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

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How to find who is connected to my computer from MAC address?

When I type in the command netstat -an into cmd, I get information that one of my ports is opened from some MAC address. My qestion is how to close that port and how to find from the MAC address what ...
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How do you change your Airport or Ethernet MAC address in Mac OS X 10.6?

I have a MacBook Pro and would like to set a custom MAC address for either my Airport WiFi card, or Ethernet port. In older versions of Mac OS X, you could do it like this: $ sudo ifconfig en0 ether ...
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What does modem MAC address mean?

I have a Motorola modem, and when I connect to 192.168.100.1 (modem IP) I see 5 MAC addresses: HFC MAC Address, CPE USB MAC Address, Known CPE MAC Addresses (4), of which one has status SELF and ...
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Onboard Ethernet suddenly stopped working to router

Yesterday I had a sudden problem with my Ethernet connection to my router. My computer is a Pentium 4 with Windows XP SP3 running on it and it was working fine earlier in the day, but yesterday night ...
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How do you determine the MAC address on a CR-48?

You get a CR-48 in the mail. You want to use it but the wireless network only allows access to specified MAC addresses. How do you determine the MAC address?
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How to bind IP address to MAC address in Windows XP?

I want to bind IP address to MAC address on my computer, how to do it?
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MySQL MAC Address Authentication with freeRadius

I have freeRadius up and running with the mysql extension. Currently I am authenticating devices using their mac-address which is stored in a text file (as per http://wiki.freeradius.org/Mac-Auth). I ...
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Connect to the internet by changing the mac address

My ISP allows only one computer so I have to change the mac address. On the other computer I use ubuntu and I've changed my mac address with both ifconfig and macchanger. The internet still doesn't ...
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If I format a machine that's running Ubuntu and install Windows, will the physical network address change?

My ISP binds the access to the physical address of my computer. I bought a new one yesterday and I had to call them to tell them the new physical address. Will it change if I format the computer and ...
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How to generate a valid random MAC Address with bash shell

How can i generate a valid random mac adress with bash. The first half of the adress should always stay same like this 00-60-2F-xx-xx-xx just the x value should be generated random?
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VPN authentication and MAC addresses

I have to set up a VPN (various clients connecting to a web service on a server, which is also the VPN server) and I want to make sure that no user will share his/her credentials with third parties. ...
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Is personally identifying info on user hardware sent through internet?

I've read here that it's possible for a website to use cross site scripting to pull your router's MAC address without your permission. This can then be used to determine your location through Google ...
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Finding the external (PPPoE, WAN) MAC address of an ADSL router

My ISP is Orange Internet, I have recently ditched my crummy "livebox" and moved to a more stable BT Business Hub with the firmware flashed back to the original SingTel ROM. The thing works great ...
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How can I block a computer from my linksys router by IP or MAC address?

How can I block a computer (not on Wireless) from my linksys router by IP or MAC Address? I am using a linksys WAG200G.
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How reliable is changing the mac address in /etc/network/interfaces?

I'm running ubuntu server 10.04 If i change the mac address by adding (in /etc/network/interfaces) hwaddress ether 12:34:56:78:9A:BC How reliable is this? Can someone still determine my real mac ...
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Is the MAC address used on the DLL layer unique throughout the world for a device, lets say this computer?

Is the MAC address used on the DLL layer unique throughout the world for a device, lets say this computer?
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How do I find out the MAC address of my Wi-Fi card in Windows 7? [duplicate]

Possible Duplicate: How to locate MAC address in Windows 7 How do I find out the MAC address of my Wi-Fi card in Windows 7? Is there some screen in the GUI I can look at? Or something in a ...
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Is is possible to change MAC address of a WiMAX USB adapter?

Wondering if it is possible to change the MAC address of a WiMAX USB adapter (read WiMAX, not Wi-Fi) manufactured by Motorola, ZTE, Intel etc. I've tried a few tools that did changed the MAC address ...
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Office 2010 evaluation registration

I would like to evaluate Office 2010. The thing is that the installation and registration is executed online. However, when I recover my laptop to its original factory shipped status it seems that I ...
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How can I randomize my MAC address on boot on both iOS and Mac OS X?

I would like my MAC addresses on my Mac OS X (iMac) and iOS devices (iPhone, iPad) to be randomized on boot. I have no idea how to generate the random MAC, nor to insert it into the boot process. Any ...
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What is a MAC address, and what does it reveal about me?

Does my MAC address list my name, ect? How do I find out exactly what the MAC address tells me? I know it's the "physical address" of my laptop, but what exactly does that mean? This is what my MAC ...
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How to know if a network is locked by MAC address

If I unplug a internet cable from another PC and plug it in my laptop, but it says no internet connection. Then I've been told that the network restrict certain MAC address. My question is that is ...
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Linux software to query the Skyhook database

I'm a Ubuntu user. I'm looking for some software which will query the Skyhook database with the MAC addresses of all the Wi-Fi hotspots in range of my computer and display the results. I'm looking for ...
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How to use the same internet connection over two machines with different MAC addresses?

My service provider does some binding to my Ethernet MAC address. So, I am not able to use the connection on a second machine that I need to use (I need to use both the machines, though not at the ...
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Is there any harm in changing the mac address of my LAN adapter?

My internet provider has done static binding to thee MAC address of my adapter. Now I need to use the same internet connection on another machine also. So, I figure that one way of doing that is to ...
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Change MAC Address on Windows 7 - BootCamp (Macintosh)

I need to change my MAC address on my Windows 7 partition on my Macbook Pro. I have tried changing the registry value on my Windows to spoof my address, but that didn't work. I have also tried to use ...
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Given a PC's MAC address, can I find its IP?

Is there a way to get the IP address when all you have is the MAC of an item?
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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 ...
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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 ...
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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?
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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 ...
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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 ...
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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 ?
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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 ...
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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 ...
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IP Address vs MAC addresses

why do we need ip addresses if mac address is enough to identify the machine???
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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 ...
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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 ...
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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?
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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?
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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. ...
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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?
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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 ...
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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?
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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?
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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?
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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 ...
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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 ...
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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?
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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?