A MAC address is a unique identifier for network adapters or network interface cards.

learn more… | top users | synonyms

2
votes
1answer
4k views

Do laptop docking stations have their own MAC addresses?

My laptop has an ethernet connection, and there's another on the docking station. Can I connect using both at the same time? Will they have different MAC addresses? I'm assuming the ethernet port ...
7
votes
12answers
5k views

Why is IP to MAC address translation needed?

On networks that use the TCP/IP protocol, why is the IP address translated into a MAC address? I mean, when every device knows its IP, why further use the MAC address and not use the IP number as ...
0
votes
4answers
13k views

How do I find the MAC address of my laptop?

I tried to find out the MAC address in my notebook by Run → cmd → config /all but I didn't find it there. How do I find the MAC address of my laptop?
3
votes
1answer
5k views

Assign IP's to certian mac addresses in dd-wrt

I have a Linksys WRT54G/GL/GS that I am running DD-WRT v24-sp2 (10/10/09) vpn - build 13064 on it and for the life of me I can not find a way to assign ip's based on Mac address. Basically I have a ...
1
vote
0answers
706 views

How to blacklist a problem Wi-Fi access point by MAC address in Mac OS X

So I am a small Mac-user cog in a larger Windows-based network machine. The network here works fine for most everyone else (on PCs), but I have random timeouts and issues with the Wi-Fi. Luckily, I ...
2
votes
1answer
194 views

Shorthand MAC addresses

If I have a MAC represented as: 0:b:23:26:32:52 is that the same as: 00:0b:23:26:32:52 or: 00:bb:23:26:32:52 ?
3
votes
2answers
8k views

Why did MAC-Adress Cloning Fix My Router?

I have a Belkin router, and about a year ago, I suddenly lost my internet connectivity from Comcast. The internet worked fine when I plugged it right into my laptop, so I just ignored it. When I ...
2
votes
3answers
3k views

How do the routers communicate with each other?

Let's say that i want make a request a to a web page which is hosted in Europe (i live in USA).My packets only consist the IP address of the web page, first the domain name to ip address ...
23
votes
14answers
16k views

IP Address vs MAC addresses

why do we need ip addresses if mac address is enough to identify the machine???
47
votes
6answers
19k views

Is looking for Wi-Fi access points purely passive?

Say I carry a Wi-Fi enabled phone or laptop through an area where there are WAPs. Assuming that I don't actively try to connect to them or otherwise interact with them, is it possible for the owner ...
1
vote
3answers
946 views

Discover MAC address

I've to setup a bunch of servers, and I need to discover their MAC addresses with the following setup: MacBookPro >----------< Server The Macbook Pro is directly connected (not behind a ...
3
votes
1answer
4k views

Does a USB modem have its own MAC Address?

My USB modem is now showing its MAC address in ipconfig /all. So does that mean that a USB modem has its own MAC address?
9
votes
1answer
4k views

Is your MAC address revealed when you hit up a website?

When you hit up a site, such as cnn.com, does the TCP/IP packet contain the MAC address of your network card? Could cnn.com theoretically record my MAC address?
0
votes
3answers
4k views

How do I find out the Mac Address Firefox submits for Geolocation?

I moved, but have the same router and cable box. Now when I visit Google Maps it still shows my old location. I went to the SkyhookWireless update page to update my Mac Address with my new location. ...
0
votes
2answers
630 views

WiFi IP filtering?

Is it possible for a WiFi host to filter WiFi service by a computer's local IP, similar to how it's possible to filter WiFi clients by MAC Address?
1
vote
3answers
18k views

Spoof MAC address from IP command

I'm trying to spoof my MAC address on a modified version of Linux (Android). The main problem is that because it has been stripped down, the ifconfig command has been taken out, and I only can use the ...
4
votes
2answers
4k views

Network interface missing in ubuntu after changing MAC address

Hi I'm using Ubuntu Server on my VirtualBox. But I changed the MAC address of the NIC from virtual box settings. But now I cannot find the interface when I enter ifconfig. What should I do?
1
vote
3answers
3k views

MAC address spoofing not working in Windows

In Windows 7 I tried setting my MAC address by changing it via adapter properties (Locally Administered MAC Address), but ipconfig /all still shows the old address, even after rebooting. Any hints?
2
votes
4answers
7k views

In computer networks, when is a MAC address used and when is an IP Address used?

MAC address and IP address are used to uniquely identify a computer. When is an IP address used and when is a MAC address used?
1
vote
1answer
1k views

Can a Virtual PC emulate a mac address for the network card too?

Can a Virtual PC emulate a mac address for the network card too? It probably is possible but I think the Virtual PC / VirtualBox / VMWare / Parallel, all probably won't support it as the mac address ...
70
votes
5answers
963k views

How do I locate the MAC address of my computer?

I am unable to locate the MAC address in a new computer with Windows 7. I've tried ipconfig /all in the console to which I got no items match your search. I also tried getmac. A screen flashed very ...
5
votes
4answers
6k views

Is it possible to change my MAC address?

The wikipedia article on MAC address mentions that it is stored in the ROM of the NIC. How can the MAC address be changed then?
0
votes
2answers
284 views

How do you get the Mac-address of a Networking Card in Windows?

I'm running XP SP2 and need to get the MAC address of the card running on this machine. Where do I get that from?
6
votes
9answers
34k views

Can a MAC address be traced?

Can the MAC address of a computer be traced to the serial number of a computer? I have the MAC address that is trying to break into my wireless router. Knowing the serial number of the computer would ...
8
votes
8answers
22k views

How do I change the MAC address of my network card?

I have a local network in a Windows system where the Admin gives permission to the PCs by their MAC address. But he is on vacations and I have a new PC. How can I change the MAC address of my new PC ...
11
votes
4answers
42k views

Inverse ARP lookup

How can I do an inverse ARP lookup in Windows and/or Linux? Say that I have the MAC address of wireless access point which is up and running in the network, but I forgot it's IP address?
11
votes
7answers
5k views

Why is MAC-based authentication insecure?

Most wireless routers can use MAC-based authentication as part of their overall security scheme. It seems like a good idea, but I've heard that it is very ineffective, because it's easy to spoof MAC ...
16
votes
2answers
12k views

What happens when two computers on the same network have the same MAC address?

I was reading an article on WEP cracking, which said that filtering MAC addresses was not enough, since there are tools to change what the computer reports as its MAC address. This made me wonder ...
2
votes
2answers
1k views

Change MAC address for TEW-444UB wifi USB connector?

The free wifi networks in the public libraries where I live only allow 2h/day share. They use the MAC address to check if a user has used up his daily quota. To bypass this limitation, I'd like to ...