A Media Access Control address (MAC address) is a unique identifier assigned to network interfaces for communications on the physical network segment.

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Can the MAC address be “hidden”? ie that the information is not even delivered [closed]

Along with the above question, I would also like to know how can the MAC address be properly changed? Moreover, can it be replaced by a casual sequence or there are specific addresses to use? Finally, ...
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76 views

Could this piece of code be harmful ?

I just wrote these 2 functions in C#.net and it can get any user's system IP and MAC address. Isn't this harmful since I got help from microsoft documentation. Could these lead to potential damage or ...
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Changing MAC address on Virtual Machine [migrated]

Running linux on virtual box with Windows 10 as a host. I want to edit the mac address on linux and was wondering if a network admin would see the spoofed linux mac or my Windows one? Would I have to ...
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1answer
90 views

Is it good idea to use a access point MAC address as wifi password?

I realized that one network I'm connecting with is using a MAC address of one of its interfaces. If an attacker would know that fact, could he somehow obtain the MAC address wirelessly and break ...
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3answers
79 views

Can WiFi detect you even if you aren't connected

I've read that the way WiFi works is that your computer sends out requests looking for any WiFi it recognizes. I use a MAC spoofer but if there is a WiFi in range before I have time to spoof my MAC ...
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2answers
110 views

Deauth all users on AP except yourself

I am looking to create a small first project to further my self education into infosec. I will be putting this on my Github. My idea is to create a script that automates the process of deauthing all ...
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1answer
49 views

Static MAC address on Switches and routers

I was having a discussion with a friend of mine in IS industry and he insisted that setting static MAC addresses (i.e. port security) on devices were a effective way to block MAC spoofing. I found ...
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1answer
86 views

What attacks or exploits are possible when MAC address, IP, and Port of a WiFi access point are known? [closed]

I just accepted a position at a small firm and was testing the previous WiFi setup for flaws and exploits that were possible. We have two AP's for business and guest connections, everything checks out ...
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2answers
58 views

Is another MAC address generated when a wireless is created using the same device for LAN?

I notice that the devices listed on the wireless system listed a MAC address that is supposed to be the router but it is not the same # that is on the router case. It differs by one one digit, ...
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2answers
81 views

How to find the ip address of a wifi router while I have it's MAC address?

I have a wifi scanner which shows me the MAC addresses of the wifi routers nearby. It displays SSIDs in one column and MAC addresses in another column. I want to know the ip address of the router. ...
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1answer
103 views

Mac overflow (flooding)

On a recent switch, is mac flooding still a vulnerability to be careful of? If that attack is patched on most of them, then on which type of switch is it still vulnerable?
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1answer
384 views

How can Port Stealing be used as a MiTM attack?

I read about and tried a lot of MiTM attacks but I just don't get how Port Stealing can be used as a MiTM attack. In my understanding one can "steal" a Port by sending Ethernet Frames faking the ...
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2k views

How to break MAC address filtering?

If a MAC filter prevents you from connecting to a network, how can you break it or include your device's MAC in that filter?
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1answer
138 views

Locking Linux system to work on certain hardware only

Is there a way of locking a Linux system to work with a specific (pre-defined) hardware only? I am developing a commercial product and want to make it a bit harder for someone to clone the whole ...
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0answers
17 views

Is Android WLAN MAC Address vulnerable? [duplicate]

What can a person do if he/she has WLAN MAC Address of my Android Device? What can be done to save my personal information?
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1answer
163 views

Does a VPN Provider Know My MAC Address?

I know MAC is a layer 2 address, so it's only sent to the next router in the chain. Does a VPN provider get that information when I'm connected to their service? Is their router considered the next ...
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5answers
168 views

Reasons for gathering MAC address list

Suppose there is a password-secured WiFi network that exists to provide users with Internet access only. Edit: Consider a guest/mobile-BYOD network as an example. Since filtering access to a WiFi ...
4
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1answer
207 views

How does detecting promiscuous mode using an ARP test work?

