I want to change MAC address in RedHat 7.2 , I heard it is posible with "ifconfig". Please help.

Here is what the man page for ifconfig says. I really don't suggest changing your MAC address unless you REALLY know what you are doing, because you could seriously screw something up. hw class address Set the hardware address of this interface, if the device driver supports this operation. The keyword must be followed by the name of the hardware class and the printable ASCII equivalent of the hardware address. Hardware classes currently supported include ether (Ethernet), ax25 (AMPR AX.25), ARCnet and netrom (AMPR NET/ROM).

Well er no you can't screw things up (you might however not be able to use it if your MAC address needs to be registered with a dhcp server - eg cable companies) THe change of the MAC address is not perminant with ifconfig, just for the duration of uptime (for perminant change you need a firmware upgrade ONLY availabel on new cards). to change MAC address on ethernet card eth0 ifconfig hw ie. #ifconfig eth0 hw ether ??:??:??:??:??:?? note only HEX characters are valid in the 12HEX MAC address. J

Hi, i want to make more mac address on a single ethernet card. is it possible?

try: ifconfig eth0:0 ipaddress ifconfig eth0:1 ipaddress .. etc.

My Winblows instructor claims that this feature can only be done on a card that has the capability to store the MAC address in EEPROM, because the MAC address is used in CSMA/CD physical layer protocals. ifconfig changes the MAC address, can it do that to any Ethernet Card? Let me know what you guys think. It would be good to know for security reasons. Pasty.

any idea where to put the ifconfig eth0 hw ether command in debian linux?