Questions tagged [mac-address]

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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What is this unknown 10-digit device address? Found on an iPhone [migrated]

I saw this unknown address under my personal hotspot summary on an iPhone: e:69:a5:97:7:17 Interestingly enough, it only has 10-digits so it cannot be a MAC address. What is it then? Should I be ...
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25 votes
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Identification of a laptop using a spoofed WiFi MAC address

I own a small coffee shop in a highly-populated area. We've noticed that several computers are connecting to our WiFi network using spoofed MAC addresses (e.g. 11:22:33:44:55:66). Is there any way of ...
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Are LAA mac addresses generally more suspicious than UAA

As far as I understood LAA mac addresses are assigned by software rather than hardware and I've read that they are rather uncommon and used e.g. for resolving conflicts. Therefore I assume devices ...
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Suspicious MAC address when using personal hotspot (iPhone and MacBook Air)

Personal hotspot connection from iPhone 12 used on my MacBook Air. Under Settings - Mobile Data - Personal Hotspot (iPhone), I see 2 data usage components: 1.5 GB - MacBook 20.2 KB - A suspicious MAC ...
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Preventing internet access for smart devices using MAC filtering

If I use MAC filtering on my router to prevent internet access for a smart device e.g. IP camera, could it feasibly change the MAC address to get around this and leak data to a remote server? If so, ...
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What do unkown MAC addresses mean in this context? [duplicate]

I've recently begun learning about Cyber Security related to Bluetooth. I toggled the "Show Bluetooth devices without names" (or something similar) in my phone in developer mode and went to ...
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Tracing MAC addresses found in router logs [duplicate]

How can I trace the following MAC addresses and find out who they are or belong to: 68:B9:D3:73:00:2F 98:E2:34:05:BD:8E When checking my router, these MAC addresses were in the drop-down menu.
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Should or shouldn't I show a serial number, MAC address and other product ID when I sell it online?

I want to sell online some of the electronic stuff that I don't need anymore, such as my ASUS Wi-Fi router, and I'm wondering when I upload photos of it should I leave its serial number, MAC address, ...
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Would it be possible to create an external mac address spoofer?

I was wondering if it would be possible to create some sort of ethernet passthrough device, but this device also functions as a layer 2 mac address spoofer, which can be used with any device without ...
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MAC address of router changes when i connect to VPN

If I connect to my VPN and then run arp -a the MAC address of my router changes to 00:00:00:00:00:02. Is this normal behaviour? What is the reasoning behind this? Furthermore a MAC address spoofing is ...
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SSL: MAC address tampering detecting? [closed]

Suppose that in some scenario using SSL, a hacker has succeeded in obtaining the MAC address, but not the encryption. Can this be detected? Also, suppose he changes the MAC address: what should he ...
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How do we protect from the assignation of an unknown MAC-address to the network interface?

If person Y sticks his adapter device into a fixed computer, person Y will be able to bypass MAC related restrictions since the inserted device has an unknown MAC-address. How do we protect from this ...
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When MAC flooding, why would an attacker specify IP addresses and/or TCP ports?

I'm specifically referring to the macof tool (part of the dsniff package). As I understand it, MAC flooding is meant to overload a switch's CAM table, which maps MAC addresses to switch ports. Where ...
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Suricata and rules based on MAC address

I'm working on a project to implement SDN in a network. One of my flows is redirecting to the Suricata IDS and the flow works in layer 2 with MAC address. Since I've read that Snort only works in ...
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Are there security reasons for prohibiting universal mac address modification?

Background In a standard 48-bit MAC address, the 7th (most significant) bit specifies whether it is a universally-administered address (UAA) or a locally-administered address (LAA). If it is 0, then ...
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Using MAC Filtering in addition to WPA2 Encryption

I've been trying to find some answers regarding using MAC filtering on my router in addition to having WPA2 encryption but I couldn't find any clear ones. I understand that using MAC filtering solely ...
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Why does my MacBook air have so many MAC addresses, according to my router?

I am investigating some strange issues with my home network, and decided to have a look at my device history. I only have one Macbook Air, but my device history is showing ten, all with different MAC ...
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How can a VPN circumvent MAC address filtering?

My DSL-WiFI router provides MAC address filtering. This is used for access restrictions, e.g for parental controls to keep certain devices off-line during certain hours. A device on the restriction ...
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MAC Flooding detection

I am interested in the metrics of the attack. Is there any packet rate that can be considered a reasonable threshold to detect this attack from traffic perspective? Or this is completely connected to ...
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Smart Lightbulb Using Common IRC port found in NMAP - anything to worry about?

UPDATE: Looking at the product again, I don't think this even has built in Wi-Fi (it uses bluetooth for the connection). I don't know what I am looking for here in Wireshark, but I added the host ...
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Unkown ip adress in my lan [duplicate]

While scanning my LAN with Angry IP Scanner, I found an ip @ that I didn't recognise 192.168.1.59: IP Ping Hostname MAC Address MAC Vendor ...
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Is it possible to track by Bluetooth headphones

Is it possible to find bluetooth device if I have MAC of the device.
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How can I hide my mac address when using a public wifi? [duplicate]

As a new student of cyber security, I have started to see in real-time how an individual can actually scan and view the mac addresses on a public wifi connection. How can I hide my mac address when ...
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How do computers store printer presets?

When you connect to a printer on MacOS or Windows, the system stores the printer so you can connect to it later. Does anyone know which criteria is referenced to validate it is the same printer when ...
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How can I avoid getting exposed while travelling to Russia?

