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Questions tagged [mac-address]

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

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How can I determine that a MAC address belongs to a VPN? [migrated]

While launching ipconfig /all, I can see the description and the physical address (MAC address) of the computers on my computer: ... Description : Intel ... Physical address : 48-4D-... ... ...
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00:00:00:00:00:00 mac address in dlink router [closed]

this morning I logged into my router and I found all my devices, and 00:00:00:00:00:00 mac address with 0.0.0.0 ip; then I made some tries and I seemed that when I turned down, only the screen, on my ...
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Logging MAC of all machines on my network

I would like to know what machines connect to my home network. My thought was to have a MySQL database with an entry for each machine, with the timestamp of when I saw it last, and a tally of how many ...
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135 views

Router or adapter MAC address visible with javascript?

I would like to know when a site uses javascript is the MAC address of the specific router being used or that of the computer's adapter visible, which one?
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Running macchanger in Kali Linux VM Disables Network Connection

Below is my version of kali which is a vm running on VBox 5.2.22: Linux kali 4.18.0-kali2-amd64 #1 SMP Debian 4.18.10-2kali1 (2018-10-09) x86_64 GNU/Linux As the title says, after changing my mac ...
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1answer
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MAC Address Connection with Purchase Info [closed]

Other questions on this forum have made it clear that the MAC address is not mostly not visible outside the local area network. I want to dig a little deeper about this. When one buys a tablet or ...
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How to identify one user by MAC Address

one simple question. I assume, that the MAC Address is stored in the IP packets, even when the IP packet recieves by the host at the other end. I do know that the IP Address can be change by means of ...
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What devices are connected to a given Access Point?

How can I list what devices are connected to a given Access Point? I have a central router for DHCP and gateway, and an AP that does not do these. So, most diagnostics do not recognize the ...
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Is there a 'legal' requirement to ship with unique mac addresses? [duplicate]

Just checking on something that I have just come across. Is there a legal requirement for vendors to ship with a unique MAC address? I understand the issue surrounding purchase of unique licenses, ...
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Do I need MAC addresses if I'm connecting Raspberry Pi Zeros together together on a subnet via a switch?

I'm connecting a few Raspberry Pi Zeros together over Ethernet through a switch on a subnet. I've assigned them all static IP addresses and I'm wondering if that is adequate or if I also need to ...
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How do I add a device to my network on the linksys ea7500 using the MAC address?

I have a Smart Wifi router linksys ea7500, and a proprietary microcontroler with the mac address DE:AD:BE:EF:CA:FE. I am not sure how to reprogram the MCU yet. When I access the administration page ...
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How do I change the MAC address of my WLAN card?

I want to change the physical address because of a minor network issue, so I searched How to change Mac address with Google. Since my WLAN card does not support changing the Mac address in the ...
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1answer
34 views

Is my wireless router's Mac address revealed to the website?

I know a computer's MAC address is hidden from the website from the earlier post, but what about Mac address of wireless Router?
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2answers
156 views

Is a MAC address unique [duplicate]

Cam a MAC address be altered or is it like a computers fingerprint and remains unique to that computer only. If a person has the computers MAC address can it be used to identify that computer ...
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533 views

Are MAC addresses stored in the WIndows 10 registry?

That might seem like a simple question but it isn't. A USB-Eth adapter creates over 200 entries in a Win10 registry. None of them have the MAC address as a value; the adapter does get a GUID and the ...
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80 views

What can cause a switch to change it's MAC address?

I am puzzled as a part-time/hobbyist network manager why some HP 1910-24G switches' MAC addresses have suddenly changed to something else that they are supposed to be, as written on their factory-...
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221 views

How can i clone MAC address on Windows like i can on Ubuntu

Recently i bought a new laptop, with a Qualcomm Atheros AR9485 Wireless Network Adapter. My old laptop had an AR9285. Let's say that my old laptop's MAC was B7:AA:BB:CC:DD. My new laptop has the C9:...
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In WLAN network, does ARP always show the mac address of device's Wi-Fi interface?

