Packet analyzing with Wireshark - basic of packet analyzing

1. Packet Analyzing with
Wireshark
By : Dhananja Kariyawasam
https://www.elitehacz.blogspot.com
https://www.youtube.com/DhananjaKariyawasam

2. What is a Packet Analyzer ?
 A packet analyzer (also known as a network analyzer, protocol analyzer or
packet sniffer—or, for particular types of networks, an Ethernet sniffer or wireless
sniffer) is a computer program or piece of computer hardware that can intercept
and log traffic that passes over a digital network or part of a network.
--Wiki Answer
https://en.wikipedia.org/wiki/Packet_analyzer

3. What is Packet Analyzing ?
 “Basically, the process of capturing and interpreting live data as it flows across a
network in order to better understand what is happening on that network”
 To perform that part, we use protocol analyzer or packet sniffer.
 It captures all raw data that going thought the wire and wireless.

4. Why we need Packet Sniffers ?
 To analysis typical network problems
 Identify the unauthorized traffic.
 To measure user’s bandwidth utilization
 Broadcast and multicast traffic analysis
 To learn unsecure vulnerability
 Client-Server communication testing
 Etc…

5. How to select a Sniffing tool ?
 Supported protocols
 User-friendliness
 Cost
 Program support
 Operating system support