On Sun, Jan 18, 2004 at 04:35:37PM -0500, Brett Carrington wrote: > On Sun, Jan 18, 2004 at 01:26:29PM -0800, Paul Johnson wrote: > > On Sun, Jan 18, 2004 at 01:07:04PM -0800, Nano Nano wrote: > > > I don't know how it's done, but it's totally true: everything on your > > > cable modem can be intercepted easily by people on your same subnet. > > > > Not these days. Cable companies got a bit more security conscious > > about 5 years ago. > But how? The lines are -still- shared, they didn't change the entire > infastructure. Is each user's cable connection now encrypted end-to-end? > I imagine any amount of secure encryption would really hurt people > trying to play bandwidth-heavy games. (Not in actual bandwidth but computational > time on what I assume are minimally powered cable modems.)
The specification is called Docsis (data over cable specification something something) 2.0. I know each cable modem has a digital certificate in it used for authentication - Cisco's cable modems use a variant of the thing they use for requesting certs for routers. I wrote a policy module for Windows Certificate Services for Cisco to handle it. I know they have the *capacity* to basically do IPsec or encrypt everything, but they're not currently. Won't that be exciting when they do! -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
