Log into the FTP site for Centers for Disease Control and Prevention (CDC) with user anonymous and no password. Open another terminal window to access an external ftp site. Start a Wireshark capture for the enp0s3 interface.Ĭ.
The ampersand (&) sends the process to the background and allows you to continue to work in the same terminal. Open a terminal window and start Wireshark. Start and log into the CyberOps Workstation VM. In Part 1, you use Wireshark to capture an FTP session and inspect TCP header fields. Instructions Part 1: Identify TCP Header Fields and Operation Using a Wireshark FTP Session Capture If using a packet sniffer is an issue, the instructor may wish to assign the lab as homework or perform a walk-through demonstration.
It is recommended that permission be obtained before running Wireshark for this lab. Instructor Note: Using a packet sniffer, such as Wireshark may be considered a breach of the security policy of the school. In Part 2 of this lab, you will use Wireshark to capture and analyze UDP header fields for TFTP file transfers between two Mininet host computers. The terminal command line is used to connect to an anonymous FTP server and download a file. In Part 1 of this lab, you will use the Wireshark open source tool to capture and analyze TCP protocol header fields for FTP file transfers between the host computer and an anonymous FTP server. UDP provides transport layer support for the Domain Name System (DNS) and TFTP, among others. For example, TCP is used to provide transport layer support for the HyperText Transfer Protocol (HTTP) and FTP protocols, among others. Both protocols support upper-layer protocol communication. Two protocols in the TCP/IP transport layer are TCP (defined in RFC 761) and UDP (defined in RFC 768).
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