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

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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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Get Mac-Address in Single-User Mode in Mac OS X 10.8?

I was wondering if there is a way to get all the mac addresses of my network interfaces in single-user mode in OS X 10.8. I've tried ifconfig, but since single-user mode doesn't turn on networking, I ...
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2answers
230 views

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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2answers
418 views

How can i change my MAC Address?

I want to know that how can i change my MAC address? Is there any software? What do I need? I need a program, what is automaticly change the MAC addres and of course he can generates random MAC ...
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1answer
630 views

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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1answer
155 views

Why would results differ from trying two different methods to get a MAC address?

While trying to find MAC addresses of networked machines, two different methods were used and different answers were received: Ping the machine name using the command nbtstat -a xxx.xxx.xxx.xxx (x ...
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1answer
986 views

MAC address based VLAN: How to get the MAC address of a newly attached device?

I am in a network that determines by the MAC address of attached devices to which VLAN the used switch port has to be set to. For regular devices that use DHCP the MAC address can be simply ...
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1answer
3k views

Spoof MAC address in Windows 7: Bypass

I am trying to spoof the MAC address of my new Win7 laptop. To do so I tried specifying an alternate value from the Device Manager which took no effect. I also tried from the registry, as per other ...
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1answer
60 views

Know the MAC address in the network without touching the router

I'm new to network programming and I don't know if this is the right place where to ask. I have a small router with a proprietary control panel (= no openwrt or similar). I'd like to know ...
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1answer
47 views

Issues with IP address when changing MAC address

Whenever I spoof my MAC address the WiFi fails to acquire IP automatically and I have to set it manually. My original MAC address is blocked on the network. Please help me, I'm facing IP address ...
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1answer
110 views

iPad and Wifi Access point on a MAC restricted network

I'm trying to help my sister get her iPad online in her university halls of residence. She has one ethernet port in her room and there is no wireless provided. I got her a wireless router (which is ...
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1answer
89 views

CE interface in Solaris 10 drops mac address (per ifconfig)

I recently installed Solaris 10 1/13 and proprietary TCP PEP software on a new hard drive within an old Sun v210. When the PEP software starts, the Sun's CE0 interface loses its "ether" address, ...
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1answer
644 views

The same MAC address twice on network?

Recently the Wifi network at our small company was messed up in a strange way. When I did a arp -i en1 -a I did in fact see the same MAC address listed twice. When I inquired with a ...
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1answer
685 views

Automatic rename computer based on mac address

How to automatically rename computer host / name based on it's MAC address? I have 40 PC's and I need a script to rename them automatically at logon after I use ghost. Win7 environment.
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1answer
486 views

Linux Mint chooses random MAC address on bootup

Every time I start a machine with Linux Mint 14 installed, the Ethernet NIC chooses a random MAC address to use. Is there a way to disable that behavior?
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1answer
385 views

IP conflict when connecting DHCP enabled PC to DHCP enabled laptop with its wireless and wired network connections bridged under Windows

I have a laptop running Windows XP SP3 with a wireless NIC and a wired NIC. I bridge the two network connections under Windows\Control Panel\Network Connections. This gives me a single bridged network ...
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1answer
766 views

How to change MAC address on Mac OS X 10.7.3 Lion?

I'm trying to change the MAC address for the interface en1. ifcongig Output: lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384 options=3<RXCSUM,TXCSUM> inet6 fe80::1%lo0 ...
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1answer
685 views

Another user in my network is using my IP and MAC address - what can I do?

These days I had problem with my internet connection. I have a static IP connection, but some time ago I couldn't access the internet. A friend helped me and we found out that the IP and MAC-address ...
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1answer
777 views

Copy Mac Address into Clipboard help in Windows 7

Given the batch script below. How would I be able to give me a MAC address with no dashes and add a "D" in front of it? So when I go and paste, it has a MAC address that starts with a D and there ...
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1answer
230 views

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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1answer
1k views

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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1answer
356 views

How to limit internet access time per mac address

I want to be able to limit the amount of time some devices can connect to the internet to one hour per day. As an added bonus, I would like to restrict some sites (or categories of sites) per MAC ...
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Multiple MAC addresses on a single network interface

Since the other question about this (Multiple network interfaces on a single NIC in Windows) only asks about different routing, I'm going to ask this again: Is there any way to create multiple ...
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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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0answers
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Windows - MAC address whitelist on wired network?

In Windows (XP or 7), is it possible to configure either Windows, a software firewall, or network cards such that the computer will only communicate with specific known MAC addresses (e.g. the MAC ...
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Two wireless extenders with same mac address…How to assign IP address dhcp

I have two wireless extenders, and they both have the exact same mac address (same make and model) Now, they work fine in the network, I just wanted to know how can I assign them specific IP ...
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191 views

Spoofing Windows 7/8 Mac address with 00: manufacturer?

As I am sure everyone knows starting with Windows Vista, you are not able to spoof MAC address to something that starts with a 00: For a project I am doing I have to spoof it as starting with 00: I ...
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Can I track the MAC address of my stolen laptop by service tag number?

