This is our old Q&A Site. Please post any new questions and answers at


To start with, lets say I'm a novice, Im a coder but not a hacker, I have read a few articles that mentioned wreshark but cannot find an answer to the following :

Can Wireshark sniff out a Lan mac address from outside that network ? Thanks, Mark

asked 05 Mar '15, 10:12

22oakdene's gravatar image

accept rate: 0%

Short answer: no (almost). A little more background: when you say "outside the network" I interpret that as "behind a router". This router limits where Ethernet frames can go, hence behind a router the node's MAC address is no longer visible.

But I also say 'almost'. Sometimes a MAC address comes up in an higher layer protocol, for instance if the router also functions as DHCP relay. Or if you use certain types of IPv6 addresses.

Have a look at the online TCPIP guide if you would like to know more.

permanent link

answered 05 Mar '15, 10:57

Jaap's gravatar image

Jaap ♦
accept rate: 14%

Hi Jaap, Thanks for the response, allow me to add more info. I have recently read an article online that there is a keygen for "Sky" routers [Incase you are outwith the UK, Sky is one of if not, the largest ISP providers here] Meaning the keygen requires the SSID and MAC address and this uses the same algorithm that Sky used to create the password - meaning if someone can sniff your MAC address, they can generate the password that it was shipped with !!

Of course, I can change the Password, SSID and hide the network but I'm curious if this is actually possible ?, i.e. is this a real threat ??

So, How does someone sniff a MAC address if they are not in the network. Follow ?

(06 Mar '15, 08:41) 22oakdene
Your answer
toggle preview

Follow this question

By Email:

Once you sign in you will be able to subscribe for any updates here



Answers and Comments

Markdown Basics

  • *italic* or _italic_
  • **bold** or __bold__
  • link:[text]( "title")
  • image?![alt text](/path/img.jpg "title")
  • numbered list: 1. Foo 2. Bar
  • to add a line break simply add two spaces to where you would like the new line to be.
  • basic HTML tags are also supported

Question tags:


question asked: 05 Mar '15, 10:12

question was seen: 2,353 times

last updated: 06 Mar '15, 09:43

p​o​w​e​r​e​d by O​S​Q​A