![]() ![]() It captures packets based on a wide range user-specified criteria, and can save the traffic in different formats. ![]() In this lab, you will use several popular open-source applications to examine network traffic: Tcpdump is the most widely used UNIX/Linux tool to record network traffic. Because attackers use sniffers for network reconnaissance and to intercept transmitted credentials and data, learning about the capabilities and limitations of packet sniffers is an important facet of understanding the security risks. 1 Packet Sniffing with Wireshark and Tcpdump Capturing, or sniffing, network traffic is invaluable for network administrators troubleshooting network problems, security engineers investigating network security issues, developers debugging communication protocol implementations, or anyone trying to learn how their networks work.
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