What is Wireshark?
This tool is a network packet analyzer and this kind of tool will try to capture networks packets used for analysis, network troubleshooting, education, software and communications protocol development and display the packet data obtained as detailed as possible. Formerly named Ethereal, it was renamed to Wireshard in May of 2006 due to trademark issues. Wireshark is a cross platform that now uses the Qt widget in current releases to implement its user interface. If you know tcpdump, Wireshark is very similar to it, but has a graphical front-end and some integrated filtering and sorting options.
Wireshark support promiscuous mode that lets the user put network interface controllers into that mode, for them to see all traffic visible on that interface, not only the traffic directed to one of the interface’s configured addresses and broadcast/multicast traffic. But, when in promiscuous mode capturing with a packet analyzer on a port on a network switch, not all traffic through the switch is sent to the port where the capture is made, so capturing in this mode is not necessarily enough to see all network traffic. Various network taps such as Port Mirroring extend capture to any point on the network. Simple passive taps are greatly resistant to tampering. Wireshark 1.4 and later on GNU/Linux, BSD, and OS X, with libpcap 1.0.0 or later can also put wireless network interface controllers into monitor mode. When a remote computer machine captures packets and transmit the captured packets to a machine running Wireshark using the the protocol used by OmniPeek or the TZSP protocol, those packets are dissected by Wireshark, so it can analyze packets captured on a remote machine at the time that they are captured. In Wireshark, there are color codes and the users sees packets highlighted in black, blue and green. It helps users in identifying the types of traffic at one glance. Black color determines TCP packets with problems. Blue colors is the DNS traffic while Green is the TCP traffic.
Is Wireshark Free?
Wireshark is an open source and free packet analyzer. You can go to its website (https://www.wireshark.org/download.htmlZ) and download the installer that is compatible with your system.
Does Wireshark Work on all Operating Systems?
Wireshark uses pcap to capture packets and runs on OSX, GNU/Linus, Solaris, Microsoft Windows and other operating systems that are Unix like.
What are the Typical Uses for Wireshark?
People use Wireshark to troubleshoot problems with their network, examine problems with security, protocol implementations debugging and learn more about the network protocol internals.