文件传输协议 (FTP) 和安全文件传输协议 (SFTP) 之间的区别

FTP 代表文件传输协议。它是一种用于将文件从一台主机传输或复制到另一台主机的协议。但是在不同的主机或系统上收发文件时，可能会出现文件名不同、文件目录不同等问题。而在FTP中，没有提供安全通道来在主机或系统之间传输文件。它用于端口号 21。

SFTP 代表安全文件传输协议。它是一种提供安全通道的协议，用于将文件从一个主机传输或复制到另一个主机或系统。 SFTP在SSH协议下建立控制连接，使用在22号端口。

它们之间有一些区别，如下所示：

S.NO	FTP	SFTP
1.	It stands for File Transfer Protocol.	It stands for Secure File Transfer Protocol.
2.	In FTP, secure channel is not provided to transfer the files between the hosts.	In SFTP, secure channel is provided to transfer the files between the hosts.
3.	It is a part of TCP/IP protocol.	It is a SSH protocol.
4.	It usually runs on port no-21.	It runs on port no-22.
5.	It establishes the connection under TCP protocol.	It establishes the control connection under SSH protocol.
6.	It does not encrypt the data before sending.	It encrypted data before sending.
7.	It works on direct method for file transfer.	It works on tunelling method for transferring of files.
8.	It makes uploading and downloading of files without any security.	It maintains full security of the data by using SSH keys.