I have read that we can detect whether a system is running promiscuous mode by sending out an ARP request with a fake broadcast address e.g FF:FF:FF:FF:FF:FE.This will be blocked by all NIC's ...
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1answer
73 views

MITM sniffing packets

I fail to understand how a MITM attack sniffs packets and modifies them.In the case of ARP spoofing although the attacker has spoofed the MAC address of a host, how does he modify it as the IP layer ...
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2answers
156 views

Is there any way to determine the location of a laptop based on its MAC address or serial number?

If I have the MAC address and S/N of a Lenovo 3000 Laptop, is there some way for me to find exact street location of this laptop ? This machine was stolen from me last year and was my back up machine ...
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2answers
381 views

How can I find out who is behind a Mac address? [closed]

I was connecting a bluetooth device to my tablet and noticed that when scanning for the devices one "device" was actually a Mac address. We (me and my husband) have been under a hacker attack already ...
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1answer
534 views

How does Amazon Fire TV know my name/account? [closed]

I bought a Fire TV stick and inserted it into the HDMI-port of my TV. I was presented with a dialog to select my wireless router so it can connect online. Just after I did that, it asked me if I am ...
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1answer
1k views

Tracing stolen android tablet via MAC address [closed]

I lost my tablet , but I can see that the tablet is connected to the network on my router: :So I know the MAC address but I am unable to trace my tablet using this information and I am running out of ...
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2answers
1k views

Is my WiFi connection protected?

In my college the WiFi is open type connection and before I connect to it using my laptop with windows 8.1, it displays message "Other people might be able to see info you send over this network " ...
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2answers
193 views

Can changing a MAC address give an attacker more leverage in a network?

Security lessons force us to use limited users (Standard User) on Windows networks. I found that an administrator account can change his MAC address from Control Panel\Network and Internet\Network ...
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1answer
497 views

At Starbucks, is my MAC address sent when I accept the terms of service for free Wifi? [closed]

Recently, I overheard by chance some technically savvy guys saying that when you accept the terms of service in order to use the "free" WiFi at Starbucks (which you pay for when you buy some coffee), ...
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1answer
295 views

How to retrieve the MAC address of a remote IP [closed]

I have an IP address, and I want to find the corresponding MAC address. The IP address is in the same city, so we're connecting to the same network. How do I find the corresponding MAC address?
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142 views

Is there any security in locking down a router by MAC address for wired clients?

At our office we have a router on the table, and the powers that be want to lock it down by MAC address to stop people from plugging in cables for other computers i.e. intruders. Given that resetting ...
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1answer
194 views

help identifying an IP address from email sent from my gmail account

Someone sent the following email from my gmail account. I believe it was hacked and if I can find the IP address I may be able to identify the person who did it. Here is the information. Please let me ...
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What can the school do with my MAC address? [duplicate]

At my school they are requesting my MAC address so that I can use the schools Wi-Fi. Now I understand that the school can see what sites I am going to while I'm at school. But can the school see what ...
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1answer
145 views

Is the MAC address encapsulated in the Internet packets? [duplicate]

This might be a stupid question, but what is the range of the MAC addresses? Are these somehow leaking to the Internet with packets that a user sends (so they know where to return)?
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1answer
167 views

Identification info that my wireless card sends to the (wifi) network

Are any other identification information that my wireless card sends to the Wi-Fi network apart from the MAC address ? If so are they changeable? Let's say, for example, that I connect to a Wi-Fi ...
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2answers
3k views

Can 2 devices have same host-name on same network? [closed]

I can see one unknown android device on my network, but it has same host-name as my android device. QUESTION 1.Is this possible that on same network two different devices can have same host-name ? ...
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Is it dangerous to post my MAC address publicly?

