Before you choose a secure file transfer solution, it is best to have a basic understanding of the protocols involved, which make file transfers safe and reliable. 1.FTP The FTP file transfer protocol has existed for decades and has been widely used in the past. TCP provides reliable data transfer through message sequence confirmation and message retransfer mechanisms; at the same time, various widely used operating systems have built-in TCP protocol stacks, and POSIX standards define the TCP Socket standard API interface, these factors have contributed to TCP's widespread success on a global scale. However, this transfer protocol, which was designed more than 20 years ago, has become increasingly unsuitable for the rapidly developing network environment and the requirements of new applications, especially when there are a certain packet loss and delay on the network transfer path. Transfer throughput declines sharply, and path bandwidth is often not used effectively, resulting in slow transfer speed, long transfer time, and poor transfer experience. 2.FTPS FTPS is an extension protocol that adds Transport Layer Security and Secure Socket Layer encryption protocol support to the commonly used file transfer protocol . FTPS is a secure file transfer protocol that allows you to communicate with trading partners, Clients and users transfer files securely. These transfers can be authenticated through methods supported by FTPS . 3.SFTP In the computer field, it is designed by the Internet Engineering Task Force to provide secure file transfer capabilities through the expansion of SSH-2, but it can also be used by other protocols. Even though the IETF is in the network draft data stage, this protocol is described in the SSH-2 document, it can be used in many different applications, such as secure file transfer in Transport Layer Security and transfer information management in virtual private network applications Program. This agreement is assumed to be executed in a secure channel, such as SSH, the server has authenticated the client, and the client user can use the agreement. Compared with the earlier SCP protocol that only allows file transfer, SFTP allows a wider range of operations on remote files ─ which is more like a remote file system protocol. A comparison of the capabilities of an SFTP client and SCP includes additional replies to interrupt transfers, directory listings, and remote file movement. 4.SCP The old protocol, SCP or Secure Copy Protocol, is a network protocol that supports file transfer between hosts on the network. It is similar to FTP, but SCP supports encryption and authentication functions. 5.HTTP & HTTPS As the backbone of the World Wide Web, HTTP is the basis of data communication. It defines the message format of the communication between the web browser and the web server and defines how the web browser should respond to web requests. HTTP uses TCP as the underlying transfer and is a stateless protocol. This means that each command is executed independently, and the receiver does not retain session information. Https is a secure version of HTTP in which communications are encrypted by TLS or SSL. 6.AS2, AS3, and AS4 AS2, AS3, and AS4 are popular protocols used to send and protect critical file transfers. AS2 is used to transmit sensitive data safely and reliably on the Internet. AS2 uses digital certificates and encryption standards to protect critical information transmitted between systems, networks, and locations. AS 2 messages can be compressed, signed, encrypted, and sent through a secure SSL tunnel. AS3 is a standard and can be used to transfer almost any file type. It provides a layer of security for data transfer through digital signature and data encryption. It was originally created to transfer data files, such as XML and EDI business-to-business data files. Unlike AS2, AS2 is a defined transfer protocol, and AS3 is a message standard that focuses on how to format a message when it is sent from the server to the server. Once the AS3 message is synthesized, it can be transmitted via any other protocol . As long as both parties can access the location where the message has been placed. AS4 is an agreement that allows companies to exchange data securely with their partners. It is based on what was originally set up by AS2, but works with web services and provides improved delivery notifications. As a business-to-business standard, AS4 helps make file exchange on the Internet safe and simple. 7.PeSIT PeSIT protocol is an end-to-end file transfer protocol developed by the French Interbank Telecommunications System Economic Interest Group . It is rarely used in North America and is mainly used to meet European banking standards and to transfer communications to and from European banks. Knowing these 7 file transfer protocols, you probably know how to choose a protocol to ensure the secure transfer of your files.
FTP protocol originated from the early days of network computing. A few government and university researchers explored the value of connecting computers together, so they created FTP protocol to promote the movement of files in the network. Why do so many people still use FTP now? Because it is perfect and embedded in most operating systems today. Although FTP is provided free of charge, it does not mean that it has no cost. IT teams spend too much time managing and maintaining FTP servers and their users, which could have been devoted to more important IT projects and plans. Security Many changes have taken place in FTP since it was invented, especially the security and confidentiality. FTP predates the Internet as we know it today, but it is not designed to transfer files safely. When companies use it to send files containing personally identifiable information or patient data, compliance does not exist. FTP has no resistance to many types of attacks, and the user name and password credentials are sent in clear text. It is not difficult for hackers to extract information and access the entire server containing company data. Ease-of-use FTP is mainly an IT tool. Many IT professionals still like to run FTP in command line mode, and take pride in managing servers through text commands, but for ordinary knowledge workers, FTP operation is too technical. FTP client software can help, but it is only an overlay, which will not increase security or reduce manual management of FTP server. The complaints that FTP administrators often hear are managing users and their credentials, and knowing which files should be saved on the server and which files can be deleted. This causes the FTP server to become very bloated. As time goes by, the files on the FTP server continue to accumulate, and the situation will get worse and worse. What transfer tools do we use now? Today's file transfer function has surpassed FTP many times, providing encrypted communication, reporting and tracking functions, integrating with enterprise applications, and being more intuitive. Today's file transfer solutions can meet today's growing demand for secure file transfer. It's time to adopt a more modern and powerful data transfer solution. As time goes by, your company will benefit from this, operate within the scope of compliance standards, and become more efficient after the final rest of FTP.
