Common FTP, FTPS & SFTP Error Codes and What They Mean
When working with file transfer protocols like FTP, FTPS, and SFTP, servers send and receive various return codes during sessions. Some codes indicate successful file transfers, while others signal errors and require further action. And when things go wrong, understanding the meaning behind the sever return codes can save you and your team time, money and frustration.
Both solutions provide access to permission defined folders using protocols such as HTTPS, FTP and SFTP. Both have audit trails and the ability to send one-time links, for guest users to be able to download particular files. With so much overlap, what is the difference?
Generally the larger our systems get, the more of an administrative burden they become. More user accounts need creating for access; permissions and controls need to be set correctly for security purposes; and something or someone needs to keep a track of the changes taking place.
It may be obvious to some that FTP (File Transfer Protocol) is an insecure protocol; and that its continued use for transferring sensitive or personal is inappropriate. Yet, its use for that very purpose still continues according to Rapid7, creating an unnecessary risk.
When it comes to old technology lurking around in your network, there is as good a chance as any other that an FTP or SFTP server is part, having been a staple of most IT teams for a very long time.
For a protocol with nearly fifty years on the clock, FTP can sometimes be a lot more complicated than most would assume. In particular, there is often a strong misunderstanding of the differences between active and passive FTP sessions, which can lead to confusion around port numbers in use and how the protocol really works. So what are the differences between active and passive FTP; and what are the advantages and disadvantages of using either mode?
FTP has been around for as long as I can remember; and according to Rapid7 is still in widespread use today with over 21 million FTP servers on present on the internet today. Sadly this cornerstone of file transfer is woefully unprepared for today's world of data breaches and targeted hacking campaigns as it provides no protection for files in transmission or when stored on disk. Meaning that files are transferred in the clear, making them easy targets...
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