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

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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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How to restore MAC address in Linux?

I have changed my MAC address in my Linux machine using ifconfig. Now the problem is I have not saved my original MAC address. I want to restore it without rebooting. Is there a way to do it?
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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
19 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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3k views

Can I change the MAC Address on my Airport Extreme WiFi Router?

I am trying to do some diagnostics on my Time Warner Wideband Internet connection. To do so I would like to spoof the MAC Address on my AirPort Extreme WiFi Router. I cannot find a way to alter the ...
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1answer
20 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
15 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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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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62 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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87 views

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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334 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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How to block the MAC Address in Huawei HG532e wireless router?

I am using a Huawei HG532e wireless router and I would like to block some of the smart phones of some of the workers who are no more working with us. Please help me to do this work as early as ...
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3answers
67 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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24 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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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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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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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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32 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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4answers
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How can I telnet from Windows to my server by MAC address?

How can I telnet from Windows to my server by MAC address? C:\Users\Asep>telnet D4:CA:6D:46:C9:98 23 Connecting To D4:CA:6D:46:C9:98...Could not open connection to the host, on port 23: Connect ...
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2answers
251 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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3answers
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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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210 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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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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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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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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Why would my router have different MAC addresses for IP and IPv6 transactions?

Today I was using tcpdump and I noticed my computer was having IPv6 traffic with a particular MAC address that I could not match with an IP using nmap or arping. After looking at the tcpdump logs a ...
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2answers
61 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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Why do we need IP addresses to communicate within the local network segment?

Because MAC addresses are only usable across the local network segment, we use IP addresses to communicate with other segments via routers. Meanwhile, for local targets, ARP is used to translate IPs ...
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96 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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77 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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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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160 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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226 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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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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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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How to change the MAC address in Win 8 to spoof a Roku Player through a WiFi splash page?

My Linux laptop died yesterday and now I can't watch TV. Let me explain. I use a Roku Player to stream Netflix shows to my television; and a year or two ago, the Internet Service provided in my ...
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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
492 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
896 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
424 views

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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139 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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45 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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2answers
314 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
449 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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What is the exact use of a MAC address?

I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding ...
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2answers
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How to avoid exposing my MAC address when using IPv6?

On my Macs, each IPv6 address includes the MAC address of a specific computer (not of my router). Sites such as ipv6-test.com not only show it, but even tell me it belongs to an Apple computer. This ...
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1answer
306 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 ...