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

learn more… | top users | synonyms

1
vote
0answers
56 views

Unknown MAC in network

A few days ago, I noticed an unknown MAC address in the statistics page of my home router. The OUI lookup yields Cisco as manufacturer. However, I don't have such a device in my network -- actually, I ...
6
votes
4answers
3k views

Security provided through MAC filtering: Wired vs. Wireless Networks

My question refers to the following article on Wikipedia: MAC Filtering. The article states: MAC filtering is not effective control in wireless network as attackers can eavesdrop on wireless ...
1
vote
1answer
351 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 ...
0
votes
0answers
24 views

unknown mac addres on my connection hotspot to my laptop

I had a ip address and a mac address on my WiFi ,how do I find out who it is? The ip was in Italy I am in Australia
0
votes
0answers
7 views

Few questions about MAC addresses and related material [migrated]

I have a few questions, but all under the same umbrella topic. If I find out a MAC address of a machine on a LAN, and I spoof my MAC to match that particular machine and join their LAN, how will ...
0
votes
6answers
117 views

Does MAC address filtering provide security? [duplicate]

Sometimes I need to configure the router and choose which devices can connect to my network (MAC address filtering). For example, limit connections to 3 specific machines. But for an advanced user, it ...
81
votes
7answers
29k views

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 ...
3
votes
2answers
92 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, ...
0
votes
1answer
54 views

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, ...
3
votes
1answer
79 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 ...
4
votes
1answer
101 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 ...
0
votes
3answers
95 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 ...
3
votes
7answers
61k views

How to bypass restrictive mac address filtering on home network (not malicious)

Background A short sketch of my situation before I formulate my question: I am on a large home network, which is privately administered by a couple of admins. The network consists of a lan and a ...
3
votes
2answers
207 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 ...
4
votes
1answer
261 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 ...
2
votes
1answer
67 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 ...
29
votes
3answers
14k views

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 ...
0
votes
1answer
115 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 ...
1
vote
2answers
143 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. ...
5
votes
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 ...
4
votes
1answer
138 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?
3
votes
1answer
726 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 ...
6
votes
1answer
166 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 ...
10
votes
4answers
4k 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?
0
votes
0answers
19 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?
2
votes
2answers
183 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 ...
2
votes
1answer
170 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 ...
2
votes
5answers
204 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 ...
0
votes
1answer
81 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 ...
2
votes
1answer
9k views

MAC spoof not working?

I have set up our home router to only allow certain MAC addresses to connect. One way to test if the filter is working is to spoof a MAC address not in the list and trying to connect to the router. So ...
0
votes
2answers
470 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 ...
1
vote
1answer
721 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 ...
1
vote
1answer
2k 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 ...
0
votes
2answers
2k 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 " ...
-3
votes
2answers
3k views

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?
2
votes
2answers
207 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 ...
0
votes
1answer
551 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), ...
1
vote
1answer
334 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?
1
vote
2answers
146 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 ...
5
votes
3answers
24k views

Can a website still detect my real MAC address even if I use different virtual machine each time I visit the website?

Suppose I use a proxy and a different virtual machine each time I visit a particular website, will a website still be able to detect my MAC address and/or uniquely identify me? Assume that the website ...
1
vote
1answer
206 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 ...
17
votes
0answers
2k views

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 ...
1
vote
3answers
13k views

Getting access to MAC address of access point from a device wired to the network

My home network consists of a router (with wired and wireless connections), and a separate access point used to repeat the router wireless signal. A device is further wired to the access point; it ...
-1
votes
1answer
158 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)?
1
vote
1answer
180 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 ...
0
votes
2answers
4k 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 ? ...
-1
votes
1answer
674 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 ...
3
votes
2answers
4k views

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?
2
votes
1answer
506 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 ...
4
votes
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 ...