In order to get around an  someone suggested spoofing my network cards mac address.  How do I detect whether the wifi card supports mac address spoofing?  There is material out there on this, but it is very dated.  How do you do this on Ubuntu 17.10?  I ended up just running this:  sudo macchanger --mac 00:11:22:33:44:55 wlan0   Use iwconfig to detect the name of your wireless card.  Unfortunately this did not resolve the issue with Starbucks WIFI.
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My router can do port-forwarding based on MAC addresses. That is, a specific MAC will get a specific IP, for which I can configure a set of ports to be forwarded. In order to easily change that set of ports, I'd like to have different connections in the Network manager.  How do I change the MAC address for a network connection?
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Over the last 3-4 weeks I have been trying to find a rogue DHCP server on my network but have been stumped! It is offering IP Addresses that do not work with my network, so any device that needs a Dynamic Address is getting one from the Rogue DHCP and then that device stops working. I need help to find and destroy this thing! I think it might be a Trojan of some sort.  My Main Router is the only valid DHCP Server and is 192.168.0.1 which offers a range of 192.160.0.150-199, and I have this configured in my AD as Authorized. This ROGUE DHCP claims to be coming from 192.168.0.20 and offering an IP Address in the range of 10.255.255.* which is messing up EVERYTHING on my network unless I assign a static IP Address to it. 192.168.0.20 does not exist on my network.  My network is a single AD Server on Windows 2008R2, 3 other physical servers (1-2008R2 and 2 2012R2) about 4 Hypervisor VM's, 3 laptops and a Windows 7 box.  I can't ping the rogue 192.160.0.20 IP, and I can't see it in the ARP -A output, so I can't get its MAC address. I'm hoping that someone reading this post has come across this before.
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Possible Duplicate:          Can anybody see my MAC address when I'm on the Internet?   Also, where can I check my MAC address?
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I'm reposting  I asked on the  SE, bacause I have been redirected to Super User.  I have successfully set up two Linksys routers running DD-WRTv24 to do WDS. They have the same SSID, but different static local IP addresses. There is no security: it's just for testing; no Internet connection.   When I open my notebook, I see the SSID shared by the routers in the list of WiFi access points, and I can connect to it. Once connected, I can ping both routers' local IP addresses, so I know that the WDS is working. But I can't find a way to find out which of them I have actually connected to.  I wouldn't like to have different SSIDs, because I plan to have the access points hand-off users to one another, and I want it to be transparent for the users. I configured one AP to distribute DHCP IP addresses in one range, and the other in another range, so I can discover which AP I connected to at first, but I want a way to discover which AP I'm connected to now, so that I can find out whether the hand-off actually occurred.
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I've just decided to jump into the world of Ubuntu, so far I encountered no problems until I tried to connect to my wireless network. I'm running Ubuntu on my laptop, Acer Aspire 5333-2880, which has an Acer Nplify 802.11b/g/n wireless card.  After browsing for an answer, I think the problem is a missing driver. input:   lspci | grep Network   output:     02:00.0 Network controller; Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)   I found a couple of answers that might be right, but I have problems with both of them.    It requires me to load the site in my laptop, but I can't do it without internet and I have no idea how to save this into a USB.  But I have no idea how to really run or use this, and I wouldn't like to screw it up.    Any advice or other possible solutions will be greatly appreciated!   EDIT.  Thanks a lot for your input Marko and Jorge. I am sure the problem was with one of the drivers, but I was too distracted, or tired yesterday to realize I didn't restart my computer after installing. As soon as I got turned on my computer again, it was working. Annoyingly, I am not sure what the problem was exactly nor what exactly fixed it.  But still, thanks a lot Marko for the intel on how to build packages, I am sure it will be very useful later on!
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Is there a way on OSX or with a 3rd party software to use both a Wi-fi and an ethernet connection, thus having the sum of the connection speeds?  Or maybe making some applications connect to one connection and other apps connect to the other?    P.S. I don't want to bridge one connection over the other. P.P.S. Both are different connections with two different ISPs and both are paid for, there's no wifi stealing if you might ask.
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QUESTION:  How might I be able to specifically change the Mac Address of the enp3s0 and wlp2s0 interfaces through the /etc/network/interfaces file? What code would I have to include inside? I have been trying for some time now without success sadly enough.    ELABORATING:  So I found this great article online explaining how to change a Mac Address permanently through the /etc/network/interfaces file on my Ubuntu.  In the article, it says:      On Debian, Ubuntu, and similar systems, place the following in the   appropriate section of /etc/network/interfaces (within an iface   stanza, e.g., right after the gateway line) so that the MAC address is   set when the network device is started:      hwaddress ether 02:01:02:03:04:08   Source:  -WikiBooks  Now when I use the following code:  cat /etc/network/interfaces   I get the following output  # interfaces(5) file used by ifup(8) and ifdown(8) auto lo iface lo inet loopback   And when I do ifconfig on my ubuntu, I get back 3 different interfaces:   enp3s0 lo wlp2s0   I would like to change the mac address of all of my interfaces (enp3s0, wlp2s0) (lo is loopback so no need there), but I am unfamiliar with the commands in the /etc/network/interfaces file. I have been looking at tutorials online though I can't seem to get stuff right, and my computer even started acting very strangely a few times afterwards.
