A MAC address is a level 2 unique identifier for network adapters or network interface cards. A common practice in circumvention of network security is mac spoofing. Because of this, the use of MAC addresses to secure a network has been deprecated. This is not to be confused with the tag mac, ...
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NAT on MAC-filtered network
My ISP (Hyperion S.A.) provides internet using a UTP cable with MAC filtering. I'm trying to set up a router so that I can connect multiple computers to the network. Most computers would connect ...
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1answer
54 views
MAC address of default gateway spoofed
I am currently living in an apartment with a shared internet connection. All rooms in the building are connected to a switch, which is hooked up to some fiber connection.
Now, someone was wise enough ...
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2answers
39 views
What does `ec` mean in `HWaddr ec`?
When I do ifconfig on my laptop I get HWaddr ec and than an address, this is next to eth0. Note that my IPv4 address only appears next to eth1 so I assume my laptop uses the eth1 network interface.
I ...
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1answer
65 views
What does `Type: IP (0x0800)` in the Ethernet II part of a ping packet mean?
If I ping to another pc in my network I send a packet that consists out of an ICMP part, a IPv4 part and a Ethernet II part. I can see this using the packet analyser 'wireshark'.
Now the Ethernet II ...
2
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3answers
144 views
Is it possible to recognise hardware (router or network card) just by its MAC address?
Just wondering if that is possible. Are there any naming conventions that would allow one to deduce whether the MAC address belongs to a router (of a specific brand), or a network card, etc..
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6answers
619 views
How can I get the MAC address from my stolen laptop so the police can trace it?
A week ago my HP Mini 110 was stolen. I reported to the police and they asked me about my Laptop's MAC address, which I don't know or had never heard about before.
Is there any way to get the MAC ...
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2answers
127 views
How to bypass MAC address filters
I have a program that gets my MAC address, and it won't work with the real one; I need to clone it. The problem is that if i try to spoof it from regedit, the software will recognize it. I cannot use ...
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0answers
221 views
Internet Connection Sharing bypassing MAC Filter in Ubuntu Linux
My university gives me an internet connection by Ethernet, DHCP but they have installed MAC Filtering to allow only using my PC.
I have a wireless router TL-WR340GD. which has MAC address cloning ...
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0answers
98 views
Recently purchased Comcast Cable Internet. Need advice about Mac Address Cloning
I have already successfully cloned the MAC address of the computer that was first hooked up when the Comcast modem was installed. This enabled 2 out of 3 computers on the network to get Internet ...
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2answers
199 views
What's the MAC Address of my Ethernet adapter?
I have purchased a Dell Inspiron N5010 (with Windows 7). It works all fine but I need to know the MAC Address of the Ethernet adapter.
I have tried IPconfig /all, but it does not show my Ethernet ...
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1answer
141 views
How do I get my original MAC address?
I am using Windows 7 Home Basic. My laptop's MAC address was changed by a hardware support person to facilitate my Internet connection.
How can I get my original MAC address.
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2answers
84 views
Blocking or Disabling Rogue Routers
We have a medium sized network and from time to time something bad happens. Once it was a router configured to assign IPs via DHCP that did not match our network mask, thus making all clients unable ...
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1answer
51 views
How do I find the MAC address in Mac OS 9?
I've never used a Mac in my life – now I have to find out the MAC address of Mac OS 9. I can't even find terminal or console there.
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1answer
546 views
Create a virtual network interface using the iproute2 “ip link” command with a spoofed MAC address
How can I create a virtual interface similar to the following ifconfig command?
$ sudo ifconfig eth1 hw ether 00:01:02:aa:bb:cc
SIOCSIFHWADDR: No such device
This does not work. I want to set ...
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1answer
154 views
why do I get a different MAC address using arp and ifconfig?
# ifconfig
eth1 Link encap:Ethernet HWaddr 00:1e:8c:10:xx:xx
# arp
Address HWtype HWaddress Flags Mask Iface
192.xxx.x.x ether ...
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1answer
286 views
MAC address spoofing in Windows 7 - 00 as first two digits?