UPDATE: There is a similar question, but my question is different because it is very narrow and about a very specific security concern. In short, I used a laptop to make posts on a Russian social ...
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MAC/IP address hiding

I am doing some experiments with wireless protocols on ns-3. What I want to ask is how can I hide MAC address/IP address, because I need it for my experiments? Is it possible to use encryption on ...
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1 vote
1 answer
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MAC Spoofing - Keep victim out

I have successfully done a MAC Spoofing Attack on my open (ad-hoc) network using the macchanger tool (OS: Kali linux). I would like to know what are the common techniques to keep the connection alive ...
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What type of information does a MAC address provide exactly? [duplicate]

For instance if someone had my MAC address would they have my name and address location or would they just have the name of my device. Also could they track me down by having the MAC address or would ...
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Does a browsers' vpn feature securely modify my ipv6 address?

If I use inbuilt vpn feature of a browser, does it modify my ipv6 address, making me safe as far as my mac address is concerned ? OS - Ubuntu 16.04. Browser - Opera
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2 votes
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How to prevent a DHCP Starvation attack in a wireless network

Is there any way to prevent a DHCP Starvation attack when using a wireless network with anonymous users? Port security cannot be used since maxing the number of clients that can connect on a port ...
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What information for identification does a WiFi router get from a connecting device (Android)? What information can be spoofed?

When I want my device to connect to a WiFi router and make the router not recognize the device I have to change the MAC and the hostname. Is this right? And what information will also be usually ...
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What if I alter my MAC address to my gateway's MAC address?

Can I listen anyone in the same network? I've tried, but it doesn't work(if I've done it right).I can't see something valuable in wireshark on my laptop.
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How I can get MAC address of devices using passive wifi?

There is a project at the university, there are a lot of mobile phones where the wifi works in passive mode and is not connected to an access point. Is it possible to get the MAC address of these ...
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1 vote
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what exactly we can do with a MAC address? [duplicate]

I have searched a lot about exactly how the MAC address can be useful for hacking and security testing but I didn't find anything. In movies it is like a key to the gate but I didn't find any tutorial ...
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NAC bypass with MAC spoofing

I just started my job as a penetration tester. Me and my mentor got to the client's office and our first order of business was to bypass the NAC system. Searching for a printer or other similar ...
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2 votes
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How does the "Control Frame Attack" bypass the MAC-Randomization on Smartphones?

In this Study regarding MAC-Randomization of different Smartphone Manufactures on page 15 the so called Control Frame Attack is described. I'm not sure whether I understand this correctly. Are they ...
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Could my pc's mac address be guessed and thereby stored by websites? [duplicate]

If I don't use a vpn, should I disable IPv6 to avoid my pc's mac address be guessed ? While paying online, once I saw a bill that included my IPv6, should I be concerned at all?
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MAC randomization for Bluetooth?

Companies, governments, etc. can track Bluetooth and WiFi network scans passively by looking at a same MAC address over space and time (Bluetooth/WiFi Identity tracking in public spaces - How to ...
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Why are USPS, the Washington Post, Oracle, and MailChimp blocking our home network from accessing their sites?

The problem seems to be that our home network is being blocked from high-profile sites that have really good security measures in place. For example, when I go to the Washington Post's website I get ...
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Logged into same network of residence, owner knows my Mac address.. what can they see? [closed]

Logged into same network of residence, owner knows my Mac address.. what can they see? They are techy and know my Mac address for my phone and PC. Can they see text message to and from me? My email? ...
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Can I see the MAC address of a router on an encrypted Wi-Fi network?

Say that I am within range of a Wi-Fi network that is encrypted using WPA2, but I don't know the password. Is it possible for me to learn the MAC address of the Wi-Fi router that is broadcasting the ...
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2 votes
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How does Gmail detect if my email account is accessed from another computer?

How does Gmail detect when my mail is accessed from another computer? Does it keep track of my MAC address to check whether a new device is used? I think it doesn't have anything to do with IP address....
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Is it enough to change only the MAC address of a VM to enhance anonimity?

I'm learning a bit about Kali linux, and I heard that it is a good practice to change the MAC address of your Kali VM so that no particular action can be traced to you (at the link level). However, as ...
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Use MAC Address to Identify Laptop Model? [closed]

Is it possible to use the first 6 characters (D8:9D:67) of a MAC address to learn the model/version of the device? For example, this MAC address belong to Hewlett Packard. But they manufacture ...
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why MAC address can not be used as session identifier instead of session ID? [duplicate]

why MAC address can not be used as session identifier instead of session ID? why the physical address (MAC address) cannot be used as a session identifier during the communications between servers ...
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Why do people redact MAC addresses? [duplicate]

What are the security implications of sharing a MAC address online? How important is it really, to redact this information; and why? I see it a lot, and I'm in the habit of doing it myself. 1. ...
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Verify my scenario of Internet infrastructure security [closed]

I have read a bit about Internet infrastructure recently. I have figured out how the IT crimes are easy to cover and quite confident way to perform any attack without traces. I got suprised that is ...
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Bypassing blacklisted MAC address filtering (that prevents certain MAC address to access router)

PROBLEM OVERVIEW I have a access to a large WLAN network (in a hostel); where lot of students have access to wifi password. So, to prevent sharing this password to others I used MAC address white-list ...
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Can Whatsapp be MAC spoofed if the victim's device isn't on the same local network as the hacker's device?

I realize that MAC addresses are only used to tell different devices apart if they are on the same local network. So, what if they're not? Is MAC spoofing in Whatsapp still possible? Even if the ...
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13 votes
3 answers
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Bypass MAC address internet time filtering? [closed]

My brother disabled my internet access for my devices from 10pm - 6am. The internet on his devices still work 24/7. I am still connected to the WiFi but there is no internet access because he did a ...
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