My Dell Vostro laptop was stolen five days back. Many valuable documents were on it, so how can I trace the MAC address of my stolen laptop? Can the MAC address be traced through the service tag ...
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664 views

Internet Connection Sharing bypassing MAC Filter in Ubuntu Linux

My university gives me an internet connection by Ethernet, DHCP but they have installed MAC Filtering to allow only using my PC. I have a wireless router TL-WR340GD. which has MAC address cloning ...
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669 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 ...
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8 views

/etc/ethers is not being read by dnsmasq

I recently configured dnsmasq on Raspbian, and everything was working perfectly except that /etc/ethers wasn't being read (yes, I did uncomment read-ethers and remember to restart dnsmasq) - the ...
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29 views

Make router report MAC address when device connects/disconnects - preferably by HTTP POST

I want my router to report (preferably by making a php POST containing MAC address) every time a device connects/disconnects. I currently have a Netgear router (which is able to run dd-wrt), but I'm ...
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49 views

How can I connect to a router through a switched ethernet network?

I have a computer and a router connected at different positions to a switched ethernet network. I want to connect them as if I had plugged my computer directly into the router. As I understand it, ...
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44 views

How to best configure virtual machine network

Background: I have the following setup: Mac (OSX 10.8.5); Bootcamp partition; Virtual Machine, VM, (using Parallels Desktop) that runs from the physical Bootcamp drive; I have some Cross-platform ...
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60 views

How can I change the MAC address of hosted network?

I am on a MAC-filterd network. I have a pc and a laptop. I started a hosted network on my laptop. The Laptop has Windows 8. I set up a hosted network on this laptop to connect a smartphone. So the ...
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492 views

Bypass MAC Address Filtering

I live in an apartment building that provides internet to it's patrons as an amenity. This internet is limited to 3 devices per tenant and the devices are registered by MAC Address. As you may have ...
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71 views

WIndows firewall rule to receive nbtstat information

I'm using nbtstat.exe to gather MAC-Addresses of machines in my domain. I'm only able to get a result, if the firewall is turned off on the clients! Output if firewall is turned on: Microsoft ...
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115 views

How to find the MAC addresses of an unsecure network, on Windows, using the easiest steps?

As I try to prove that an insecure network, even with MAC filtering feature, is a bad thing (link here) , I've tried to find out the easiest way to do so. I'm trying to show that it's easy to enter ...
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57 views

Duplicate MAC address on two separate Ceton home theater PCs

I have two separate Windows 7 PCs that both use the Ceton InfiniTV 4 PCIe tuner card. The Ceton software bridges the network card with the tuner card. The resulting network bridge on both machines ...
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200 views

Separate MAC Filtering Rules for Each Frequency in Linksys EA2700-RM

I recently bought a Linksys EA2700-RM router for my home. I have set up the 5GHz network, the 2.4GHz network and the Guest network. My 5GHz network is for highest priority devices, the 2.4GHz network ...
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65 views

How to change the Wireless MAC address on a Tonido Plug (Linux)

I am working on a project where I need a wireless network where I can freely and easily change the MAC address on the Gateway. I have a Tonido Plug2, which runs linux and is only accessible through ...
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73 views

Custom scripting between grub2 sessions - chainloading

I'd like to use grub2 for changing MAC address for eth0 before booting into the main OS. I wonder how can this be done.. I have learned about chainloading, so 1 can choose a boot entry and have it ...
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86 views

Parallels Desktop VM appears as having the same MAC address as host

On Parallels Desktop (OS X) my guest VM (Win 7) is set up to use bridged networking. It would normally show up in my router's DHCP page with its own unique MAC address, and thereby would allow me to ...
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210 views

Change Mac Address on Wireless NIC

Problem I currently use a Intel(R) Centrino(R) Advanced-N 6230 network adapter, and I need to spoof the mac address in order to test security on my network. The problem is that the latest driver for ...
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0answers
65 views

Router wont clone Mac address

I have a DX-WGRTR and in the router settings there is an option to clone WAN MAC address. When I tried to clone my computer MAC address the router reboots after 25 seconds but it automatically set the ...
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71 views

Find mobile device on network

I'm trying to write a small program that will poll the network for certain IP addresses or MAC addresses (though MAC doesn't seem to show up past my WAP). My networking isn't very strong but many ...
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549 views

Router changes its MAC Addresses

I constantly lose my Internet connection. After analyzing the problem I found that my router, TL-WR741ND [TP-Link], changes its MAC address by switching through the WLAN's, LAN's and WAN's MAC ...
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ifconfig won't let me set MAC address that doesn't begin with 00:26

I have an Intel 1000 BGN Wi-Fi card and I tried to set its MAC address to 00:00:de:ad:be:ef, but this didn't work: [root@localhost .]# ifconfig wlan0 hw ether 00:00:de:ad:be:ef SIOCSIFHWADDR: Cannot ...