Questions tagged [mac-address]

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

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How to know MAC address of wifi router?

On my wifi router box the printed MAC address is c4:a3:xx:xx:xx:d0 when i check the mac address sometime i get different mac address c4:a3:xx:xx:xx:dc and sometime i get c4:a3:xx:xx:xx:d2 i.e. the ...
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Remote access to smartphone from PC by knowing IP and MAC

I'm wondering if it's possible to transfer files from my smartphone (Android 9) to my PC (Ubuntu or Windows) without installing any app on the smartphone and without touching it. I'd like to perform ...
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Can you change a mac address on a Chromebook using Linux beta? (mac spoofing)

I know there's a way to change your MAC address temporarily however I can't be bothered having to go to the store to buy a USB to back up my files so I can go into developer mode. So I was wondering, ...
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Automate VPN startup in Kali Linux

I am new in Kali linux, I want to automate my hourly work :D, change my MAC and IP address after rebooting my PC. I done Mac well, the bad news is about VPN. That's my code in 'Bash' after rebooting, ...
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No internet connection on Kali Linux VirtualBox after changing MAC adress with macchanger or ifconfig command

i just started learning Kali Linux as part of Ethical Hacking step by step program. After installing VirtualBox and Kali on it as VM , one of the steps was learning how to 'spoof' your MAC adress .. ...
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While using phones hotspot , should the wifi mac address same as the dhcp mac address?

I have my laptop connected to internet through my mobile phone's hotspot . Now on doing ipconfig /all in cmd , it shows the same address for DHCP and DNS servers (supposedly my phone is expected to ...
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83 views

MAC address in TCP Header - HTTP Request?

In the same below, why are there MAC addresses in the respected request packets? Why and how did the client obtain the destination MAC address? At first I thought it was the router, but can this ...
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Notepad ++ extract MAC addresses from text

How to extract MAC addresses from text to get a list where each line is one MAC adress only? I try to mark MAC addresses with regex, bookmark lines and delete unmarked lines but there is still too ...
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65 views

Is it possible view the MAC address from the hard drive one an old computer?

I need to see the MAC address on a system from an old computer. I tried a lot of things in Event Viewer and also in the Regedit but I can’t seem to find it. Is there any way to do this? Is this even ...
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No internet when I change my router

I have a PPPoE DSL connection. I have one router and it connects to ISP and I have internet access. But when I change it with any other router and try to connect it using using the ISP given ...
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51 views

ARP IP addresses. Am I in trouble somehow?

I recently got a message from Norton Antivirus: New network detected and saved which confused me. I found out that I can check that with arp -a so I did. I noticed about 100 different IP addresses. Is ...
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Is there any reason other than blacklisting that my device will only connect to wifi under a spoofed MAC address?

I suspect that my roommate has been blacklisting certain MAC addresses from accessing our wifi. Yesterday, I spoofed the MAC address on a device that could not connect, and now it has no problem ...
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Viewing router traffic by MAC address using DD-WRT

Using TP-Link router and their firmware it is possible to view the total and current traffic by MAC address: I have recently changed TP-Link firmware with DD-WRT (router model TP-Link TL-WR841ND v11)....
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Block connection to Wifi network by MAC address, not by SSID

The only questions similar to this I've seen related to routers, and I want to accomplish this just on my wireless card, an Intel Dual-Band 8260. I get internet through a wifi hotspot, (xfinity ...
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How to find an ip address if we have the mac address

I have my friend's mac address how can I get his IP address? Is there any command which will take mac address and give us an IP-address?
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MAC Address Spoofing causes VM Machine to lose physical connection?

I currently paid for a Network Testing/Python coding course online and one of the first programs we created was a MAC address changer. When I change the MAC address of my Virtual Machine it cuts out ...
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How to change Raspberry Pi's MAC address while connected over SSH?

