FTP Module

File Transfer Protocol Configuring the FTP module Providing Access to Personal Web Sites The CommuniGate FTP module implements an FTP server for TCP/IP networks. The FTP protocol allows an FTP client application to connect to the Server computer and specify the user (Account) name and the password. If access to the specified user Account is granted, the client application can retrieve and update data inside that Account Personal Web Site.

File Transfer Protocol

The File Transfer Protocol allows client computers to work with files stored on remote servers. A computer running an FTP client application connects to the server computer and provides account (user) name and the password. If access to the specified user account is granted, the client application sends protocol commands to the FTP server. These protocol commands tell the server to list all files in the current directory, to change the current directory, to retrieve, upload, rename, and remove files stored on the FTP server.

The CommuniGate Pro FTP module supports various Internet standards (RFCs).

The CommuniGate Pro FTP module supports the REST command and it can resume broken file transfer operations.

Configuring the FTP module

Use a Web browser to configure the FTP module. Open the Access page in the WebAdmin Settings section.

Serving FTP Clients
Log: Crashes OnlyFailuresMajor & FailuresProblemsLow LevelAll Info   Channels: off1351025501002505001000 listener

Log

Use this setting to specify what kind of information the FTP module should put in the Server Log. Usually you should use the Major (password modification reports) or Problems (non-fatal errors) levels. But when you experience problems with the FTP module, you may want to set the Log Level setting to Low-Level or All Info: in this case protocol-level or link-level details will be recorded in the System Log as well. Since the FTP clients send passwords in the clear text format, setting the Log to these setting for long periods of time can become a security hole if the Log file can be copied from the Server computer.

The FTP module records in the System Log are marked with the FTP tag.

channels

When you specify a non-zero value for the TCP/IP Channels setting, the FTP module creates a so-called "listener" on the specified port(s). The module starts to accept FTP connections from FTP clients. This setting is used to limit the number of simultaneous connections the FTP module can accept. If there are too many incoming connections open, the module will reject new connections, and the users should retry later.
If the number of channels is set to zero, the FTP module closes the listener and releases (unbinds from) the TCP port(s).

listener

By default, the FTP module Listener accepts clear text connections on the TCP port 8021. Follow the listener link to tune the FTP Listener.
If the server computer does not have any other FTP server software running, you may want to switch the FTP Listener to the port 21 (the standard FTP port).

Providing Access to Personal Web Sites

As soon as an FTP user is authenticated, the current directory is set to the topmost directory of the user Personal Web Site. The FTP module allows a user to upload, download, rename and remove Personal Web Files. The FTP module also allows a user to create, remove and rename directories inside the Account Personal Web Site.