Mac Address Over Internet

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I want to send text to a Computer that I have its Mac Address, Over the internet...
So any Help?

Posted 18-Oct-13 5:14am

Hadi Ayash

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2 solutions

Solution 2

Also, MAC addresses are NOT unique. They must be unique inside a network segment, but there can be multiple identical MACs all over the network. There is no way to uniquely identify a machine over the internet with a MAC address.

I think you're going to have to study up computer networking and TCP/IP, routing, the OSI model, ... to understand how this stuff works before writing network specific applications.

Posted 18-Oct-13 5:58am

Dave Kreskowiak

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OriginalGriff · Accepted Answer · 2013-10-18T05:23:00

Solution 1

You can't.
MAC addresses are not broadcast over the internet, nor are they used for addressing over the internet. They are used to identify equipment within a network up to the router (or other LAN / WiFi controller) and are converted to IP addresses by the DHCP controller. THe IP address is used from that point on (and may not leave the local area either: your LAN IP address is not the same as your Internet IP address)

Posted 18-Oct-13 5:23am

OriginalGriff

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Hadi Ayash 18-Oct-13 12:06pm

Then how can I send text to another computer over the internet besides using a website? Is there any way?

OriginalGriff 18-Oct-13 12:12pm

Only if it has a fixed IP address (or you have established a session of some form with it). Even then, there is a lot of reading involved - have a quick google and you'll see what I mean.

MSDN do have a sample peer-to-peer chat app though:
http://msdn.microsoft.com/en-us/library/bb690929%28VS.90%29.aspx

It's pretty simple via a website or web service though, I'd have thought.

Hadi Ayash 18-Oct-13 12:22pm

So what is the fastest way send a text? By the way, you said "If it has a fixed IP address" isnt the external IP address fixed?! If it is a website, I don't want to spend my time learning asp.net right now... So do you know a website I can use.
You help will be appreciated,
Thanks in advance.
:)

OriginalGriff 18-Oct-13 14:01pm

"isnt the external IP address fixed?"
Good grief no!
A "fixed" IP address is called a Static Address, and most hosting services charge you extra for that! If you connect at home, go to http://www.myipaddress.com and make a note of the numbers. Turn your modem off, and back on again to "break" the ADSL connection, then go there again. You will almost certainly get a different address.

Sending Texts is a different subject altogether - but Google for "SMS message C#" and you should find what you want.