3/16/2023 0 Comments Mac terminal ftp on watch![]() ACK replies) have been omitted to simplify things. Here's a simplified explanation on how an active mode connection is carried out, summarized in two steps. Active FTP was introduced in the early days of computing when mainframes were more common and attacks to information security were not as prevalent. Active Mode FTPĪmong the two connection modes, active mode is the older one. We'll include client-side FTP ports in our discussion in a short while. Note that the FTP ports we are referring to up to this point are only the ports on the server side. But if you choose passive mode, then the port that will be used will be a random port. If you choose active mode, then the data channel will normally be FTP port 20. The FTP port you'll use for the data channel, on the other hand, can differ depending on which data transfer mode you choose. Unless you configure your FTP server differently, you will normally set your command channel to use FTP port 21. ![]()
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