Cable Modem Hacking
receives downstream data via cable and sends upstream data through a telephone
line at 14.4Kbps. The cable modem contains a DHCP server that assigns the
proper ip, gateway ip, and nameserver information to the first computer
that requests it. The modem's ip information is updated by isp when the
modem is first powered on. Each modem is assigned 2 ip numbers. One for
the upstream and one for downstream.
For more info on Hybrid cable modems, see http://www.hybrid.com
|Top view of the modem is shown to the right.
|To remove the case, unscrew the 4 screws on each side of the modem.
|Unscrew the 2 screws in the back plate and also the nut that secures the coax jack. The cover can then be slightly bent and lifted off the unit.
| To the left is a picture of the guts. The modem consists of 2
circuit boards. The smaller board (telephone modem) is shown on the bottom
The main board contains a variety of IC's from various manufacturers and is located under the modem board.
|We can clearly see the cheap piece-of-crap Rockwell 14.4 modem chipset
used here. Could there possibly be a way to increase our pathetic uplink
SURELY ENOUGH there is something we can do.