- #How to find mac address on linux how to
- #How to find mac address on linux drivers
- #How to find mac address on linux driver
- #How to find mac address on linux android
- #How to find mac address on linux software
Based on MAC addresses, user authentication can be performed when connecting through the Captive Portal. This is a very real problem, for example, using iSniff-GPS, you can track the previous geographic locations of devices.īut there is a more important reason (than paranoia) to learn about MAC addresses and about ways to spoof or prohibit changes in your system. So, in short, the spoofing of the MAC address is needed so that it is not possible to track and identify the device by its MAC address. is replaced with a fake one, and new MAC addresses are constantly generated for the same device.
#How to find mac address on linux android
But the problem, apparently, is important, since in the new Android and iOS firmware, the MAC address is constantly spoofed, i.e. It is understandable for a hacker to want to hide his MAC address – to prevent the possibility of proving his identity with the person who carried out the attack, but why would ordinary users hide (spoof) their true MAC? For me personally, the answer to this question is not obvious. Moreover, the MAC address (also called the hardware, physical address) does not change when the operating system is changed (reinstalled, for example) – it is burned into the network interface. And since this network device is part of your computer, it allows you to uniquely identify your computer. So, since the MAC address must be unique, it allows you to uniquely identify the network device. By the way, a router or a switch has a unique MAC address for each port, if the device supports wireless networks, then each wireless interface (2.4 GHz and 5 GHz) also has its own MAC address. That is, when we talk about “changing the MAC address”, then you need to understand that there are several of these addresses. With desktop computers, the situation is usually the same. For example, laptops have at least two network interfaces: wired and Wi-Fi – each of them has a MAC address. By the way, if a device has several network interfaces, then each of them has its own MAC address. The MAC address is (must be) unique for each network interface.
#How to find mac address on linux how to
In this article, we will look at how to change (spoof) the MAC address on your Linux computer, as well as how to disable automatic spoofing of the MAC address. No further access to those hardware registers is made.About what a MAC address is and how to view it has already been discussed in the article “ How to find the MAC address and How to find the manufacturer by MAC address”. As far as I can see, it supports no method of actually asking "what is your PROM ethernet address" - the MAC address is read out during the "probe1" section of the module initialization, and stored away.
#How to find mac address on linux drivers
I had a quick look at the pcnet32.c drivers (because it's one of the models of network card that I have a rough idea how it works and where the different registers are, etc, so I can see what it does).
#How to find mac address on linux software
Of course, there are cases where there isn't a hardware network card for that particular interface - virtual network drivers for virtualization and when using bridges and software switches for example.Īnd of course, the hardware may be such that you can't actually read the "original" MAC address when it has been overwritten by software, because there is only one set of registers for the MAC address itself.
#How to find mac address on linux driver
The only way to find the original MAC address is to use the same method the network card driver does - unfortunately, I don't believe there is a generic way to tell the driver to provide it's MAC address "as provided by the hardware". Memcpy(mac, ifr.ifr_hwaddr.sa_data, IFHWADDRLEN) #include /* for the glibc version number */ ** below code gives my current MAC but not original MAC #include /* Standard I/O */ but don't know how to do this in above case. Is there any utility for it or command for it? how do I find the original? There must be a way to find it, because it is still burned permanently into the card, but I can't find a tool to read the burned in address. 'ifconfig eth0 hw ether uu:vv:ww:yy:xx:zz',or I set "permanent" it using vi /etc/sysconfig/network-scripts/ifcfg-eth0.this file.I can successfully UP it in REBOOT also. I understand how to find the current MAC address using ifconfig, but if the address has been changed, say by using I'm trying to figure out how to find the original MAC address of an ethernet NIC on my linux box. Is this possible to read MAC address form NIC directly ? I have below code but it just read from above layer but not the card itself !!! Os:REDHAT LINUX Linux manage: 2.6.18.8-1 #
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