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

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How is uniqueness of MAC addresses enforced?

Again and again I read that devices are uniquely identified by their MAC addresses. But how are MAC addresses determined? (And do they tell us anything about the device which they represent?)
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1answer
30 views

Strange MAC address on Wireshark screen

I trying to see Wi-Fi (802.11) packets through Wireshark. Here's information of my wireless interface: $ ifconfig wlan1 Link encap:Ethernet HWaddr c0:f8:da:21:ce:68 # and so on blahblah ...
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1answer
20 views

Change MAC address of Intel(R) Dual Band Wireless-AC 7260

I tried to follow the instructions here, but my card doesn't seem to have that option. Is there another way to do this?
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1answer
42 views

How to change MAC address on Windows Phone 8.1? [on hold]

I did't find any method to change MAC address for Windows Phone devices, unlike the Android devices, so I want to know if there is a way to change my Lumia 525 MAC address.
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1answer
52 views

Find MAC address of a device on the other end of an Ethernet cable

Before anyone points it out, this is a different question to Check MAC address of a device on the other end of an Ethernet cable. I'm interested in an automated way (rather than Wireshark, etc) of ...
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1answer
31 views

What will happen if two computers having same MAC address and same IP address in the network?

What will happen if two computers on the network are having same MAC and IP address? Assume 20 to 25 computers are present in the network and they are accessing the internet through single gateway. Is ...
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15 views

Single MAC and IP address used by two computers [duplicate]

What will happen if two computers on the network are having same MAC and IP address? Assume 20 to 25 computers are present in the network and they are accessing the internet through single gateway. Is ...
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1answer
20 views

Configure MAC filter for H5004NK router

I would like to block my neighbor's connection to our WiFi. How do I fill out this form?
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1answer
19 views

Hyper-V physical NIC MAC and virtual switch MAC

Can this situation lead to a conflict of MAC addresses? I used before Windows 8.1 and Server 2012 R2 to setup VM environments several times already, but now I'm doing it by hand (meaning Powershell), ...
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1answer
32 views

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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1answer
69 views

Get users Mac address if connected to WiFi network (MikroTik)

I would like to log the users Mac address to a database hosted on a web server. I was wondering if there is a variable I can use like for example $mac-address which will replace it with the users mac ...
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3answers
68 views

Why do we need MAC address? [duplicate]

I have read that if we are using NAT, router knows where to send the incoming packets in the local network based on TCP/UDP port information. If this information can be used to uniquely identify each ...
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1answer
28 views

Why is my MAC address invalid?

My macbook has this MAC address : 68:A8:6D:09:2A:D4 This page tells me that its invalid. This page correctly identifies the brand of the mac address. I have a MAC filter for my router and I ...
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0answers
25 views

Disabling/Enabling WLAN connection

Question: What is the terminal command behind right clicking on the wireless icon (Ubuntu 15.04) and then unchecking "Enable Wi-Fi" the box? Why am I asking it? macchanger just work for me when I ...
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32 views

internet disconnects after cloning MAC in Ubuntu 14.10

Whenever I connect the LAN cable to my new laptop, there is connection, but the web is not accessible due to MAC mismatch (my old laptop's MAC is registered with my ISP). When I spoof the MAC address ...
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1answer
33 views

Old MAC Address on a MacBook Pro

My computer MAC Address has been registered in a specific wired LAN network. But yesterday, I had my laptop repaired and the motherboard was replaced. Therefore, it has a new MAC Address and it cannot ...
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50 views

Can not bypass MAC address filtering

I add a white list filter by mistake to my wifi modem router, so I want to change MAC address to that IP. I run this command: ifconfig wlan0 down ifconfig wlan0 hw ether xx:xx:xx:xx:xx:xx ifconfig ...
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1answer
61 views

How do I find the MAC Address of every networking of my notebook in win 8?

I tried getmac command in command prompt. What are those '3' devices of which the MAC Address is represented? I Also Tried this Command: ipconfig /all Now, What are these "5" Mac ...
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3answers
52 views

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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216 views

MAC addresses for virtual machines

As I understand it, MAC addresses are assigned to every physical device by the manufacturer. By extension, how are MAC addresses assigned to virtual machines - for example if I create a new virtual ...
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1answer
42 views

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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0answers
34 views

getmac ERROR: Invalid class

When trying to run getmac from the Windows Command Prompt, I am getting ERROR: Invalid class. As a Windows utility, I'm not entirely sure why it's broken or how to go about fixing it. Can anyone ...
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2answers
54 views

Is there any way to change LAN MAC address on Wi-Fi router?

I have a Wi-Fi router which has WLAN MAC address and LAN MAC address. I can spoof WLAN MAC address easily, but can not spoof in the same way on LAN MAC address. How can I spoof the LAN MAC address?
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68 views

How to display the mac address of known host by ssh

I want to know the MAC address of a machine that I don't have access to at the moment. However, I have a known_hosts file from ssh with a valid entry, and given that I get warnings about changing MAC ...
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104 views

QEMU-KVM macvtap nic passthrough with which MAC address?

