On Mon, 19 Mar 2001, Joris Lambrecht wrote: > I asssumed cable modems were encrypting there communications with some > simple built-in algorithm
It is my understanding that modern DOCSIS modems use encryption between the cable modem and the cable head end. The motorola cybersufr brand has been doing this forever as well. This prevents someone from using some sort of cable analyser to sniff datagrams after they hit the wire.. I wouldn't count on the encryption being actually super secure, but it is unlikely that someone is going to be sniffing packets by examining the signals on the coax. > as you should be, cable modems generally are equivilent to large > unswitched lans, which means any bozo with a cable modem can set thier > machine to primisquous mode and see every packet sent by any cable > modem user. (at least for that segment) This is certianly untrue for modern cable stuff. In general, the bandwidth on the actual coax is far greater than 10mbit ethernet (coming out of the modem), even if the modem wanted to it couldn't spew all packets onto the local lan. Jason
