How to change MAC adress on Zoom X5 DSL modem?

No. Not to my knowledge. I know of several cable modems which this can be done. If you were to change it, you'd most likely have to let your ISP know about it.

Hi joyblade,
Mac addresses are hardcoded into each hardware device.  Just curious, what would changing it help for security?
new hardware = new MAC address.  There are spoofing tools but I do not belive they would work in this case.


Good luck!

There would be no added security. The only time I have heard of anyone changing the MAC of any broadband modem is to assist in "uncapping". This is usually done with cable modems, specifically Motorolla SB3100,4100,4200. There is no way to uncap a SB5100 so what people do is register the MAC addy of their 5100 with their ISP then flash the firmware of their 3100,4100,4200 and spoof the MAC of their 5100. Then proceed to feed their own config file through the ethernet port of the modem.  As far as security goes, the only two entities that are going to know the MAC addy of the DSL modem are you, and the ISP. If you change the MAC addy, the ISP will know.

I really do not want to go into too muck details but just a hint about how it can increase my security. With a new MAC reverse tracing would be harder for some unnecessary people whom don't like me much. ;)
Thank you very much again. And actually I just want to know if there is really a way to change the mac on a dsl modem.

Not leagaly.  I doubt your connection with work if you try.