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     dynamic

for all other hosts as well the physical address is
same as above. I guess the physical address is of the
access server that out host is connecting to (or
rather for the same subnet all hosts connect to this
same access server, could be a dhcp server as well).

i guess it is a switched environment. but still the
physical address for different hosts should show up as
different. 
anyone knows what is going on here ????



--- 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 traffic on the line so i
> am assuming the bandwith
> is shared( a known fact about cable access) but is
> somehow filtered at the
> cable modem(bridge). Does anyone know if this
> assumption is true and the
> inside details of the how data is transmitted over
> the cable network? A link
> to a whitepaer would be great.
> 
> thanks
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