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Listen to thirdparty programs network activity... possible ?

Hi

Iam currently trying to replace a 3party piece of software, it communicates with some computers on the network using i asume standard TCP/IP protocol, is it in anyway possible to figure out how they are communcating and what they are sending ?

Thanks
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mSchmidt
Asked:
mSchmidt
1 Solution
 
David LeeCommented:
Hi mSchmidt,

Yes.  Get a sniffer or packet capturing program and capture all the traffic to/from the computer this app is on.  Netmon can do it.

Cheers!
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mSchmidtAuthor Commented:
Netmon seems only to show your active connections... not show what is actually being transferred...
It might be a wrong netmon.. could you suggest a program with an URL... :)

Thanks
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David LeeCommented:
I don't know what you mean by "only to show your active connections".  Netmon shows everything, every packet sent.  It can get overwhelming in very short order.  The Netmon I'm speaking of is Microsoft's Netmon.  I believe it comes with Windows 2000 and XP, but am not sure of that.  It isn't installed by default though.  There's a more powerful version of Netmon that comes with Microsoft's SMS.
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pseudocyberCommented:
Alternatively download Ethereal (free and popular) from http://www.ethereal.com/download.html.  You can run it on the machine you want to capture traffic on.  Or, if you want to capture traffic on another device, you have to either have some managed switches which you can mirror/span ports - where you send traffic to a different port for the purposes of doing a packet capture - or you have to have the capture device (your sniffer) and the target in a shared hub so that traffic is retransmitted to all ports.
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drandelmCommented:
I would probably use Ethereal http://www.ethereal.com/ to analyze what is going on.
Cheers,
-David
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pseudocyberCommented:
Hey, thanks. :)
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