Overview
This lecture introduces FTP (File Transfer Protocol), exploring its client and server roles, file transfer commands, and the differences between anonymous and non-anonymous access.
FTP Overview
- FTP stands for File Transfer Protocol, used for efficient data transfer across networks.
- FTP operates at the application layer of the network protocol stack.
- FTP allows file transfers between a client and a remote server.
FTP Commands
- Common FTP commands include PWD (print current directory), LIST (show files/directories), CD (change directory), MKDIR (make new directory), and file copy commands.
- FTP commands can be typed directly at a command line interface with correct syntax.
FTP Client Software
- FTP clients are separate software applications that interact with the FTP protocol, making file transfers more user-friendly.
- The FTP client interface typically displays connection details at the top, showing server IP and login (non-anonymous) or using anonymous access.
- The client displays the local machine's file structure and the remote server's file structure side by side.
File Transfers: Uploading and Downloading
- Downloading means transferring a file from the server to the client machine.
- Uploading refers to moving a file from the client to the remote server.
- Most FTP clients allow files to be transferred via drag-and-drop between the local and remote directories.
Status and Progress Monitoring
- FTP client software provides windows to show file transfer progress and status messages.
- The status window displays the actual FTP commands being issued during file transfers.
Key Terms & Definitions
- FTP (File Transfer Protocol) — A protocol for transferring files between computers on a network.
- FTP Client — Software that interfaces with the FTP protocol to facilitate file transfers.
- FTP Server — A remote machine configured to store and provide files via FTP.
- Anonymous Access — Connecting to an FTP server without providing user credentials.
- Non-Anonymous Access — Logging into an FTP server with a username and password.
- Uploading — Sending files from the client to the server.
- Downloading — Retrieving files from the server to the client.
- PWD — FTP command to print the current working directory.
- LIST — FTP command to list files and directories in the current directory.
Action Items / Next Steps
- Familiarize yourself with a basic FTP client interface.
- Practice uploading and downloading files using FTP client software.