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

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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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818 views

Need more than 32 wireless mac filters

Are there any home or small business wireless routers that have more than 32 mac address filters? I'm currently using a Linksys WRT120N with a 32 address capacity and 32 is not enough.
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How can I change the MAC address of Microsoft Loopback Adapter?

I am trying to designate a MAC address for MS loopback adapter. Installation is fine. I see in device manager, the adapter and in advanced tab, I enter the mac address I desire. But when I do in cmd ...
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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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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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Virtualize MAC addresses on a single physical network interface

Background: I am working with an application that runs on a host machine that mainly identifies clients via MAC addresses (something that I would not like to change). I am attempting to simulate ...
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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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Is it possible to recognise hardware (router or network card) just by its MAC address?

Just wondering if that is possible. Are there any naming conventions that would allow one to deduce whether the MAC address belongs to a router (of a specific brand), or a network card, etc..
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How to find MAC address of a machine in my network

At work, we have a network with internal IP addresses given to machines. How can I find the MAC address of machines in my network whose IP address is known to me? Also how do I find the MAC address ...
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222 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 ?
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DHCP Reservation vs Mac address filtering. Are they the same security?

I am able to give an ip address to a wired/wireless device based on the mac address. Other automatic DHCP is turned off. Is this as effective as a security measure as MAC filtering? It just seems ...
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Knowing the MAC adress of a stolen laptop

Recently my HP 1000 laptop was stolen, is there any way to find its MAC address? I connected my laptop to a PTCL EVO (Pakistan) WiFi USB dongle, but in the device options there is nothing I could ...
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Changed MAC address of Wireless card being ignored?

I am attempting to spoof a MAC address on my wireless card (Intel(R) Centrino(R) Advanced-N 6205) in Windows 7. Since the Driver Properties dialog doesn't have an option to change the address, I've ...
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3answers
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Permanently spoof MAC address on OSX

I'm changing my MAC address for my MacBook's AirPort because the list of devices my router can hold (only 25!) is full. Therefore, I used ifconfig and the tool ChangeMac. Everytime I restart the Mac ...
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2k views

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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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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MAC address spoofing in Windows 7 - 00 as first two digits?

I've followed this guide on MAC address spoofing. I'm trying to change the MAC address for my wireless adapter. I seem to be able to change it when doing the registry edit, but only if the second ...
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What's the difference between wlan.sa, wlan.ra, wlan.ta and wlan.da?

Tshark/wireshark (CLI) has several fields to display for WLAN, including these four (+ description from manual): wlan.sa: Source address wlan.ra: Receiver address wlan.ta: Transmitter address ...
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How to get a Linux MAC address from a Windows machine?

i have a two systems, one Windows, one Linux. Both are connected to a local network. How can I get the Linux MAC address from Windows?
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MAC Address Convention

I need help understanding MAC address convention as described here. If I understand it correctly, then MAC address 00-27-C7-38-42-11: Has 00 as the most significant byte. Has 0 (zero) set in its ...
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A Utility to Spoof MAC addresses in OS X?

Is there a menu bar style tool, or maybe a GUI program that would allow me to switch / spoof MAC addresses for the Airport / WiFi connection on OS X?
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Is the Modem's MAC Address Public? [duplicate]

Just reading about tracking and security. So far from resources I gather that the MAC address of my machine is known to the router and when the router communicates with the modem the MAC address of ...
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1answer
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How to find the wireless MAC address (aka BSSID) of any wireless access point

I have aircrack-ng 1.2 beta 3 and I wanted to know how I can find the wireless MAC address (aka BSSID) of any wireless access point with aircrack-ng (or any other program). I am currently running ...
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Does a switch know the mac address of other port of a bridge?

Let's say we have switches A and B, they are connected by bridge C. Does A knows about the mac of nics connected to B? Is it true that every time when nic on A want to send a frame to nic on B, the ...
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Is there something unique that identifies a computer from others?

I'm developing an application and I need to identify all computers that I encounter. Is there a certain technology to identify a computer? Is it the hard disk serial number?
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Will I experience any issues if I change my laptop's MAC address(es)?

I'm always worried about anonymity and privacy, and just now I realized that some programs have access to the MAC address (and actually do it), eg: Dropbox. So I was wondering if changing the MAC ...
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381 views

What's wrong with my MAC address?

I have a D-Link DSL-2650U router, and exactly one computer on the network. For reasons of port forwarding I want to give my computer a static internal IP address, so that I don't take the chance of ...
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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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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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Monitor Internet Traffic Based on MAC Addresses

I have a limited ADSL connection in my house. I want to monitor how much traffic each device connected to my router is using. I use a D-Link DSL-2730U as router. As far as I know there is no custom ...
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No IP address given to router until after cloning MAC address from another computer

This problem had me occupied most of the day until I finally solved it just a little while ago. Unfortunately I still don't understand why the problem surfaced in the first place or why my final ...
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On a switched network, why do unicast packets not addressed to me reach my NIC when I'm in promiscuous mode?

When I'm connected to a switch, the switch knows which MAC address belongs to which port. So even when I'm in promiscuous mode, why do I receive unicast packets that are addressed to other MAC ...
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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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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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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 ...
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How do MAC addresses get burned into devices during manufacturing?

I'm interested in the steps necessary to manufacture an IP-capable device - say an Ethernet card. Manufacturing the hardware is pretty straight forward since all of the devices are exactly the same ...
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A Printer that has multiple MAC Addresses?

I have a Lexmark printer that for some reason shows multiple MAC addresses when its connected to a switch. Thats so weird. Anybody had the same problem? How can I solve it and how come it has ...
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1answer
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Can an Intel 82577LM Gigabit Network Connection be spoofed?

I need to tell someone my MAC address imminently so I can be added to their router, but I am not at my computer. My laptop is a Dell Latitude E6510, running Ubuntu 12.04 with an Intel 82577LM ethernet ...
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Using a laptop with multiple static-ip routers

I use my Windows XP laptop with Wi-Fi at school, home, work and by my parents. Each of these has a different setup (one DHCP and the other three use different static IPs). Is there a way to attach a ...
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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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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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How can I find out my WiFi adapter's MAC address on Ubuntu Linux?

What command can I enter in a terminal to find out the MAC address of my WiFi adapter?
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Is my MAC address public when browsing the Internet? [duplicate]

Possible Duplicate: Is your MAC address revealed when you hit up a website? Can anybody see my MAC address when I'm on the Internet? Also, where can I check my MAC address?
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Access Methods to a computer Using MAC Address

I have my own wifi network at home & recently when I checked the active clients on the wifi I found out the there is one active client. Router shows the MAC address of this client and I want to ...
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Find some access point IP Adress from Access point Mac address on the internet?

Is there any router or database which can we access to put some access point or router MAC Address and get IP address? Or i just think the mac address changes when a packet leave a router on the ...
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Accessing the physical IP address of a computer on my network that is no longer available

I'm trying to find out how to access the IP address + MAC code of a computer (macbook pro) that I once had on my network at home. Does terminal store the 'connected' or 'linked' computer ID or IP of ...
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What's the MAC Address of my Ethernet adapter?

I have purchased a Dell Inspiron N5010 (with Windows 7). It works all fine but I need to know the MAC Address of the Ethernet adapter. I have tried IPconfig /all, but it does not show my Ethernet ...
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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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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 does a router find the MAC address of next hop router?

I know that in an Ethernet LAN, the ARP protocol is used to get a MAC address from an IP address. How does my router get the MAC address of another router on an external network if ARP is not ...