Why clone a MAC address? In order to have a cable modem register with the CMTS it must get an IP address from a DHCP server. Whether the MAC address is altered in the hardware or in software it is still called cloning. What is MAC Address Cloning? It is changing the MAC address on a cable modem so that it matches the address of some other cable modem, ideally one that has been provisioned on the cable system. It is difficult to change the physical MAC address in hardware, so often the process of cloning is accomplished by emulating a new MAC address in software. This address is programmed into a writable memory address of the hardware in the cable modem, and is associated with a specific user account. Each cable modem, regardless of brand, is uniquely identified by its Cable Modems ID, or MAC address – short for Media Access Control. There are dozens of websites out there giving subscribers or hackers step by step instructions on how to clone a MAC address. DOCSIS Security – If only cloning your favorite pet was as easy as cloning a MAC address on a cable modem.
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