Just wanted to point out, that if a user is smart enough to hack the modem
to remove the bandwidth limits he is smart enough to reprogram the MAC address
(a feature that is not uncommon on pro modem/routers).
Regards,
tzahi.
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED]
> Sent: Sunday, September 25, 2005 9:22 PM
> To: Ilya Konstantinov; Nadav Har'El
> Cc: Linux-IL
> Subject: Re: Actcom without a dailer costs more
>
> On Sep 24, 4:18, Ilya Konstantinov wrote:
> } Subject: Re: Actcom without a dailer costs more
> > On ׳”', 2005-09-22 at 10:41 +0300, Nadav Har'El wrote:
> > > The strange thing is that for some reason, getting this
> sort of dialer-less
> > > setup required fighting with the cable company.
> >
> > Actually, for the reasons already specified, it's the ISPs who are
> > actually not interested in those deals: it complicates
> abuse tracking
> > and, more important, it makes applying the service package
> limitations
> > more difficult -- they either need to ask the cable company
> to notify
> > them of any subscription upgrade/downgrade requested by the
> user, or do
> > IP-based traffic shaping (rather than interface-based).
> >
> > With IP-based traffic shaping, what if you acquire all the
> 3 IPs (Max
> > CPE limit) you're allowed to? Will they let you full
> bandwidth for each
> > of the computers (assuming you inflated your cables subscription and
> > didn't notify them)?
>
> I didn't mention it in my original answer. But the use of dialer is
> needed by the ISPs not only for traffic tracking. Without a dialer,
> when we get an abuse report on an IP (say a spam, virus, hack or fraud
> report) we DON'T have a way to locate the user! If we block
> the IP, the
> user eventually gets a new IP and our blocking is useless. Moreover -
> some other user eventually gets the blocked IP and calls for
> support...
>
> Regarding speed limit, this is not a main issue with Cable
> connection
> due to a procedure between HOT and the ISPs of mutual
> updates. However,
> as someone mentioned, with a direct connection (without a dialer) in
> principle the user can bypass the speed limitation in the modem and
> the ISP cannot prevent and even cannot detect that. Limitation per IP
> cannot be done because without a dialer the user gets a
> random IP which
> the ISP doesn't know (and also the user can get up to 3 IPs).
>
> We are going to start a project to solve this problem. The idea is
> that users without a dialer will get authenticated according to their
> MAC address (we will have to get the DHCP records from HOT in
> real time).
> This will allow us to track the traffic and to shape the
> speed, without
> a need for L2TP or PPTP termination (this project is done on Linux, of
> course), and eventually connect all of our Cable users
> without a dialer.
>
> Amir
>
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