try posting in the Networking forum, the people there will be able to help you more.

Is it possible to change the MAC adress on my D-link dwl-122 USB wlan card? My ISP only allow ONE MAC adress. How do I do it? Will the traffic be messed up if all computer have th…

This is not the solution to your problem... turning on NAT on your router is. That way your ISP will only see the router (as if it was a computer) and you can have multiple compute…

but i want t change change anyway

The MAC address is burned onto ROM, physically, permanently. You won't be able to change it, but may be able to spoof it. However, this is not recommended, and having multiple spoo…

Quote: Originally posted by ginoledesma: The MAC address is burned onto ROM, physically, permanently. You won't be able to change it, but may be able to spoof it. Howeve…

The drivers for the device must support this, and I don't think that Apple's airport drivers support this. There is rarely a valid reason to do this, and the only reason I can see …

One reason MAC addresses are assigned at manufacturing is because they're supposed to be UNIQUE. Spoofing one is asking for network conflict trouble. Why ever would you WANT to g…

Quote: Originally posted by GHPorter: One reason MAC addresses are assigned at manufacturing is because they're supposed to be UNIQUE. Spoofing one is asking for networ…

http://www.slagheap.net/etherspoof/ If a mod feels that this should not be posted you can delete it. BTW,its not an easy thing to do

is it not possible to use ifconfig, like on linux?

I dont know, try it out in the terminal.

Like larksoft said, the device driver must support it. Long story short: you won't be able to do it on stock Mac OS X (10.2/10.3) without using a custom kernel.

I've been doing Macintosh networking for quite some time now, and I've never encountered a situation where changing the MAC address would help anything. You cannot have multiple d…

I have a mac osx router

And how does that change anything... we are still only talking about one MAC address... well, actually WiFI ID in this case (very similar thing). Oh... and with the price of WiFi …

WiFi uses MAC addresses just like wired Ethernet. Look at any wireless card -- it will say right on it: "MAC" with the address. tooki

Quote: Originally posted by tooki: WiFi uses MAC addresses just like wired Ethernet. Look at any wireless card -- it will say right on it: "MAC" with the address. …

Quote: Originally posted by larkost: We are splitting hairs here, but technically this is not a MAC address.... That's an AWFULLY FINE HAIR to split. It walks like a…

Quote: Originally posted by larkost: We are splitting hairs here, but technically this is not a MAC address. It is a Wireless Network ID, or WiFi ID. It serves the exact…

Quote: Originally posted by jlw: I want to know how its done. Know my enemy. Could it be that you don't even have the slightest idea about what you are asking for…

My new Belkin card is not working with the Airport software as advertised. . When I run the software it says there is no card present. I recently upgraded to the newest version of …

What would happen if you had marked a port to be forwarded to your computer on your router, and you have TWO applications that use the same port turned on at the same time? can y…

You cannot bind two different applications to the same port. The second one to ask will be refused, and probably give you an error message to that effect.

Quote: Originally posted by larkost: You cannot bind two different applications to the same port. The second one to ask will be refused, and probably give you an error m…