FTP (File Transfer Protocol), SFTP, TFTP Explained.

What is FTP, SFTP, & TFTP? These are protocols that are used to transfer files over a network. FTP (File Transfer Protocol) is the language that computers use to transfer files over a TCP/IP network.

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As a side note to this, there is also FTPS, known as File Transfer Protocol Secure. Yes, there are two secure variations of FTP: SFTP and FTPS. FTPS uses SSL/TLS, and the biggest difference between Secure File Transfer Protocol (SSH) and File Transfer Protocol Secure (SSL/TLS) is that the latter is able to make use of TLS/SSL certificates issued from a CA in order to transfer data, making it very secure. I always remember the difference like this: HTTPS = HTTP over SSL/TLS, FTPS = FTP over SSL/TLS, LDAPS = LDAP over TLS/SSL. It all is based on where the letter 'S' is placed. SFTP uses Secure Shell as a way of transmitting data, using terminal software such as PuTTY, SecureCRT etc.


TFTP on Windows is sometimes blocked, so if you are uploading files to a TFTP server and it is not working, you should definitely try to either disable the firewall completely for a couple of seconds, or explicitly allow rules for UDP port 69, whichever you prefer.




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