Shulou(Shulou.com)06/02 Report--

This article mainly introduces the differences between sftp and ftp, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

Difference: FTP transfers files based on TCP and does not provide any secure channel to transfer files between hosts, while SFTP encrypts files based on SSH, which provides a secure channel for transferring files between hosts. 2. FTP passwords and data are sent in plain text format; SFTP is transmitted in binary form.

What is FTP?

FTP (File Transfer Protocol, File transfer Protocol) is one of the protocols in the TCP/IP protocol group.

The FTP protocol consists of two components, one is the FTP server and the other is the FTP client. The FTP server is used to store files, and users can use the FTP client to access the resources located on the FTP server through the FTP protocol.

When developing a website, the FTP protocol is usually used to upload the web page or program to the Web server. In addition, because of the high transmission efficiency of FTP, this protocol is generally used when transferring large files on the network.

What is SFTP?

SFTP is a secure file transfer protocol, a secure method of transferring files over a network; it ensures that data is securely transferred using private and secure data streams.

SFTP requires that client users must be authenticated by the server, and data transfer must take place through a secure channel (SSH), that is, no plaintext passwords or file data are transferred. It allows you to perform various operations on remote files, a bit like the remote file system protocol. SFTP allows recovery from operations such as pausing transfer, directory listing, and remote file deletion.

The difference between SFTP and FTP

SFTP and FTP are very similar, both support batch transfer (transfer multiple files at a time), folder / directory navigation, file movement, folder / directory creation, file deletion, etc. But there are still differences, so let's take a look at the difference between SFTP and FTP.

1. Safe channel

FTP does not provide any secure channel to transfer files between hosts, while the SFTP protocol provides a secure channel for transferring files between hosts on the network.

2. The protocol used

FTP uses the TCP / IP protocol. SFTP, on the other hand, is part of the SSH protocol, which is a kind of remote login information.

3. Link mode

FTP uses the control connection on TCP port 21 to establish the connection. SFTP, on the other hand, transfers files through a secure connection established between the client and the server through the SSH protocol (TCP port 22).

4. Security

FTP passwords and data are sent in plain text format, which in most cases are unencrypted and insecure. On the other hand, SFTP encrypts the data before it is sent, and it is transmitted in binary form, which cannot be read "as is" and is more secure.

FTP transfers files based on TCP and transmits user information and data in clear text.

SFTP encrypts transfer files based on SSH, which has high reliability and can be continued at breakpoints.

Thank you for reading this article carefully. I hope the article "what is the difference between sftp and ftp" shared by the editor will be helpful to you. At the same time, I also hope you will support us and pay attention to the industry information channel. More related knowledge is waiting for you to learn!

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.