File Transfer Protocol Server is a computer that provides file storage and access services on the Internet. They provide services in accordance with the FTP protocol. FTP, the file transfer protocol is a set of standard protocols for file transfer on the network, using the client/server model. FTP is a protocol specifically used to transfer files. FTP is a client/server system. Users use a client that supports the FTP protocol to connect to a server program on a remote host. The user issues a command on the client, and the remote host server executes the command issued by the user after receiving the command, and returns the execution result to the client. Simply put, the user sends a command to the server, asking the server to send a file to the user. The server responds and sends the file to the client. The user receives the file and places it in the user's working directory. This process is carried out by the FTP server. Exchange of documents. How Does FTP Server Work? FTP is based on the TCP protocol service, which is a file transfer protocol on the Internet. By default, two ports 20 and 21 are used, a data port and a command port, and port 20 is a data port for file transfer between the client and the server data flow. Port 21 is a command port used to transmit control flow and accept related FTP commands and parameters issued by the client. The FTP client sends a service request to the FTP server in the computer network. The FTP server receives and responds to the FTP client's request and provides the FTP client with the required file transfer service. According to the provisions of the TCP protocol, FTP servers use well-known port numbers 20 and 21 to provide services, and FTP clients use temporary port numbers to send requests. The FTP protocol specifies different well-known port numbers for control connections and data connections, the well-known port number for control connections is 21, and the well-known port number for data connections is 20. The FTP protocol uses a continuous connection communication method, and the maintenance time of the control connection it establishes is usually long. After explaining the main connection method of the working principle of FTP, then explain the two types of data connection establishment in the working principle of FTP: active mode and passive mode. The active mode of FTP is that the client connects to the well-known port of the FTP server from any unprivileged port, that is, port 21. After receiving the command, the FTP server connects to another temporary port of the client from the data port and returns data; passive mode means that the client opens two arbitrary non-privileged ports to submit commands, and the FTP server passively opens any non-privileged ports to send commands to the client After the client receives the command, it initiates a connection to the FTP server from the local port to establish a transmission data channel. In this mode, the command connection and the data connection are initiated by the client to solve the problem of the server initiating the connection to the client. Generally speaking, if we take the server as the criterion. Active mode: The server initiates a connection to the client from port 20. Passive mode: The server passively waits for a client to initiate a connection on a port within a specified range. The realization goal of FTP is to realize the safe sharing of file data, that is, the computer client can connect to the FTP servers around the world through the FTP client and the Internet to achieve file data sharing and resource sharing. Realize information interaction, that is, other computer clients can access the FTP server built on your computer through the Internet, so that your information can be spread to all parts of the world. Carry out effective data transmission. Files can be exchanged between computers of different types, different systems, and different formats. Do you know the FTP server now? For related articles, you can click here to learn more.
File Transfer Protocol is a standard Internet protocol used to transfer files between computers on the Internet via a TCP/IP connection. FTP is a client-server protocol, the client will request the file, and the local or remote server will provide the file. The end-user computer is usually called the localhost, and it connects to a remote host through the Internet, which is the second computer running FTP software. How Does FTP Work FTP is a client-server protocol that relies on two communication channels between the client and the server: a command channel used to control the conversation and a data channel used to transfer file content. The client initiates a dialogue with the server by requesting to download the file. Using FTP, the client can upload, download, delete, rename, move, and copy files on the server. Users usually need to log in to the FTP server, although some servers can make some or all of the content available without logging in. This is called anonymous FTP. FTP sessions work in passive or active mode. Inactive mode, after the client requests to start a session through the command channel, the server will start a data connection with the client and start transmitting data. In passive mode, the server instead uses the command channel to send the information needed to open the data channel to the client. Because passive mode enables clients to initiate all connections, it works well between firewalls and network address translation gateways. Users can use FTP through a simple command-line interface or a dedicated graphical user interface . Web browsers can also be used as FTP clients. What is FTP for? FTP is a useful tool to move information from the computer you are using to the server hosting the website. For example, if you want to install WordPress on a web server, you need FTP to copy files. Sometimes used as a way to share files. One person can upload the file to an FTP server and then share the link to the file with another person. In the era of easy-to-use cloud services , this usage has become less common, but some people prefer to host the file on a home server and use FTP to enable it. FTP is the simplest and earliest format that can quickly move files from one device to another. Its origins can be traced back to 1971, and it was originally created and distributed by Abhay Bhushan. In the 1980s, the FTP format was updated to the TCP/IP version associated with the server. FTP uses two basic channels for operation. The command channel carries information about the task itself-which files to access, whether commands are being registered, etc. Then, the data channel transmits the actual file data between the devices. These FTP connections can also have active and passive modes. Active mode is the most common mode, which allows open communication between the server and the device through two channels, and the server actively establishes a connection by approving the data request. However, this mode may be interrupted due to firewalls and similar issues, so there is also a passive mode where the server will pay attention but not actively maintain the connection so that another device can do all the work. Security FTP was originally defined in 1971, before the definition of TCP and IP, and has been redefined many times-for examples, using TCP / IP , and then using Internet Protocol version 6 , . In addition, because there is no need to consider security in the definition, it has been extended several times to improve security: for example, a version encrypted by TLS connection or one that can be used with Secure File Transfer Protocol Version SSH file transfer protocol. FTP does not encrypt traffic, and individuals can capture data packets to read usernames, passwords, and other data. FTP may still be vulnerable to brute force attacks, packet capture, spoofing, FTP bounce, and other attacks . As mentioned earlier, FTP itself does not provide other security mechanisms besides providing passwords. If the data you send is not considered sensitive and/or limited to transferring files within the network, FTP can be used very well. If sensitive data is being transferred outside the corporate network, please do not use this simplest form of FTP. Raysync FTP acceleration product is a software that can directly connect to the existing FTP server system. Which can improve transmission speed by 10 to 100 times? It is able to highly integrate with the existing server architecture to achieve high-speed file transfer. Which file transfer solution you use depends only on your budget, the content to be transferred, and the type of encryption required.
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