wireshark - network analysis tool

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A small Guided Tour within the world of Network Analysis Tools and WireShark in particular

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INTRO TO NETWORK ANALYSERSWireshark

Varun M DeshpandeMSRIT, ISE

NETWORK ANALYSIS

What ? A program that monitors the data traveling through the network passively Receives a copy of packets that are sent/received from/by applications

and protocols running on your machine

Why ? Capture, Decode and Analyze Network Traffic What is the network traffic pattern How is the traffic being shared between nodes

Who? System Admins Malicious Individuals

How ? Network Analysis tools like Wireshark, Ethereal, Windump etc

Copyright Mukthi 9.11

Copyright Mukthi 9.11

WIRESHARK

Formerly called Ethereal An open source packet analyzer

free with many features Decodes over 750 protocols Compatible with many other sniffers Plenty of online resources are available Supports command-line and GUI interfaces

TSHARK (offers command line interface) has three components Editcap Mergecap text2pcap

Copyright Mukthi 9.11

5

Wireshark – Application for Sniffing Packets

WinPcap – open source library for packet capture Operating System – Windows & Unix/Linux

Network Card Drivers – Ethernet/WiFi Card

Ethernet Card

Copyright Mukthi 9.11

6

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Details of the selected packet (#215)

Raw data (content of packet # 215)

Packet #215: HTTP packet

Copyright Mukthi 9.11

7

CS4

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Filtering HTTP packets only

Copyright Mukthi 9.11

THANK U

varundesh@gmail.comhttp://Varunmdeshpande.com

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