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Below is a list of FTP commands that may be sent to a File Transfer Protocol (FTP) server. It includes all commands that are standardized by the Internet Engineering Task Force (IETF) in RFC 959, plus extensions.
Service available, closing control connection. This may be a reply to any command if the service knows it must shut down. 425: Can't open data connection. 426: Connection closed; transfer aborted. 430: Invalid username or password 431: Need some unavailable resource to process security. 434: Requested host unavailable. 450: Requested file ...
One is that the FTP client and FTP server use the PASV command, which causes the data connection to be established from the FTP client to the server. [14] This is widely used by modern FTP clients. Another approach is for the NAT to alter the values of the PORT command, using an application-level gateway for this purpose.
Protocols such as FTP use out-of-band control. FTP sends its control information, which includes user identification, password, and put/get commands, on one connection, and sends data files on a separate parallel connection. Because it uses a separate connection for the control information, FTP uses out-of-band control.
TightVNC uses so-called "tight encoding" of areas, which improves performance over low bandwidth connection. It is effectively a combination of the JPEG and zlib compression mechanisms. [ 5 ] [ 6 ] It is possible to watch videos and play DirectX games through TightVNC over a broadband connection, albeit at a low frame rate.
Virtual Network Computing logo VNC in KDE 3.1. VNC (Virtual Network Computing) is a graphical desktop-sharing system that uses the Remote Frame Buffer protocol (RFB) to remotely control another computer. It transmits the keyboard and mouse input from one computer to another, relaying the graphical-screen updates, over a network. [1]
RealVNC is a company that provides remote access software. Their VNC Connect software consists of a server (VNC Server) and client (VNC Viewer) application, which exchange data over the RFB protocol to allow the Viewer to control the Server's screen remotely.
RealVNC VNC Server/Viewer: Proprietary, RFB (VNC), SSH: RealVNC: 2002 2024-01-11, Server 7.9.0, Viewer 7.9.0 Proprietary: No No Remmina: RDP, RFB (VNC), SPICE, XDMCP, SSH, EXEC: Originally written by Vic Lee 2009 2022-12-20, 1.4.29 GPL-2.0-or-later: Yes Yes Remote Desktop Services/Terminal Services: RDP: Microsoft: 1998 2016 Proprietary: Yes ...