I have a Raspberry Pi 4B connected over SSH (Putty with Xming server), I wanted to change the MAC address but each time when I enter the command 'sudo ipconfig eth0 down', my SSH session will get ...
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63 views

How to scan a network for MAC addresses?

From my router (running OpenBSD) I can do: arp-scan --interface=em1 --localnet And get a list of all IP addresses and corresponding MAC addresses on my network. But is it possible to scan for a ...
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133 views

MAC/IP/Port Filtering

im trying to filter mac addresses on a ZTE gateway for my streaming business. I need to allow only specific devices that join the network to have internet access but id like to allow all devices to ...
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Is it possible to get MAC address of a website?

I work on windows and was trying some network commands on CMD. I came across MAC addresses and was wondering if it is possible to get the MAC address of a website. I tried nslookup but it gave me the ...
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how to access and configure wifi repeater

My 5G signal does not penetrate through the whole house, so I figured I buy a WiFi repeater. This is installed and seems to work. However once I set up the WiFi inside the repeater it restarts and ...
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How to use MAC Ids/OUIs/Company IDs in order to find the type of Bluetooth devices used?

While reading about COVID trackers and Exposure Notification System(ENS) built by Google and Apple, i came to know that they use Bluetooth and not GPS for contact tracing which allows the applications ...
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I don't recognize this HW address format

I'm looking at the contents of /proc/net/arp from a google wifi onhub's diagnostic report and the format of the HW address is confusing because it's missing a character and ends with an asterix. Does ...
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How to make Hyper-V not change the MAC of the default switch on every boot

Hyper-V changes the MAC-Address of its "vEthernet (Default Switch)" on every Windows boot. I can manually set it back in the "Hyper-V Virtual Ethernet Adapter Properties" under ...
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656 views

How does a network device update its MAC table?

When a network device updates its MAC table, what protocol is being called? I am pretty sure it is ARP, but correct me if I am wrong! What messages are being sent and from whom, what information is ...
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How to fix duplicate MAC Addresses on Ethernet?

For some reason, whenever I connect to ethernet on my Chromebook and my Macbook, the MAC Address is the exact same. As expected, this renders the ethernet unusable for both computers, but at least ...
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How safe it is to give my phone's MAC address? [closed]

I work at ISP company. They asked all of the employees to reveal the MAC addresses of their smart phones and the android/iPhone version. They told us that they collect data for a new project that they ...
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156 views

Same SSID different APs and MAC address filtering

I have one router and one Wi-Fi extender. The extender is only used to convert Wi-Fi to Ethernet to my desktop PC. Therefore I don't need the Wi-Fi signal from the extender, but the extender does not ...
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Routing/Mac Address issue on VPN

I am trying to get a computer to run some software from a remote location. In order for the software to run it has to be listed in the license manager of this software with an IP address and Mac ...
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642 views

Multiple MAC addresses for the same device?

My BT Broadband router is showing up a different MAC address for two of my devices as shown below. Is this normal? LAPTOP MAC address shown by BT Hub: 02:0F:B5:BA:A0:87 MAC address shown in Command ...
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52 views

MAC Address Resetting Upon Restart

I'm trying to spoof my WiFi adapter's MAC address on Windows 10. Previously, I was able to do this by simply changing the NetworkAddress field in Computer\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\...
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245 views

How to add 2 individual MAC addresses along with port-security sticky command?

I am designing my new company building network with Cisco 2960x and 3850ss switches and I want to use port-security for security reasons. I know how to configure 3 types of sticking MAC addresses to a ...
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Much Lower speeds on Laptop Ethernet than on WiFi

I have a new Laptop, about 6 months old (MSI GL63 9SD) . Up until now, I have always used to the WiFi to connect to the Internet, but now my router has died, I am replacing it with a new one, and ...
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How will EUI-64 handle MAC Address collision?

