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

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Make router report MAC address when device connects/disconnects - preferably by HTTP POST

I want my router to report (preferably by making a php POST containing MAC address) every time a device connects/disconnects. I currently have a Netgear router (which is able to run dd-wrt), but I'm ...
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37 views

How can I connect to a router through a switched ethernet network?

I have a computer and a router connected at different positions to a switched ethernet network. I want to connect them as if I had plugged my computer directly into the router. As I understand it, ...
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15 views

How to best configure virtual machine network

Background: I have the following setup: Mac (OSX 10.8.5); Bootcamp partition; Virtual Machine, VM, (using Parallels Desktop) that runs from the physical Bootcamp drive; I have some Cross-platform ...
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29 views

How can I change the MAC address of hosted network?

I am on a MAC-filterd network. I have a pc and a laptop. I started a hosted network on my laptop. The Laptop has Windows 8. I set up a hosted network on this laptop to connect a smartphone. So the ...
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43 views

Mac spoofing for virtual machine to trick my university's IT system

I need help in setting up Oracle's VirtualBox port forwarding and/or mac spoofing. I feel it's important to add that my knowledge is very limited in this field and that my question could even be ...
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27 views

Bridge-mode networking and virtual network adapters

Say I have physical network adapter eth0 on my host machine and VirtualBox virtual machine with bridged network. Host and virtual machine have different IP addresses in the same network. I can easily ...
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2answers
86 views

How to find MAC address of a mobile phone which is in range of my Wi-Fi network but not connected

It is clear that some big malls are tracking some Wi-Fi enabled mobile phones. How can it been done? I have the similar issue: How to get the MAC address of a mobile phone when it comes near to my ...
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1answer
14 views

Vendor devices produce limitation by MAC address?

Maybe it is silly, but I wonder if the first 3 hexadecimal values in MAC address represent vendor id (in 01:23:45:ff:ff:ff it is 01:23:45), is there a limit of 16777215 (ff:ff:ff) devices per vendor?
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Multiple MAC addresses on a single network interface (Windows)

Since the other question about this (Multiple network interfaces on a single NIC in Windows) only asks about different routing, I'm going to ask this again: Is there any way to create multiple ...
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72 views

A Printer that has multiple MAC Addresses?

I have a Lexmark printer that for some reason shows multiple MAC addresses when its connected to a switch. Thats so weird. Anybody had the same problem? How can I solve it and how come it has ...
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2answers
18 views

Is MAC compulsary for a NIC?

Is it possible for a NIC/ network adapter to communicate with internet if it is not assigned a MAC address ?
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1answer
30 views

Issues with IP address when changing MAC address

Whenever I spoof my MAC address the WiFi fails to acquire IP automatically and I have to set it manually. My original MAC address is blocked on the network. Please help me, I'm facing IP address ...
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6answers
184 views

Can I create an Ethernet network without using IP

As I understand from the ISO-OSI model, MAC addresses operate on a different layer than IP addresses. This is clear to me. I can accept that Ethernet (LAN) just does not make use of IP addresses to ...
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1answer
38 views

Why is the IP and host specified in the /etc/hosts not pinged as expected?

I have an entry in my /etc/hosts file which points to each host on my LAN. I've completed specified all my hosts and corresponding host mac addresses in my Time Warner supplied router. I've created ...
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5answers
970 views

How does a router find the MAC address of next hop router?

I know that in an Ethernet LAN, the ARP protocol is used to get a MAC address from an IP address. How does my router get the MAC address of another router on an external network if ARP is not ...
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2answers
66 views

Query MAC address of Powerline Ethernet Adapter

I have a computer connect to the Internet using Powerline Ethernet adapters in this fashion: {Internet} --- [Router] --- [Powerline Adapter A] +++ [Powerline Adapter B] --- COMPUTER Where --- is an ...
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1answer
64 views

iPad and Wifi Access point on a MAC restricted network

I'm trying to help my sister get her iPad online in her university halls of residence. She has one ethernet port in her room and there is no wireless provided. I got her a wireless router (which is ...
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2answers
55 views

What will happen if a bridge got a wrong mac record?

Let's say there is host H1, H2, switch S1 S2, and S3, bridge B1, B2. It is connected like this: H1 - S1 - B1 - S2 - B2 - S3, | H2 H2 is sending frames to H1. Then, ...
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1answer
62 views

CE interface in Solaris 10 drops mac address (per ifconfig)

I recently installed Solaris 10 1/13 and proprietary TCP PEP software on a new hard drive within an old Sun v210. When the PEP software starts, the Sun's CE0 interface loses its "ether" address, ...
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42 views

Windows - MAC address whitelist on wired network?

In Windows (XP or 7), is it possible to configure either Windows, a software firewall, or network cards such that the computer will only communicate with specific known MAC addresses (e.g. the MAC ...
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1answer
39 views

Does a network bridge maintain the topo a bridged lan?

As the title suggest. Let's say we have switch A, B, C and A connect to B with bridge D, and B to C with E. A <--> D <--> B <--> E <--> C Does D know the mac of nics ...
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2answers
211 views

Does a switch know the mac address of other port of a bridge?

Let's say we have switches A and B, they are connected by bridge C. Does A knows about the mac of nics connected to B? Is it true that every time when nic on A want to send a frame to nic on B, the ...
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263 views

Bypass MAC Address Filtering

I live in an apartment building that provides internet to it's patrons as an amenity. This internet is limited to 3 devices per tenant and the devices are registered by MAC Address. As you may have ...
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56 views

WIndows firewall rule to receive nbtstat information

I'm using nbtstat.exe to gather MAC-Addresses of machines in my domain. I'm only able to get a result, if the firewall is turned off on the clients! Output if firewall is turned on: Microsoft ...
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89 views

How many bytes of a WLAN packet do I have to examine to extract MAC addresses?

