Wireshark is the world’s foremost network protocol analyzer. It lets you see what’s happening on your network at a microscopic level. It is the de facto (and often de jure) standard across many industries and educational institutions.
INSTALL
First, we install Wireshark from the terminal.
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sudo apt–get install wireshark
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Source-
http://www.dickson.me.uk/2012/09/17/installing-wireshark-on-ubuntu-12-04-lts/
CAPTURE
Type wireshark from terminal.
Start capture by looking at Capture Tab and interfaces
Export data as a csv
ANALYZE
Import file in R to analyze
(from http://www.statmethods.net/input/importingdata.html )
DECISION STATS 