I've followed this guide on MAC address spoofing.
I'm trying to change the MAC address for my wireless adapter. I seem to be able to change it when doing the registry edit, but only if the second ...
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1answer
427 views
How can I determine the MAC address for a NIC in CentOS without using ifconfig?
CentOS 5.5
One of my CenTOS systems recently booted with the following error:
"Bringing up interface eth0: Device eth0 has difference MAC address than expected. ignoring."
When I run ifconfig -a ...
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3answers
554 views
Finding router's WAN/External MAC address
I want to find my router's WAN MAC address.
On the WEB UI, WAN MAC is hidden.
SSH / Telnet is not available (password protected) on router.
There is no labels/engravings on physical unit which ...
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1answer
205 views
MAC address based VLAN: How to get the MAC address of a newly attached device?
I am in a network that determines by the MAC address of attached devices to which VLAN the used switch port has to be set to.
For regular devices that use DHCP the MAC address can be simply ...
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2answers
1k views
Changed MAC address of Wireless card being ignored?
I am attempting to spoof a MAC address on my wireless card (Intel(R) Centrino(R) Advanced-N 6205) in Windows 7.
Since the Driver Properties dialog doesn't have an option to change the address, I've ...
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1answer
562 views
Can I change the MAC Address on my Airport Extreme WiFi Router?
I am trying to do some diagnostics on my Time Warner Wideband Internet connection. To do so I would like to spoof the MAC Address on my AirPort Extreme WiFi Router.
I cannot find a way to alter the ...
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0answers
328 views
Another user in my network is using my IP and MAC address - what can I do?
These days I had problem with my internet connection.
I have a static IP connection, but some time ago I couldn't access the internet. A friend helped me and we found out that the IP and MAC-address ...
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3answers
304 views
Theory regarding MAC and IP address in network packet and frame content?
Okay, network theory and protocol questions for you guys:
Assuming a router is using NAT, is a device's MAC address every actually exposed to the Internet? Or, does the router transmogrify (wow, ...
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2answers
88 views
Using MAC address prefix AB:CD:EF
I'm trying to use tcprewrite to change the source MAC address of some packets. I deliberately chose the prefix AB:CD:EF that does not belong to any hardware manufacturer so that I can distinguish such ...
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1answer
118 views
Restrict users with regard to their MAC addresses. Is it possible with Squid?
I need to restrict the users with regard to their MAC addresses. Is it possible with Squid?
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3answers
97 views
Why do unicast packets not intended to me reach my NIC when I'm in promiscous mode?
When I'm connected to a switch, the switch knows which mac address belongs to which port. So even when I'm in promiscous mode, why do I receive unicast packets that are addressed to different mac ...
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0answers
143 views
How do i get te ARP table / mac address list from an airport express via command line?
We have an airport express at our office..
I'd like to be able to get the mac address list from the command line on my mac.
How would i go about this?
2
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1answer
187 views
MAC Address Convention
I need help understanding MAC address convention as described here. If I understand it correctly, then MAC address 00-27-C7-38-42-11:
Has 00 as the most significant byte.
Has 0 (zero) set in its ...
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1answer
181 views
no internet in browsers after cloning computer's MAC address to router
Looks like my ISP has a MAC address filter on their end, hence newly installed wifi router was being blocked until I did a MAC address clone from PC to router using in-built function in the router's ...
2
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2answers
1k views
A Utility to Spoof MAC addresses in OS X?
Is there a menu bar style tool, or maybe a GUI program that would allow me to switch / spoof MAC addresses for the Airport / WiFi connection on OS X?
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2answers
97 views
Is modifying our MAC Address a perfectly reversible operation?
Ok guys I've just read this page: http://www.irongeek.com/i.php?page=security/changemac
But before I want to attempt anything, I want to ask: Is modifying our MAC Address (in the way provided at that ...
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2answers
105 views
Using a laptop with multiple static-ip routers
I use my laptop with WiFi at school, home, work and by my parents. Each of these has a different setup (one DHCP and three different static IPs). I am looking for a way to attach a preconfigured setup ...
