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FTP, also known as file transfer protocol, is a process that organizations can use to transfer large and/or sensitive files from one location to another. Secure “versions” (or alternatives) of FTP (SFTP, FTPS) are especially useful in the defense, legal, healthcare, manufacturing, and finance industries. However, FTP generally speaking, is used in almost every industry where the sharing of information is necessary. But what is FTP exactly? At FTP today, we have a team of dedicated secure file transfer experts who are always available to talk about your organization and its file transfer needs. Continue reading for a deep dive into FTP, and contact us if you would like to schedule a time to discuss FTP and what it could mean for your business. FTP HistoryThe concept of FTP dates back to April 1971, when Abhay Bhushan first wrote the specification for file transfer protocol — which he published in RFC 114. In its earliest years, FTP ran on NCP, which stands for Network Control Program, and facilitated the protocol stack on computers hosting the ARPANET (the predecessor to the modern-day internet). FTP moved to Transmission Control Protocol/Internet Protocol (TCP/IP) in the 80s, where it remains today. In the 1990s, new standards enabled firewall-friendly FTP (in 1994), proposed security extensions (1998) and added support for IPv6 while also defining a new version of passive mode (1998). As you’ll discover below, FTP and its capabilities have come a long way in the modern age. How Does FTP WorkIn simplest terms, FTP is a method for briefly connecting computers, called “clients” and “servers,” in order to facilitate the transfer of files from one to the other. When you think of servers, you most likely think of web servers that hold webpage-related files for the internet or of file servers on your office network. FTP servers are similar to web servers, but they are different in that they hold files for upload and download rather than files to be retrieved as web pages through browsers. Websites operate on HTTP/HTTPS rather than FTP, which we’ll address later in this post. FTP servers facilitate both uploads and downloads. Files are transferred from local computers or servers to remote FTP servers during uploads. Files are transferred from FTP servers to local servers or computers during downloads. Metaphorically speaking, the local systems can be thought of as the senders of letters and the receivers of letters. FTP as a protocol would be like a mail truck used to deliver letters. And the FTP server can be thought of as the post office or mail distribution center. For example, imagine Company A needs to send a large amount of files to Company B. Company A will upload the files to an FTP server, and then Company B will transfer the data from the FTP server to its own computer. How do computers find the FTP servers they're looking for? All FTP servers have an address. The address may look like a web address (starting with ftp://), or it may look more like the string of numbers that represent an IP address. While some FTP servers do not require login credentials to gain access, called an “anonymous” connection, most FTP servers have in place security features that require a username and password for access. Is Your SFTP Provider Protecting Your External Files?Your current SFTP provider could be putting your business at serious risk. Take this short quiz and find out if you are practicing secure procedures in order to protect your company’s critical information.FTP SecurityWe’ve already noted that FTP was not originally created for security. In fact, FTP as originally conceived was highly vulnerable to brute-force attacks, port stealing, username enumeration and other threats. But, today, there are secure versions of FTP that make it safe as the protocol of choice for organizations that need to store and transfer even the most sensitive of files and information. FTPS builds on the FTP foundation through the addition of a transport security layer, or TLS, which replaced the now deprecated secure sockets layer (or SSL). There are two types of FTPS: implicit FTPS and explicit FTPS. Explicit FTPS is the newer and most commonly used protocol. When using explicit FTPS, a connection is established on the same control port as FTP (port 21), and then an SSL/TLS connection can be required by the client or required by the server. The TLS/SSL connection is what encrypts and secures the files. Additional ports will open for data to pass, as port 21 is for the issuing of commands only. The FTP client and FTP server will negotiate which ports need to be used to complete the file transfers. SFTP is another option for file transfer protocol security. SFTP uses a secure shell (Or SSH) data stream to protect the connection during file transfers. Unlike FTPS, which requires many ports to complete file transfers, SFTP uses only port 22 for both commands and data. Both FTPS and SFTP are commonly used protocols for securely transferring files. The best option for your organization will depend on the security controls you need and compatibility with other systems. Many lean toward SFTP because it only requires the single port to be open. The Benefits of FTP & Related ProtocolsFTP and the more secure protocols mentioned in the section above have become widely accepted for file transfer in the 21st century. Why has FTP become the standard? Because the benefits of using FTP are well-known and widely appreciated by individuals and organizations that need to transfer sensitive files in a secure manner. Here’s a look at the 6 primary benefits of FTP: 1. CapacityWe've all been caught in a situation where a large file simply won't attach and send via email. FTP solves this problem by facilitating the transfer of large individual files, as well as large amounts of smaller files. If you choose a method of transferring files that does not have the capacity you need, you will find that transfers and connections often fail. Naturally, this is highly inefficient for any organization that needs to transfer large files on a regular basis. 2. SecurityWhile FTP as conceived in 1971 did have security vulnerabilities, there are now encrypted file transfer protocols that layer on top of FTP the security needed for sensitive files. More specifically, FTPS and SFTP are options for organizations that need highly secure file-transfer capabilities. 3. ControlMost modern FTP providers offer administrative dashboards that give users a high level of control over their files. These controls allow administrators to grant permissions on a user-by-user basis to upload, download, share, edit, and even delete files stored on FTP servers. 4. EfficiencyWhen you identify and implement the right FTP solution for your organization, you can establish a highly efficient file transferring workflow that all team members understand and use. Again, many organizations are regularly handling large and sensitive files. By using FTP to establish an efficient workflow, these organizations are able to move faster, do more, and generally enhance their operations. 5. RedundancyThe best FTP providers also provide regular server backups so that your sensitive files always remain safe in case of a natural disaster or another incident that compromises one server. FTP backup servers are typically located in completely different geographical regions. This ensures that there's no interruption in an organization’s access to their files. 6. AutomationAutomation is likely the most significant benefit of using these protocols. Transfers can be easily configured and scheduled to happen with no human intervention. For example, it’s possible to synchronize local and remote folders every 5 minutes, 24/7. FTP vs. HTTPFTP and HTTP are both transfer protocols that play important roles in the digital world. But there are key differences between FTP vs. HTTP that are important to know. You likely know HTTP as the protocol used to retrieve files on the internet for viewing within browsers. HTTP is perfect for this activity, because it efficiently transfers small files — like webpages. FTP, as noted above, is ideal for transferring much larger files. On the technical side, HTTP uses TCP port 80, and FTP uses TCP port 21. There's typically no authentication required with HTTP, which is why you are able to access files on the internet without logging in each time. Conversely, FTP almost always requires user and password authentication. Lastly, HTTP creates a data connection only, while FTP creates both data and control connections. As we've written before, both FTP and HTTP play important roles as transfer protocols. That said, anytime there's a need for the transfer of large files or large amounts of files, FTP is the only efficient, reliable solution. FTP Terms to KnowThe FTP world is full of terms and acronyms that can sound similar and that often confuse users. To help you better understand and distinguish between these terms and acronyms, here’s an FTP glossary to reference:
Discover More With FTP TodayThe FTP world is extensive and can be complicated if you try to build and implement your own system. At FTP Today, we provide a number of different options for organizations that need to store and share sensitive files. You can get up and running with FTP Today at a fraction of the cost it would take to create your own system. Ready to see FTP in action? Get in touch with us to schedule time for a brief demo of FTP Today and a discussion of your organization and its file-sharing needs.
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