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Is it possible in dhcpd.conf to ignore requests from a set of MAC addresses?  Something like this:  host vminstances {     hardware ethernet d0:0d:*;     ignore booting; }
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To start off I am very new to Ubuntu so when explaining do not use shortcuts please because I will not understand. So I installed Ubuntu 15.10 on my Hp Envy and the wireless card is not working. I have been hassling with it all day and I'm finally giving in to making a forum post. The Card is a Intel 7265 Wireless AC(revision61). I am currently attempting to install a newer firmware for it that I downloaded from intels website but I can not for the life of me figure out how to get the file into the firmware folder. So basically I'm making a plea to help me get the firmware installed and if that doesn't work provide more insight before I say goodbye to Ubuntu. Thanks in advance!  lspci -knn | grep Net -A2 02:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] (rev 61)     Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5010]     Kernel driver in use: iwlwifi  Rfkill List 0: acer-wireless: Wireless LAN     Soft blocked: yes     Hard blocked: no 1: hci0: Bluetooth     Soft blocked: yes     Hard blocked: no 2: phy0: Wireless LAN     Soft blocked: no     Hard blocked: no  dmesg | grep iwlwifi  [    2.089673] iwlwifi 0000:02:00.0: Unsupported splx structure [    2.092497] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-15.ucode failed with error -2 [    2.093049] iwlwifi 0000:02:00.0: Direct firmware load for iwlwifi-7265D-14.ucode failed with error -2 [    2.113852] iwlwifi 0000:02:00.0: loaded firmware version 25.30.13.0 op_mode iwlmvm [    2.148273] iwlwifi 0000:02:00.0: Detected Intel(R) Dual Band Wireless AC 7265, REV=0x210 [    2.149810] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled [    2.150242] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled [    2.240713] iwlwifi 0000:02:00.0 wlp2s0: renamed from wlan0 [   14.008741] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled [   14.009388] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled [   14.070823] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled [   14.071356] iwlwifi 0000:02:00.0: L1 Enabled - LTR Enabled   After sudo modprobe -r acer_wmi  rfkill list 1: hci0: Bluetooth     Soft blocked: no     Hard blocked: no 2: phy0: Wireless LAN     Soft blocked: no     Hard blocked: no
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I'm trying to connect my desktop (running 64-bit Ubuntu 12.04) to an Airport Extreme Base Station by using an ASUS USB-N13 wireless adapter.  I plugged it in, turned on the desktop, and the adapter was immediately recognized by the system. I found my home network listed in the available networks, typed my password (with the correct encryption) and hit connect. After that, the wireless icon just flashes (propagates? emits?) indefinitely, and every couple of minutes the "Wireless Authentication Required" box pops back up.   I don't know what to do. I've seen some solutions talking about an "rt2xxx" or "rt3xxx" driver or chipset. I don't know exactly what it is, but when I typed lsmod | grep rt I got:  parport_pc rtl8192cu rtl8192c_common rtlwifi mac80211 cfg80211 parport   I'm pretty much lost. Please AskUbuntu, what do?
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I need a cross platform method of determining the MAC address of a computer at run time.  For windows the 'wmi' module can be used and the only method under Linux I could find was to run ifconfig and run a regex across its output.  I don't like using a package that only works on one OS, and parsing the output of another program doesn't seem very elegant not to mention error prone.   Does anyone know a cross platform method (windows and linux) method to get the MAC address?    If not, does anyone know any more elegant methods then those I listed above?
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I'm trying to install wifi drivers for a particular mini wifi card i bought. The output of lsusb is:  0bda:f179 Realtek Semiconductor Corp   I've searched everywhere for drivers, but could not find anything. Any help?  Thanks
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I have a network wired connected heatpump with a static IP address on my LAN, my son's Nintendo Switch has an identical MAC address. Even though it connects via Wi-Fi from an access point, it refuses to connect to the internet. I can get it to see the local network and it appears briefly in the access point log but will not connect out to the internet. It would seem impossible to alter either bit of kit's MAC address.   Any ideas how I can get them working?    I have turned off MAC filtering but all that achieved was enabling the Switch to connect to the network, it could not make the next step to the internet.  Update: The MAC in question is 98:e8:fa:53:c1:01 and is the same on both the Nintendo Switch and the Nibe Heat pump. I keep all my permanent devices locked on static IP addresses (from a reserved list) and hardwired back to the router, there is a uplink to my wireless Access point (Ubiquiti) which then serves both main and guest WiFi networks with its own DHCP server function using a specified range not used anywhere else on my networks. I had thought that giving the switch its own static IP address might work but although it appears in the WiFi log it refuses to connect and it looks like the MAC id takes precedence over the static IP address I assigned it.   @Tonny, the VLAN option might work as the Ubiquiti has this capability, although I have never explored it before - so will give that a try, wish me luck. Otherwise I agree with you about changing the NSwitch although it is over three months since we got it (this Christmas was the first time we tried the internet connected aspect of it) so Currys may not play ball. (Sorry for the duplication of the question but the original was not showing up on my account and was very hard to search for every time.)
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I was shocked to just find that the Wi-Fi process on my brand new macbook pro is sucking up 3.4 GB of memory. Why is that and how do I reclaim it? I reviewed a few other questions here about this but they don't have helpful answers.  Running Mojave 10.14.5 (18F203)      That 11282 ports looks suspicious. I'd like my memory back, appreciate your suggestions.  Edit: here is the memory pressure graph:    Uptime 3 days and have been using wifi hotspot a lot (while I wait here for AT&amp;T home internet install...)
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I have a Macbook running Mac OS X, and I have Ubuntu running in VirtualBox.  I am using a public WiFi network on my Macbook, but for some reason my Ubuntu virtual machine won't detect it.  It was able to detect public WiFi networks before, but now it can't.  The network just isn't showing up in the network menu.  How can I fix this problem?
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Again and again I read that devices are uniquely identified by their MAC addresses. But how are MAC addresses determined? (And do they tell us anything about the device which they represent?)
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I have a local network in a Windows system where the Admin gives permission to the PCs by their MAC address. But he is on vacations and I have a new PC.  How can I change the MAC address of my new PC to have the same MAC address as the old one?  I know this can be used for spoofing the address, but this is local, so I don't think I will have a problem.