How to create a packet sniffer with Matlab?

Hi all,

I'm a bit new with the use of Matlab for networking. I was wondering how can create passavie sniffer with Matlab. I have a Server that I want to analye using Matlab' sniffer.

I would be glad to get your help. Also, please keep in mind that I don't have much experience in Matlab so write your answer in a way I could understand.

Thankx in advance,

Ilan.

[Udaya RONGALA]

I am also having the exact same question!! Did you succed in finding a way for this problem? Thanks.

Answer 1

[Jason Ross]

Why not use a tool like WireShark?

I'm not saying you couldn't build a packet sniffer in MATLAB, but if you have work to get done right now, there are tools out there already that do this already, and do it quite well.

[Ilan]

i want to analyze the data in matlab and I want it to be done automatic. If you know any ways or functions that could help get started I will be glad.

Answer 2

[Walter Roberson]

You cannot create a packet sniffer in MATLAB unless you call out to external routines that do all the work. Routines such as PNet, included in http://www.mathworks.com/matlabcentral/fileexchange/345-tcpudpip-toolbox-2-0-6 -- though I have not looked at that one closely enough to know whether it can be used for sniffing.

To make a sniffer, you need privileged access to the RAW socket interface; you can have a look at C code source examples for Linux over here

[Ilan]

I took a look at PNet and from what I figure it's for sending/receiving data. But... all I want to do is just "listen" to a cretain port on my computer. I have no wishes to connect to a remote computer. I aslo have no need in doing anything to those packages. Do you know any external routines or functions in Matlab that could help me with that?

[Walter Roberson]

http://www.wireshark.org/docs/wsdg_html_chunked/ChSrcObtain.html