![]() ![]() ![]() Step-2: The application gateway asks about the remote host with which the user wants to establish a connection. Step-1: User contacts the application gateway using a TCP/IP application such as HTTP. For example, the proxy might accept get commands and reject put commands. The proxy server would simulate both sides of this protocol exchange. Some system admin blocks put command but permits get command, list only certain files, or prohibit changing out of a particular directory. The FTP commands like getting the file, putting the file, listing files, and positioning the process at a particular point in a directory tree.
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