network protocol analyzer

[rebin1988]

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.

find wireshark installer in the below link:
http://www.wireshark.org/download.html

don't forget thanks and reputation:handshake

[simonchiang]

Wireshark and Sniffer Pro are also good tools for network analysis.
but Sniffer Pro is a payment software.

[hassanhija]

Can I use wireshark for the simulation

[RodrigoCarvalho]

I heard about that Wireshark has it's own programming language.
Is that true?

Thanks