(A) FTP Profile
1, FTP (File Transfer Protocol) File Transfer Protocol, is a TCP-based protocols, client / server model. , Users can upload or download files and other operations in an FTP server via FTP protocol. Although there are many now available for download via the HTTP protocol site, but due to good control of the FTP protocol can assign the number of users and broadband, quickly and easily upload and download files, FTP server networks have become the preferred file upload and download. At the same time, it is also an application, users can connect via its own computer servers around the world all running FTP protocol, a large number of programs and access information on the server. FTP service function is to achieve complete remote file transfer. |
2, F TP is used in one of the Internet service is widely used to transfer files between two computers, yes. It can be set according to actual needs of each user's permissions, and also offers cross-platform feature that can achieve FTP client and server on UNIX, Linux and Windows operating systems, cross-platform file transfer between each other . Therefore, FTP service is one resource sharing networks often used. |
3, FTP server (File Transfer Protocol Server) is to provide file storage and computer access services on the Internet, they provide services in accordance with the FTP protocol. FTP is the File Transfer Protocol (File Transfer Protocol). As the name suggests, it is designed to protocol for transferring files. Simply put, the server that supports FTP protocol FTP server |
(B) FTP Features
(A) two parallel connection using the FTP: control and data connections. Control connection between two host transfer control command, such as user identity, password, directory change command and the like. Data connection for transmitting data only. |
(B) during a session, FTP server must maintain the state of the user, i.e., a user control and a connection can not be disconnected. In addition, when the user activity in the directory tree, the server must track the user's current directory, so, FTP limits the number of concurrent users. |
(Iii) supporting the FTP file transfer in either direction. When the user establishes a connection with a remote computer, the remote user may obtain a file may be a local file to a remote machine. |