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On Tue, 2004-02-03 at 13:41, William H. Magill wrote:
> On 02 Feb, 2004, at 15:58, Chris wrote:
> Folks are confusing apples and oranges here.
>
i am not confusing anything... i dont know DSL i tried it at a few
former clients houses and it was terrible compared the cablemodem i had
at the time, so i never used it again... i am not personally using it
now i am setting up a router (or trying to) for my brother-in-law...
who do to comcast policy cant get a cablemodem...
> There are modems and there are router/modems.
>
> DSL normally uses only a modem.
> Cable normally uses a router/modem.
>
> Verizon DSL does use MAC address authentication -- and they provide
> only a modem.
> It is a real modem... dumb as a doornail. [Also, the last time I
> checked, Verizon as ISP used/required PPOE, which adds another layer of
> complexity to otherwise simple IP issues.]
>
and this instance does use pppoe as it works on my OS X machine...
> Their DHCP server will only provide an address to a recognized MAC
> address.
>
> In reality, they don't care what that MAC address belongs to, just
> don't ask them to troubleshoot anything other than a simple Wintel box.
>
> They don't really care about home networks as long as you are smart
> enough to run one on your own -- don't even think about asking them for
> help, because they will tell you that you can't have one.
>
> Stick a NAT router behind the modem, give it's MAC address to Verizon
> and the world is a happy place. (Of course, everybody is calling these
> routers "Firewalls" today, throwing grapefruit into the salad along
> with the apples and oranges.)
>
> Many cable modem routers and many NAT routers default to "spoof the
> first MAC address you see" mode. This is why power cycling them (in the
> correct sequence) works. The correct sequence is -- turn off everything
> behind it AND the "it," turn on the "it," then turn on the thing you
> want to be recognized - FIRST.
>
yeah i figured this might be a sticking point so i did this, several
times in fact, still nothing...
> As far as my experience has been, Comecast will register multiple MAC
> addresses on a single drop. But they also DO require the MAC address be
> registered.
>
> Road Runner is much more enlightened than either Comecast or Verizon.
> [Note that Road Runner is a separate company, not run by Time Warner.
> Ok, only recently purchased by Time Warner and therefore not corrupted
> by the idiots at AOL. :) ]
>
> Me, I use DCAnet as my ISP with Verizon as DSL provider -- still have
> to provide DCAnet with my MAC addresses, however. But static IPs are
> much nicer than DHCP, and I get to use real TCP/IP with no PPPOE in the
> way.
>
> In addition to PPPOE authentication, Verizon uses the same "scribbling"
> technique found in many ethernet hubs and switches, as a security
> provision and traffic limiter. If they don't recognize the MAC address,
> they simply don't pass the traffic across the backplane of the
> hub/switch. It may not even make it past the DSLAM, but I don't know
> that for certain. (DSLAM= Digital Subscriber Loop Access Module,
> located in the Central Office ... aka CO.)
>
well looking at the 'debug' output i can see the connection gets started
a session ID is given and the 'server' does respond until it gets to the
authorization... then the server doesnt respond, until the router
machine send a 'authorization failed' packet...
> I would assume that Comecast and Road Runner use similar technology in
> their aggregation schemes, but I don't know how Redback's gear normally
> works. RedBack Networks (www.redback.com) is the dominant supplier of
> networking gear to the Cable Industry.
>
i have the plog i will be posting today (i have to recompile kernel
(module) to add floppy support)
sloopy.
p.s. when useing dsl and cablemodem using the same machine to the same
site doing an ftp i get 180kbytes/sec on dsl and 380kbytes/sec on
cable... only diff between the two is my cablemodem is actually going
through a router i have here... dsl modem was connected straight to the
machine...
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