When using mobile phone connectivity, such as 3G or GSM, the identifier of your SIM card (IMSI) and the serial number of your phone (IMEI) are always revealed to the mobile phone operator.Usually, a network interface comes with a fixed MAC address called the burned-in address. They are used to identify devices on a physical network.While using Wi-Fi, anybody within range of your Wi-Fi interface can see your MAC address, even without being connected to the same Wi-Fi access point. Your first set of logs show ip spoofing, meaning a device tries to enter the user table with an ip address that is already in there.MAC addresses are a unique identifier associated to every network interface, wired or wireless. Every NIC has a MAC address hard coded in its circuit by the manufacturer.Hidden page that shows all messages in a thread. It has a very simple user interface and provides ample information regarding each NIC in the machine. Technitium MAC Address Changer allows you to change (spoof) Media Access Control (MAC) Address of your Network Interface Card (NIC) instantly.It can be used for some legitimate and not-always-legitimate purposes: It doesn't change the burned-in address, it merely changes what other devices think your interface's MAC address is. The valid users that end up repeating the Xfinity wifi login process will then have, unbeknownst to them, secretly added new MAC addresses to their list of allowed devices (under their Xfinity account/s).MAC spoofing is the technique to effectively change the MAC address that your network interface appears to have. This has some some pretty useful applications, such as being used as the matching criterion for a DHCP server to give a static IP address to a given device, or in order to target a "dormant" interface as required for Wake-on-LAN.In that case, just have the malicious access point do some MAC address translation instead. Because of their fixed nature, they make it pretty easy to use for tracking purposes.(Hey, remember those "time-limited" free WiFi access points at the airport?) Appearing as a different device to a network you've previously been on. Think they would never do that? Think again. For example, Starbucks may wish to maintain a list of all MAC addresses accessing their WiFi access points and use this information to figure out someone's movements or simply to identify who their best customer is (or at least which one is that guy always hogging all the bandwidth). Avoiding tracking: Different MAC addresses means no device on the network can tell if it has already seen this device on this network before, or on another network.
Spoof For Wifi Access Serial Number OfOr, more mundanely, perhaps you don't want a thief to be able to see that you have a shiny, new, and very expensive iThingy at your house simply by standing outside and looking all the MAC addresses broadcasted by all your WiFi devices. Sometimes that's not important, but perhaps a hardware exploit exists in all network interfaces manufactured by $MANUFACTURER, thus changing your MAC address gives you a bit of security by obscurity. Thus, the burned-in address gives away which company made the chip. What is the best software to downlad mac games for freeThe consequence of this scheme is that any website you connect to can figure out your MAC address from nothing but your IPv6 address. One of IPv6's addressing models, stateless address autoconfiguration, allows a device to acquire an address for itself by taking the 64-bit prefix of the network it is on, and using the 48-bit MAC address of its network interface to determine the value of the remaining 64 bits. This way, even if your guests don't practice healthy security practices on their computing devices, at least they won't spread any nasty stuff through your LAN.Interestingly, while MAC addresses have thus far been limited in terms of tracking potential due to being confined to one's local network, this is about to change with IPv6. This is a good thing, as it gives you some network-level isolation between machines. Recent routers often have this "guest network" feature which, when turned on, makes your router show up twice in the list of available access points: The regular network, and the guest network. Wireless access points use MAC spoofing in order to provide multiple wireless networks with a single wireless interface. This guide uses the output from the Debian version. On Arch, that package is known on the AUR as macchanger-debian. Some distributions have a different package for the Debian version of macchanger, which includes some pretty important fixes such as an updated list of manufacturers, more granularity in the time value used for the random number generator's seed. So how do we get in on the action?To randomize MAC addresses, we will be using an aptly-named program called GNU MAC Changer, available on most distributions under the macchanger package. There are various ways to figure this out ( ifconfig, ip, airmon-ng, tab-completion on some commands, etc.). Thus, we should check out our list of network interfaces. Step 1: Preliminary data gatheringIn order to spoof a network interface's MAC address, we first need to know which interface we should spoof the MAC address of. Its current MAC address, which should currently correspond to your burned-in address, is shown on the second line (" link/ether xx:xx:xx:xx:xx:xx") You probably do want to spoof the MAC address on this one. eth0 is the actual Ethernet network interface of the machine (hence " eth"). This interface has the MAC address 00:00:00:00:00:00 because it is not a real network interface. It is used for internal traffic, such as when you run a "local web application" which is simply a process that binds to localhost:someport and lets you connect to it through your browser. You probably do want to spoof its MAC address: since it's a wireless interface, it will likely travel a lot and connect to a variety of access points, so it is the type of interface that would benefit the most from MAC spoofing.Other types of interfaces can appear, such as athX (Atheros chips), vboxnetX (virtual network interfaces created by VirtualBox), etc. It shows as a physical network interface with its own MAC address. wlan0 is a USB WiFi adapter plugged into the computer. As it is not a physical network interface, it doesn't have a MAC address. And while we're at it, let's not call a wireless interface ethX. This can be fixed by renaming interfaces so that their name stays consistent. Inconsistently assign interface names (one boot you have eth0 being the Ethernet interface and eth1 being the wireless interface, the next boot you have eth0 being the wireless interface and eth1 being the Ethernet interface)This is not only annoying, it also means that if you decide to use MAC spoofing for one of the two interfaces, you may actually be spoofing the MAC address of the wrong interface. Assign a name like ethX to the wireless network interface It may prove interesting and/or useful anyway.Some Broadcom drivers have the very annoying tendency to: If not, feel free to read it or not. For that, it uses the first 3 bytes of the MAC address, which are attributed to a given organization. Macchanger said it was "unknown", whereas it could determine which manufacturer the original MAC address belonged to. But wait! That address is weird. Thus, a lot of the time, your device will appear to have a MAC address from uncommon manufacturers, by which a human may still deduce that you are spoofing your MAC address. You can try running the above commands multiple times to cycle through manufacturers and you'll mostly see Chinese companies you've rarely heard of.
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