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FTP, SCP and SFTP

 

The FTP protocol which runs on port 20 for data connection and port 21 for command connection is a file transfer protocol. However as well as transferring files in the clear, there is much vulnerability within FTP protocol.

Some web download sites make use of the FTP utility within client web browsers by allowing them to download from their FTP servers using a common browser such as Internet Explorer. However due to weaknesses and flaws within FTP two alternatives to FTP are SFTP and SCP, both utilise the security of the secure SSH protocol.

Another alternative is utilising the TLS\SSL protocol for secure file transfer as well.