What is ftp server

FTP is a protocol used to transfer files via the internet between a server sender and a client receiver. An FTP server is a computer that offers files available for download via an FTP protocol, and it is a common solution used to facilitate remote data sharing between computers.

The files are generally uploaded to the server from a personal computer or other removable hard drives such as a USB flash drive and then sent from the server to a remote client via the FTP protocol. Although the FTP server actually sends files over the internet, it generally acts as the midpoint between the real sender of a file and its recipient.

The recipient must access the server address, which can either be a URL e. FTP servers usually listen for client connections on port 21 since the FTP protocol generally uses this port as its principle route of communication. FTP ports 20 and 21 must both be open on the network for successful file transfers.

The FTP server allows the downloading and uploading of files. With an FTP connection, it is possible to resume an interrupted download that was not successfully completed; in other words, checkpoint restart support is provided.

Once accepted by the FTP server, an acknowledgment is sent to the client and the session can start. The FTP server can provide connection to users without login credentials; however, the FTP server can authorize these to have only limited access. FTP servers can also provide anonymous access. This access allows users to download files from the servers anonymously but prohibits uploading files to FTP servers. One computer acts as the server to store information and the other acts as the client to send or request files from the server.

The FTP protocol typically uses port 21 as its main means of communication. An FTP server will listen for client connections on port If security is not a concern, FTP Server software is an easy and inexpensive way to accomplish this. If you have remote employees who need to upload non-confidential information such as timesheets, for example , or if you want to allow your customers to download white papers and documentation, an FTP Server works well for this purpose.

Then, if you need to restore your data, you can do so by coordinating with your FTP vendor. Knowing a little bit more about what FTP servers are and the benefits that come with using them allows you to make the best decisions possible about your data. Storing your data in secure locations gives you the confidence that it will be safe from disaster or compromise. Be sure you choose to partner with an FTP vendor who can offer you all the benefits listed above.

Find out more about your top file-sharing options. A software and IT geek since a young age, Martin has successfully led his companies through the digital age by spotting market niches and filling them with quality IT services.

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Choosing the right solution doesn't have to be difficult. We compared 5 of the SFTP solutions to make your decision easier.