5/2/2023 0 Comments Bbedit save through interarchyThe FTP client would respond with the PASV command. Passive mode: The FTP server opens a random port (port # > 1023) and sends the server's IP address and the port number to the FTP client and then the server listens. The server connects back to the client in this scenario. ![]() Three different transfer modes dictate how the data stream is set up:Īctive mode: The FTP client opens a random port (port # > 1023) and sends the random port number over the control stream using the PORT command with the IP and port number as argument. The next step in the process is the actual file transfer, which requires a different socket connection called the data stream. This two-way communication where commands are passed is called the control stream and occurs in plain text. The initial greeting consists of the FTP client sending a request via a command to the server and the server sending back a response to either accept or reject the connection. The FTP server uses port 21 (also called the command port) to listen for a connection from an FTP client and port 20 to send data from (also called the data port) but we'll see that the data port can be redirected to a different/random port. Networked hosts create connections to each other in order to transfer data between a client machine and a server. FTP is an interactive protocol used for file transfer over any TCP supported network. FTP BasicsĪs a brief overview, let's cover some FTP basics to bring ourselves up to speed. The personal choice of an FTP client is based on how stable the app is, how securely it handles data transfers, and how well the features of the app meet your current needs. ![]() We'll look at a mix of open source, and shareware/commercial software available. This article will cover a few of the most popular FTP clients for Mac OS X. Educational Institution and Student Discountsįor Mac OS X Roundup of some popular FTP client apps.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |