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What is Wireshark


Wireshark is the world’s foremost and widely-used network protocol analyzer. It lets you see what’s happening on your network at a microscopic level and is the de facto (and often de jure) standard across many commercial and non-profit enterprises, government agencies, and educational institutions. Wireshark development thrives thanks to the volunteer contributions of networking experts around the globe and is the continuation of a project started by Gerald Combs in 1998.

Wireshark has a rich feature set which includes the following:

Deep inspection of hundreds of protocols, with more being added all the timeLive capture and offline analysisStandard three-pane packet browserMulti-platform: Runs on Windows, Linux, macOS, Solaris, FreeBSD, NetBSD, and many othersCaptured network data can be browsed via a GUI, or via the TTY-mode TShark utilityThe most powerful display filters in the industryRich VoIP analysisRead/write many different capture file formats: tcpdump (libpcap), Pcap NG, Catapult DCT2000, Cisco Secure IDS iplog, Microsoft Network Monitor, Network General Sniffer® (compressed and uncompressed), Sniffer® Pro, and NetXray®, Network Instruments Observer, NetScreen snoop, Novell LANalyzer, RADCOM WAN/LAN Analyzer, Shomiti/Finisar Surveyor, Tektronix K12xx, Visual Networks Visual UpTime, WildPackets EtherPeek/TokenPeek/AiroPeek, and many othersCapture files compressed with gzip can be decompressed on the flyLive data can be read from Ethernet, IEEE 802.11, PPP/HDLC, ATM, Bluetooth, USB, Token Ring, Frame Relay, FDDI, and others (depending on your platform)Decryption support for many protocols, including IPsec, ISAKMP, Kerberos, SNMPv3, SSL/TLS, WEP, and WPA/WPA2Coloring rules can be applied to the packet list for quick, intuitive analysisOutput can be exported to XML, PostScript®, CSV, or plain text



Wireshark is a network packet analyzer. A network packet analyzer will try to capture network packets and tries to display that packet data as detailed as possible.

You could think of a network packet analyzer as a measuring device for examining what’s happening inside a network cable, just like an electrician uses a voltmeter for examining what’s happening inside an electric cable (but at a higher level, of course).

In the past, such tools were either very expensive, proprietary, or both. However, with the advent of Wireshark, that has changed. Wireshark is available for free, is open source, and is one of the best packet analyzers available today.




Network administrators use it to troubleshoot network problems

Network security engineers use it to examine security problems

QA engineers use it to verify network applications

Developers use it to debug protocol implementations

People use it to learn network protocol internals




The following are some of the many features Wireshark provides:

Available for UNIX and Windows.

Capture live packet data from a network interface.

Open files containing packet data captured with tcpdump/WinDump, Wireshark, and many other packet capture programs.

Import packets from text files containing hex dumps of packet data.Display packets with very detailed protocol information.

Save packet data captured.Export some or all packets in a number of capture file formats.

Filter packets on many criteria.

Search for packets on many criteria.Colorize packet display based on filters.Create various statistics.



If you want to learn more see this link for reference :


https://www.wireshark.org/


https://www.wireshark.org/docs/wsug_html_chunked/ChapterIntroduction.html


An Ethical hacker should know the penalties of unauthorized hacking into a system. Read more at: Legality and Ethics


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