The FTP client and server communicate while being unaware that TCP manages every session. Later a separate data connection is established to transfer files and folders. Such servers are known as anonymous FTP servers. But some servers make all of their content available without any credentials. A control connection requires a login to establish a connection. The FTP client first builds a control connection request to the server port 21. As HTTP is built for Websites, FTP is optimized for large file transfers between computers. Simply put, it’s a way to share files between connected computers. FTPįTP is a protocol used by computers to share information over the network. Before we dig deep into the captured packet analysis, we will begin with a brief understanding of the protocol. In this article, we will learn how FTP works and examine FTP Wireshark captures.
The previous article has provided you with an in-depth understanding of the Wireshark filters, OSI layers, ICMP, and HTTP packet analysis.
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