For unix like environments, another library by the name libcap is available. When you install Wireshark you will receive a prompt to install the WinPcap component, which is nothing but the windows version of pcap. So it can only capture the packets on the networks supported by pcap. Basically, pcap is a library of information about various protocols, their packet structure, and different messages passed in those protocols. It allows the user to see all traffic being passed over the network. Wireshark puts your network card into promiscuous mode, which basically tells it to accept every packet it receives. It is used for network troubleshooting, analysis, software and communications protocol development, and education. ![]() Wireshark is a free packet sniffer computer application. This article is focused on a few things about the Wireshark tool which is used for packet capture in the networks.
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