How many bytes of a 802.11 (WLAN) packet do I have to examine to be able to extract source, destination, receiver and transmitter adress from the header? This image suggests the header length of a ...
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2answers
178 views

What's the difference between wlan.sa, wlan.ra, wlan.ta and wlan.da?

Tshark/wireshark (CLI) has several fields to display for WLAN, including these four (+ description from manual): wlan.sa: Source address wlan.ra: Receiver address wlan.ta: Transmitter address ...
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1answer
235 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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1answer
43 views

Is it possible to sync specific router settings across multiple routers?

I recently purchased a second Linksys wireless routers set up on the other side of my home and I am wondering if it is possible to somehow sync particular settings between the two? For instance what ...
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1answer
84 views

Packet count per mac address on wireless network

I'd like to get to know how many packets get transferred to a certain MAC address in my wireless network, protected with WPA2. I'm not at all interested in the contents of the packets, I'd just need a ...
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1answer
475 views

The same MAC address twice on network?

Recently the Wifi network at our small company was messed up in a strange way. When I did a arp -i en1 -a I did in fact see the same MAC address listed twice. When I inquired with a ...
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104 views

How to find the MAC addresses of an unsecure network, on Windows, using the easiest steps?

As I try to prove that an insecure network, even with MAC filtering feature, is a bad thing (link here) , I've tried to find out the easiest way to do so. I'm trying to show that it's easy to enter ...
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2answers
519 views

Wifi password VS MACs filtering - in terms of speed vs security

Background First I need to say that I know about how better it is to secure the wifi network even with WEP , than to not secure it at all, and I know there is a thread asking a similar question like ...
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53 views

Duplicate MAC address on two separate Ceton home theater PCs

I have two separate Windows 7 PCs that both use the Ceton InfiniTV 4 PCIe tuner card. The Ceton software bridges the network card with the tuner card. The resulting network bridge on both machines ...
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156 views

Separate MAC Filtering Rules for Each Frequency in Linksys EA2700-RM

I recently bought a Linksys EA2700-RM router for my home. I have set up the 5GHz network, the 2.4GHz network and the Guest network. My 5GHz network is for highest priority devices, the 2.4GHz network ...
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58 views

How to change the Wireless MAC address on a Tonido Plug (Linux)

I am working on a project where I need a wireless network where I can freely and easily change the MAC address on the Gateway. I have a Tonido Plug2, which runs linux and is only accessible through ...
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1answer
219 views

arp command returning weird info for Apple routers

When I use arp -a command, my two Apple routers (Extreme and Express) return weird results, unlike my other results. The IP address isn't a LAN IP address like the other results and the MAC address ...
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409 views

How do we get the router's MAC address without ARP?

How can a host that does not support Internet Protocol (it runs on layer 2 only) get the router's MAC address so that it can send Ethernet packets over?
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2answers
210 views

DHCP Reservation vs Mac address filtering. Are they the same security?

I am able to give an ip address to a wired/wireless device based on the mac address. Other automatic DHCP is turned off. Is this as effective as a security measure as MAC filtering? It just seems ...
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Two wireless extenders with same mac address…How to assign IP address dhcp

I have two wireless extenders, and they both have the exact same mac address (same make and model) Now, they work fine in the network, I just wanted to know how can I assign them specific IP ...
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167 views

Spoofing Windows 7/8 Mac address with 00: manufacturer?

As I am sure everyone knows starting with Windows Vista, you are not able to spoof MAC address to something that starts with a 00: For a project I am doing I have to spoof it as starting with 00: I ...
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302 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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65 views

Custom scripting between grub2 sessions - chainloading

I'd like to use grub2 for changing MAC address for eth0 before booting into the main OS. I wonder how can this be done.. I have learned about chainloading, so 1 can choose a boot entry and have it ...
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3answers
225 views

Find some access point IP Adress from Access point Mac address on the internet?

Is there any router or database which can we access to put some access point or router MAC Address and get IP address? Or i just think the mac address changes when a packet leave a router on the ...
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2answers
84 views

Layer 2 switching or Layer 3 forwarding?

I have a wireless router installed at my home (provided by ISP). Scenario: Router IP: 192.168.1.1 My Machine IP (X): 192.168.1.2 IP of machine Y: 192.168.1.3 Now when I ping Y from my ...
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13answers
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What is the exact use of a MAC address?

I understand that IP addresses are hierarchical, so that routers throughout the internet know which direction to forward a packet. With MAC addresses, there is no hierarchy, and thus packet forwarding ...
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490 views

Automatic rename computer based on mac address

How to automatically rename computer host / name based on it's MAC address? I have 40 PC's and I need a script to rename them automatically at logon after I use ghost. Win7 environment.
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Parallels Desktop VM appears as having the same MAC address as host

On Parallels Desktop (OS X) my guest VM (Win 7) is set up to use bridged networking. It would normally show up in my router's DHCP page with its own unique MAC address, and thereby would allow me to ...
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Why are not all MAC addresses randomly assigned?

At 48 bits, this would seem reasonably safe: you would need 751 devices on a network to have a 1/1 billion probability of a collision, and 751 devices with entirely layer 2 connections are rare -- ...
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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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184 views

Change Mac Address on Wireless NIC

Problem I currently use a Intel(R) Centrino(R) Advanced-N 6230 network adapter, and I need to spoof the mac address in order to test security on my network. The problem is that the latest driver for ...