Say, if some device is accessing the server in the local network, while being connected to it via WiFi, would an ARP command sent from that server always show the same mac-address, as the device ...
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Debian and TP-Link Archer T2UH ( AC600 ) - unable to change back MAC address

I changed MAC address on my TP-Link Archer T2UH ( AC600 ) running on my Debian 9.3 via iwpriv ra0 e2p 04=MAC_SEG1 iwpriv ra0 e2p 06=MAC_SEG2 iwpriv ra0 e2p 08=MAC_SEG3 Unfortunately, I'm not able ...
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How to assign static ip to devices connecting over wifi using Network Manager?

I have several devices connected to my wifi, and I need to assign them a static ip address, but NetworkManager gives them sometimes different ip addresses. I tried adding a file in /etc/network/if-up....
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3answers
10k views

How to get the MAC Address and signal strength of nearby wireless devices?

Is there a way to get the MAC Address and signal strength of nearby wireless devices from something like a phone or a laptop, or by using an access-point?
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Changing Wireless Mac Address

I have a tp-link wr1043nd wireless router and i just moved to a new location, and my router's address is still my old address. I understand that its Google's SSID mapping thing, but i tried this ...
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647 views

Why MAC address changes after connection?

Recently I noticed that when I connect through wireless, my NIC change MAC address... Here's my ip addr BEFORE the connection: 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state ...
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Airbase-ng doesn't hide SSID nor change the MAC?

I'm trying to set up a beacon that sends a custom MAC address, with no ssid or other features. The command I'm using is; airbase-ng -A -a 02:47:4c:61:7a:75 --hidden -c 11 wlan1 My problem is that ...
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1answer
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How to bypass first octet restriction for wireless adapter mac addresses in windows 8.1

Windows 8.1 has a "feature" that restricts the values you can set the mac address on a wireless network adapter (note: this restriction does not apply to ethernet adapters), even if your network ...
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Reasons not to assume device MAC address is unique

In a scenario where you control the provisioning of the hardware and can determine that all devices with the same hardware model do indeed have unique MAC addresses for their networking interfaces, ...
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1answer
513 views

How to manually change your temporary IPv6 address in Mac OSX (Privacy Addressing)?

For those who are not familiar, OSX Sierra implemented IPv6 Privacy Addressing so that your temporary IPv6 address is no longer derived from your MAC address (reversely, this blocks your MAC address ...
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245 views

Docker cannot access DNS even with DNS options set, on university wired network

Running a (slightly modified) Ubuntu:16.04 docker image, cannot access DNS servers. This is evidenced by being able to ping a resolved ip address for google.com (such as 172.217.4.142, which was ...
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How to restore/revert back to original Mac address of my network adapter on windows?

For any reason, I changed my MAC address from network adapter properties>config>Advanced>Network Address. and set a value. It changed immediately after auto disconnecting and reconnecting. After ...
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2answers
764 views

Can MAC spoofing make DHCP run out of IP addresses?

I was reading this page, when I came across this warning: WARNING!: DHCP reservations generally rely on a MAC address to reserve a particular IP address assignment. If you randomize your MAC ...
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1answer
700 views

How to find MAC address in Ubuntu?

I am trying ifconfig | grep HWaddr it gives me output in two lines enp0s31f6 Link encap:Ethernet HWaddr d8:9q:26:7d:34:ff wlp1s0 Link encap:Ethernet HWaddr f8:71:38:53:e9:1p Which one ...
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1answer
635 views

What effect does cloning a mac address on web browsing?

I know that the ISP will see the cloned mac address coming from the router, but what are the ramifications? I was working on a computer that mysteriously was being black listed from several popular ...
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Adding a Second Switch to the First Switch to connect more Computers

I intend to have 3 PCs connected to Netgear GS108 Switch 2, which is connected to Switch 1 which is connected to the Internet. In the current setup that we have, access to the internet must be done ...
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1answer
3k views

No option for changing MAC address?