IP Address generation in IPv6 uses EUI-64, a technique that basically uses the MAC address to calculate the host part of the address. This seems fine as long as it is used for the link local address ...
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157 views

Internet Connection Turns off while changing mac address on Kali Linux 2020.2

ifconfig eth0 down ifconfig eth0 hw ether 00:11:22:33:44:55 ifconfig eth0 up service network-manager restart ping www.google.com While changing my mac address on Kali Linux 2020.2 with this ifconfig ...
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Changing mac address to a different “universal” one

My laptop wifi adapter (DW1501 Wireless-N WLAN Half-Mini Card) allows me to set a "Locally Administered MAC Address", but only if the locally administered bit is set in the custom mac ...
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WiFi Hotspot Disable Neighbor discovery

I am using WiFi hotspot feature of Ubuntu 18.04 to create a hotspot for my devices. I need to prevent different devices on the network from contacting each other. More specifically, I have two phones ...
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41 views

rhel + Device xxxx has different MAC address than expected

in messages file we have the following error ERROR : [/etc/sysconfig/network-scripts/ifup-eth] Device papa2 has different MAC address than expected, ignoring. is it minor alert , and we should ...
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93 views

Can an ISP lock your Cable Model MAC?

I was with Spectrum for few years. Recently, I moved to a new location where Spectrum does not have service, so I had to move my cable modem (which I bought, not rented), an Arris Surfboard SB6183, ...
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Who does this IP belong to, possible spoofing attack?

I am currently using a TalkTalk router to access my home network. I've had issues previously with my connection being either slow or cutting out fully (not a common issue). I download XARP ...
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55 views

Network not working after changing MAC

I changed MAC address of my virtual computer with OS Ubuntu. (ifconfig enp0s3 hw ether 12:23:34:45:56:67) After that I was no more able to communicate with any network devices. Is there anything I ...
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48 views

I have been port scanned repeatedly by an address in the Netherlands - I can only block by MAC address - how can I find it?

I can only block inbound traffic by MAC address. How can I find the MAC address for a computer in the Netherlands. 185.202.1.161 is the bad guy
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How can I permanently change the mac address on a Linux 3.3.8 device without macchanger?

I'm trying to permanently modify my MAC address on a device running Linux 3.3.8 I cannot get macchanger to install either. When I try it with ifconfig eth0 hw ether [MAC_ADDRESS] I get ifconfig: ...
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DHCP Client List include different IPs for the same MAC. Is it a bug?

Previously I tried to ask this on Network Engineering but they closed as off-topic. I relied on this meta topic when posting there. I have an issue with Netis N4 Wireless Router which looks like a ...
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116 views

What is my LAN card's MAC address?

EDIT: I meant wifi card, not LAN card. I want to connect wifi devices (printer, phone, etc) to my Windows 10 laptop. I want to used a reserved DHCP address on my router for the wifi card (not LAN ...
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863 views

Is the MAC address of the TAP-Windows adapter visible to the network?

When using the TAP-Windows adapter v9, such as when connecting with the OpenVPN GUI, does a router see the MAC address of the hardware Wi-Fi network card and the TAP adapter or just the Wi-Fi network ...
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How to know the device type using MAC address?

I would like to know what these devices are. Is there any easy way to tell by the MAC addresses listed? In particular the device with the address 88:6B:0F:5A:5D:18.
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Is it possible to have “on the fly” MAC spoofing with IPv6 for encryption/anonymization purposes?

I am in school for network security and advanced Cisco, and one of my classes this semester we picked up on IPv6 as part of the MS Server 70-741 Exam. When reading through the textbook and noticing ...
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Docker network equivalent of virtual machine bridged network mode

I want to deploy a Docker container within a network that appears accessible with its own link layer device / MAC address, the equivalent of a virtual machine with a bridged mode network adapter. In ...
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2k views

How to change MAC Address on windows 10 without third party software?

I have a Surface Pro 7 Model 1866 i5 and was wondering how I could change the MAC Address. I can view the MAC Address using the getmac and ipconfig /all commands in powershell and cmd to view my MAC ...

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