When posting questions, it is often quite useful to include debug output. However, it sometimes include the MAC address of my laptop, router, or both. What are the possible dangers of releasing these ...
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2answers
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Can viruses steal MAC addresses? Why is MAC address bad?

Can downloaded executables get my MAC address and send it to somewhere else? Also, why is it a security risk to have someone else use my MAC address, considering that it can be spoofed?
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Is it possible to retrieve MAC address of a host using Tor?

I know that Tor is used for anonymity while browsing in the Internet. I heard that by using Tor, it is possible to hide my IP. But is it possible to hide my MAC address also?
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1answer
488 views

Is there a way to identify the location of a person trying to intrude your wifi network? my wifi router is picking up his attempts

Aug 30 20:28:09 dropbear[6799]: Child connection from ::ffff:5.10.69.82:38463 Aug 30 20:28:11 dropbear[6799]: login attempt for nonexistent user from ::ffff:5.10.69.82:38463 Aug 30 20:28:12 ...
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2answers
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Can attackers be traced if they used public WiFi

I always thought it's possible to track attackers unless they try to hide their identities using some form of "physical" disguise. No matter how many proxies you use even TOR seems to be traceable by ...
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2answers
1k views

Is it possible to ping a LAN card through its MAC address? [duplicate]

As you can start a PC through its 'WAKE ON LAN' feature on private networks, can you trace someone's online status through their MAC address over the internet ?
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1answer
316 views

How can spoofing a certain MAC address enable sending probe requests that I was never connected to?

I was wondering how could my computer that uses a spoofed MAC address be sending probe requests for APs that I was never connected to? Note: The other computer with the original MAC address I was ...
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3answers
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How can a webpage get the MAC address?

I was logged on to my router and filling out some information. I clicked a button and a field was automatically filled in with my computer's MAC address. How is this possible? Does it present a ...
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1answer
647 views

How can I trace MAC address of not asosciated devices in my WiFi network?

I'm looking for hints to solve my problem. I would like to trace all devices that are in my surroundings. I know how do it when someone already access to my WiFi network, but I'm also interested to ...
4
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5answers
4k views

Is MAC address filtering effective on a wifi router? [closed]

I want to improve the security of my home wifi. My neighbor wants to crack my Wi-Fi password with a nutcracker. I tried to activate the protection by MAC address, but now my laptop and smartphone ...
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1answer
2k views

MAC-address restricted port forwarding

I have an ASUS RT-AC68U router and would like to set up port forwarding, but I would like to restrict which MAC addresses can connect through that port. My use case is that I'll have a live camera, ...
23
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1answer
1k views

Does TCP/IP protocol offer a reliable way of determining who the actual sender was?

So I'm just poking around the TCP/IP protocol using a Ruby library called PacketFu, and it seems to me that in each packet, it is possible to set all of the following Source IP Destination IP Source ...
5
votes
6answers
5k views

What can my university see if they have my MAC address?

when i first got to my university i had to provide my MAC address to get access to the internet. What i want to know is what information can they get from having my MAC address linked to my name. i ...
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1answer
467 views

DOCSIS modem only authenticated by MAC?

Is a DOCSIS modem only authenticated by the CMTS by a MAC address or are there any other AAA techniques? In that case, how do I prevent other customers from spoofing my modem's MAC address? Cable ...
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2answers
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Devices with cryptic names and Chinese ip addresses connected to my router

Please see image. Does anyone have any idea of whats going on? They come and go as attached devices in my attached devices list. I also attached my routers log for you all to see. ...
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1answer
2k views

How are shopkeepers getting the MAC address of wifi enabled smartphones?

It is clear that some big malls are tracking all the wifi-enabled mobile phones before they are connected to the network... How can this be done? I have a similar issue... how to get the MAC address ...
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1answer
4k views

How to prevent DHCP Starvation attack?

All this while, I assumed that switchport security is enough to prevent DHCP dos attack. If I set it maximum 1, there can be no more mac addresses packets. But, a friend told me that using the tool, ...