I have been trying to change my MAC address. I find the device in my control panel, I right-click and choose properties. I then click on the advanced tab. However, Network Address is not among the ...
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Get Mac address of the connected PC using android device via a USB connection?

I have an android device which is connected to a laptop via a usb connection.I need to get that laptop's mac address using an app which will be installed in the android device. Can you suggest any ...
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Why can't I access the Internet after I changed the MAC address back and forth?

I changed the MAC address on my computer to see how it works, using Technitium MAC changer. I browsed the Internet with this new MAC address. I then changed it back to the original. Now I cannot ...
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1answer
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Unknown Client appears in Wireless node in Router. Confused

I hope that I am addressing this question in the correct place. I have a bit of a conundrum ... At my home place I have a Router that is using the dd-wrt software. Only clients I use are a game ...
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1answer
410 views

How does DLC address relate to the MAC address?

The Network Engineering help seems to negate this question in their forum. A MAC address is hard coded, all 6 bytes, agreed? The DLC seems to be a variable address of 3 bytes in front of the OUI ...
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1answer
107 views

Packet sniffer in Network?

I found a blocked MAC address (00-1A-B6-00-64-00) in MAC access list and after disabling the MAC filtering show this detail in Wireshark : Frame 112389: 342 bytes on wire (2736 bits), 342 bytes ...
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1answer
3k views

What exactly are the specifications for a valid mac address?

I was playing around with the network address setting of my WiFi adapter and realized that having a hexadecimal number as mac was not the only condition to make it valid. To cut to the chase, 34:...
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1answer
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Network Physical address vs Virtual address

It's possible to generate a network physical address by a virtual machine such that when real and virtual machine are connected to the network, nobody in the network can determine which one is a ...
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1answer
648 views

How to add additional MAC addresses to wireless MAC address filter in ZTE modem?

The Wireless MAC Address Filter in my ZTE modem allows me to input only 8 MAC addresses. How to add more than these 8 addresses ? My ZTE modem is ZXV10 W300 Series.
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558 views

Hyper-V virtual network adapter's are assigned physical interface's mac

I am having trouble with hyper-V to force it to use the actual mac address of the virtual network adapter when packets from these virtual interfaces leave the physical network adapter, I've two ...
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1answer
1k views

MAC address in DHCP client list different from manufacturer's. Also, same device getting two different MAC addresses

here is my problem... I’m managing my local Wi-Fi network and I wanted to reserve some IP addresses to important devices, such as the local printer in my house. It’s a simple task. I only needed to ...
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get LAN adapter MAC address and save it to a text file

I have a 30 different computers in my office and i need to create a batch file, which would capture computer's LAN adapter MAC address and save it to a file. So far i have googled: @wmic nic where (...
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How switch will learn MAC in these situations?

So I know how switch learns MAC address. It sends packet through all(if needed) ports, while it get a answer from destination and marks it to that port. I have a few questions: Scenario 1: How will ...
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Why can't I change my Broadcom 802.11n wireless card properties?

I'm using Windows 7. Ethernet nic : Atheros AR8152 Fast Ethernet Wireless nic : Broadcom 802.11n Follwing this : http://www.howtogeek.com/192173/how-and-why-to-change-your-mac-address-on-windows-...
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1answer
2k views

D-Link router: Assign fixed IP address for given MAC address

This is a product specific question. I have a D-Link DWR-116 router which I bought recently to replace my failed netgear router On my netgear router I could set up a table that let me define a a MAC ...
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1answer
527 views

How can I connect two routers using WDS?

I have two wireless routers D-Link DIR-615 Wireless N 300 Router and JioFi 2, as the JioFi 2 don't have an expected coverage i was planning to extend the range, as i have an unused wireless router i ...
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298 views

How to change MAC address

I have lenovo laptop with integrated Ericsson H5321 Mobile Broadband device. I need to change its MAC address but it seems there is no program which could do that (Technitium TMAC, Lizard Systems ...