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2answers
452 views
How to restore MAC address in Linux?
I have changed my MAC address in my Linux machine using ifconfig. Now the problem is I have not saved my original MAC address. I want to restore it without rebooting.
Is there a way to do it?
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2answers
366 views
Permanently spoof MAC address on OSX
I'm changing my MAC address for my MacBook's AirPort because the list of devices my router can hold (only 25!) is full.
Therefore, I used ifconfig and the tool ChangeMac. Everytime I restart the Mac ...
3
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1answer
185 views
Do MAC addresses on virtual machines mean anything?
MAC addresses on virtual installations such as VirtualBox are not connected to hardware.
Do they have any absolute meaning, and are they registered somewhere, the way hardware MAC addresses are ...
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2answers
310 views
How to find mac address of a machine in my network
At work, we have a network with internal ip addresses given to machines.
Question:
How can I find MAC address of machines in my network whose IP address is known to me.
Also how to find mac address ...
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0answers
854 views
Spoof MAC address in Windows 7: Bypass
I am trying to spoof the MAC address of my new Win7 laptop. To do so I tried specifying an alternate value from the Device Manager which took no effect. I also tried from the registry, as per other ...
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1answer
282 views
Firewall rule in Windows 7 that allows MAC Address Proxy Authentication
I'm using Windows 7 Ultimate and I', using Windows Firewall with Advanced Security.
My proxy server uses MAC Address as it's authentication scheme. When the firewall is in disabled state, I can ...
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1answer
521 views
How can I change the MAC address of Microsoft Loopback Adapter?
I am trying to designate a MAC address for MS loopback adapter. Installation is fine. I see in device manager, the adapter and in advanced tab, I enter the mac address I desire. But when I do in cmd ...
15
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3answers
2k views
Are MAC addresses unique when coming out of the factory?
According to Wikipedia:
A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment
But how unique are ...
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1answer
289 views
Copy Mac Address into Clipboard help in Windows 7
Given the batch script below. How would I be able to give me a MAC address with no dashes and add a "D" in front of it? So when I go and paste, it has a MAC address that starts with a D and there ...
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1answer
659 views
tools to hide ip and mac address
Are there any fast and free software to:
Hide my IP address without proxy server as it changes the layout of the web site and makes it not fast at all.
Dynamic MAC address generator to change it ...
2
votes
2answers
493 views
MAC Address help
Okay, so I have officially tried every solution to an issue I can think of. I have even tried 3 distributions of LINUX, with still the same issue. [even bought Windows 7].
I have been trying to ...
62
votes
2answers
7k views
How to avoid exposing my MAC address when using IPv6?
On my Macs, each IPv6 address includes the MAC address of a specific computer (not of my router). Sites such as ipv6-test.com not only show it, but even tell me it belongs to an Apple computer.
This ...
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2answers
368 views
Cannot change MAC address on notebook
I've tried to change MAC address on a notebook Toshiba Satellite A200-14E Windows Vista without success. I've tried to change it via Network settings - Adapter settings.
I've set Network address ...
0
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1answer
613 views
Intel Ultimate-N mac address change [closed]
I want to change the MAC address of my laptop. My laptop has Intel Ultimate-N 6300 wireless card.
Although I've managed to change the MAC address in Linux, I still cannot change the MAC address in ...
3
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4answers
3k views
how to get MAC address for wireless access point?
How can I get the MAC address for the wireless access point in Ubuntu?
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5answers
1k views
How to find MAC Address of a PC without powering it on?
How to find MAC Address of a PC without powering it on?
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1answer
183 views
What's wrong with my MAC address?
I have a D-Link DSL-2650U router, and exactly one computer on the network. For reasons of port forwarding I want to give my computer a static internal IP address, so that I don't take the chance of ...
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2answers
891 views
How to find who is connected to my computer from MAC address?
When I type in the command netstat -an into cmd, I get information that one of my ports is opened from some MAC address. My qestion is how to close that port and how to find from the MAC address what ...
