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

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Router changes its MAC Addresses

I constantly lose my Internet connection. After analyzing the problem I found that my router, TL-WR741ND [TP-Link], changes its MAC address by switching through the WLAN's, LAN's and WAN's MAC ...
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ifconfig won't let me set MAC address that doesn't begin with 00:26

I have an Intel 1000 BGN Wi-Fi card and I tried to set its MAC address to 00:00:de:ad:be:ef, but this didn't work: [root@localhost .]# ifconfig wlan0 hw ether 00:00:de:ad:be:ef SIOCSIFHWADDR: Cannot ...
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833 views

Discover the public ip of a network without being connected

Let say, I'm next to a network and can see the traffic (with airodump or similar tool) but can not decipher it (because I am not connected on the network). Is it possible to discover the public ip ...
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1k 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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694 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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804 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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1k views

Intel Ultimate-N mac address change [duplicate]

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 ...
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231 views

Onboard Ethernet suddenly stopped working to router

Yesterday I had a sudden problem with my Ethernet connection to my router. My computer is a Pentium 4 with Windows XP SP3 running on it and it was working fine earlier in the day, but yesterday night ...
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1k views

VPN authentication and MAC addresses

I have to set up a VPN (various clients connecting to a web service on a server, which is also the VPN server) and I want to make sure that no user will share his/her credentials with third parties. ...
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How to know if a network is locked by MAC address

If I unplug a internet cable from another PC and plug it in my laptop, but it says no internet connection. Then I've been told that the network restrict certain MAC address. My question is that is ...
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906 views

What's the limit of a home router's MAC address table?

I am considering creating a large LAN (possibly greater than 255 computers) using home wireless routers such as Linksys WRT54G as switches (DHCP off). What, roughly, is the size or limit of the MAC ...
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2k 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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1answer
492 views

How to limit internet access time per mac address

I want to be able to limit the amount of time some devices can connect to the internet to one hour per day. As an added bonus, I would like to restrict some sites (or categories of sites) per MAC ...
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2answers
68 views

Devices with user re-writable MAC addresses [closed]

I'm looking for routers, cell phones, Internet sticks etc. that have user modifiable MAC addresses. Does anyone know how to spot them?? Also how to write the MAC address.. I've heard Linux is a good ...
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2answers
324 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
1k views

Change Broadcom Wireless adapter MAC addres to any address

I need to change my MAC address of Broadcom 802.11n Network Adapter to address of my choice - I need to mask myself as another device in the network. The conflict of the devices will not happen. Under ...
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1answer
427 views

How to block a MAC address from connecting with my computer? [closed]

How can I block a certain MAC address from connecting to my computer? In fact this computer is in the LAN, and maybe has a virus.
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1answer
1k views

Can anybody tell me how to hide my mac address of my pc from hackers, spammer and bad neighbhour sites? [closed]

can anybody help me to hide my mac address of my machine from hackers and spammer, etc Also is there any other things to hide from hackers . ( IP address i have hide already but if anything more than ...