At 10:18 PM 3/20/02, John Green wrote:
>my box (windows workstation) is connected to a cable
>modem (i guess motorola) and cable modem connects to
>my cable tv network and in turn to internet.
That's typical. So you were doing the ARP -A on a Windows machine, I guess.
And you're seeing remote st
my box (windows workstation) is connected to a cable
modem (i guess motorola) and cable modem connects to
my cable tv network and in turn to internet.
--- Priscilla Oppenheimer wrote:
> At 08:05 PM 3/18/02, John Green wrote:
> >i guess you are right that there is some sort of
> >filtering bein
the original post asked for:
"I connected to my cable modem and fired up my packet
sniffer. I did not see anyone elses traffic on the
line so "
--- bergenpeak wrote:
> Hi Sam,
>
> The shared vs non-shared issue DSL providers mention
> is somewhat
> misleading. In any residential cable or DSL
At 08:05 PM 3/18/02, John Green wrote:
>i guess you are right that there is some sort of
>filtering being done.
>because the arp command gives the same physical
>address of the hosts in my subnet.
Where are you running this ARP command? On a router, on a workstation? What
does your network look
Good post. One minor correction, the COM21 modems are DOCSIS 1.1 certified.
- Original Message -
From: "bergenpeak"
To:
Sent: Tuesday, March 19, 2002 9:53 AM
Subject: Re: Is cable network really a shared medium? [7:38705]
> Hi Sam,
>
> The shared vs non-shared
Hi Sam,
The shared vs non-shared issue DSL providers mention is somewhat
misleading. In any residential cable or DSL network, you will
have stat muxing. In a cable network, this happens on the HFC
network. In a DSL network, this happens at the Agg router (the
one that terminates all of those
i guess you are right that there is some sort of
filtering being done.
because the arp command gives the same physical
address of the hosts in my subnet.
Internet Address Physical Address Type
211.16.12.1 00-05-5f-ee-e0-54 dynamic
211.16.13.14 00-05-5f-ee-e0-54
Sam,
You can check out the DOCSIS standards here:
http://www.cablemodem.com/
(check out the "specifications" section)
You should, at a minimum, see broadcasts from the other devices on your
cable network. Mostly you will see arp broadcasts, but some Windows users on
"raw" cable may still be ou
Some parts of AT&T's cable networks are unfiltered at layer 2, so you can
catch other's broadcasts (even the routers who run OSPF on a broadcast
network in case you were interested). It definitly is a shared medium in my
town.
--
RFC 1149 Compliant.
Get in my head:
http://sar.dynu.com
""Prisc
At 02:56 PM 3/18/02, sam sneed wrote:
>I just changed services from DSL to cable modem. I have heard from people,
>including verizon, that cable is not as secure as DSL becuase it is over a
>shared medium. I connected to my cable modem and fired up my packet sniffer.
>I did not see anyone elses tr
depending on the carrier, docsis could be implemented...I have not tcpdumped
my current connection (through att) but I believe att does filter.
a quick search on google yielded some docsis info but I didn't see whether
or not it was done at the modem or the switch. I'm guessing the latter. I
wou
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