemodem -- it's a semi-permanent connection.
> > John
> >
>