I want to give a host nic to a guest in macvtap/passthrough mode but, which MAC address I've to use for correct frames inter-transmission? The real address (of physical nic), or the virtual one? ...
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2answers
81 views

Prevent traffic to mac address using ebtables

I have an interface on a remote host: 2: eth0: <BROADCAST,MULTICAST,UP,10000> mtu 1500 qdisc pfifo_fast qlen 1000 link/ether 00:05:68:02:68:dd brd ff:ff:ff:ff:ff:ff inet 192.168.3.1/24 ...
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1answer
13 views

Port restrictions and MACs

I have a question regarding connections within a university setting. In my room I have two network points. One for my pc and one for my voip phone. Each network port is restricted to one mac address, ...
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2answers
167 views

Why does internet get disconnected after I change mac in Kali Linux?

I have written this script to change my mac in Kali Linux: ifconfig eth0|grep HWaddr ifconfig eth0 down&&macchanger -r eth0&&ifconfig eth0 up ifconfig eth0|grep HWaddr The problem ...
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1answer
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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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65 views

Windows 10 under VMWare 11 caches MAC address

I have VMWare Workstation 11 and network for VMs configured as NAT. DHCP configured manually so every VM has fixed hostname and IP address. I've installed Windows 10 TP to one of the VMs. Then I ...
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1answer
67 views

avoid sock puppet detection(creating two account) in a site

some sites block your account if they detect a sock puppeting (creating more than one account for one person). Somehow when you create an account**(A)** ,then reinstall your system and create an ...
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3answers
519 views

How to find IP address of a DNS server

I'm a CS student and currently taking a (basic) course in information security. I was given an assignment which required me to analyse a given .pcap file using Wireshark and obtain information on the ...
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1answer
968 views

How to find the MAC address of access point that working on a roaming system

I’m working in very big oil and gas company. We have many many access points in our offices, each access point broadcasts 3 SSID’s. The access points with roaming system. On the back of each access ...
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1answer
147 views

Send packet (frame) with different 'Sender's MAC'?

I was just studying the Network+ book where it explains the contents of a Frame using blocks to represent a set of bits. Moving onward, it states that the first 'block' is the Recipient's MAC address. ...
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2answers
332 views

How to bypass router access control?

For the past month, me and my father have been having a friendly war about the internet in my household. Basically, after 9:30 at night, he turns off my internet, by setting a schedule that stops a ...
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1answer
467 views

Can Amazon or eBay track and identify your PC or router MAC address? [closed]

I read on many blogs about Amazon seller department being able to see seller's MAC address. Is that true? I mean I understand that they can track you with your public IP address or browser ...
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1answer
46 views

NIC MAC address is different than it should be

I have cheap Tenda W150M router that is working as a WLAN card in Client+AP mode. The router MAC Address and WLAN BSSID are xx:xx:xx:xx:xx:68(those are listed in the router admin page). Now on my main ...
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1answer
314 views

Can I restrict access to the tplink wifi network to anyone except specified set of Mac addresses?

I have the router TP-Link N750 (TL-WDR4300). I'm familiar with the Mac addresses filtering but I need to restrict all user from joining the network not from Internet after joining the network, so ...
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2answers
254 views

How to change the mac address (permanently ) or identify a 3G USB dongle?

I've bought two 3G usb dongles and they both have the same mac address. After some research I've found this is a common issue so buying new ones may not fix the issue. I need to identity a specific ...
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2answers
36 views

Vendor or service of this particular MAC Address

I found weird activity reported by my software that suggested multiple login attempts. The software is installed on that person's computer. Don't worry the I am allowed to post the details up here ...
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44 views

Spoofing MAC Address - No Connectivity [closed]

I have a Windows Server VM, running on RHEL, whose MAC I have spoofed through Device Manager. The spoofed MAC address appears to have been set properly and is shown when I run 'getmac'. The VM ...
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185 views

nginx auth_basic for mac address verification

nginx auth_basic for mac address verification Is it done? Do you have examples? thnx location = / { satisfy any; deny all; auth_basic "Restricted"; ...
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3answers
351 views

Blacklisted MAC address for modem

I currently lease a router for High Speed Internet from Comcast. I have just purchased my own router online from Ebay to avoid monthly rental charge. The ebay-purchased router is the same make and ...
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264 views

WiFi Hotspot MAC Address [closed]

Say I have a network consisting of multiple computers where (1) access to the network itself is regulated based on the MAC address and (2) access to the internet is protected by a proxy. Say now I ...
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1answer
321 views

Are the Bluetooth and Wi-Fi MAC addresses assigned in the same address space?

Are the MAC addresses of Wi-Fi, Ethernet and Bluetooth devices assigned in the same address space? Or are MAC address unique irrespective of the physical layer? Is there a possibility of MAC address ...
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437 views

What does “Decloak: (Mac Address)” mean in Airodump-ng

I have Reaver 1.4 on Ubuntu 14.10 and a Realtek RTL8187SE B/G adapter, and I got a message saying: "Decloak: XX:XX:XX:XX:XX:XX (the X's would be letters and number of the MAC Address). What does this ...
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Does my router broadcast the original WAN MAC address when rebooting?

I have a cloned WAN MAC address to connect to my ISP, does anyone know if it broadcasts the original router WAN MAC address during the router reboot process?
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1answer
2k views

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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52 views

If I want to spoof my wireless router's MAC address for privacy reasons, how should I pick one?

Like the title says: how do I decide which "random" MAC address to assign to a machine in order to hide the real one? Just entering a random one doesn't feel very... scientific. Thanks.
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1answer
207 views

Find MAC address of laptop of stolen laptop

Is there is any way to find MAC address of stolen laptop? I previously use my Facebook and email account on the machine. Can I extract my MAC address from email of Facebook account. Give me technical ...