3Com WX3000 Series Operation Manual page 543

Enabling an FTP server
Follow these steps to enable an FTP server:
To do...
Enter system view
Enable the FTP server function
Only one user can access the device at a given time when the latter operates as an FTP server.
Operating as an FTP server, the device cannot receive a file whose size exceeds its storage space.
The clients that attempt to upload such a file will be disconnected with the FTP server due to lack of
storage space on the FTP server.
To protect unused sockets against attacks, the device provides the following functions:
TCP 21 is enabled only when you start the FTP server.
TCP 21 is disabled when you shut down the FTP server.
Configuring connection idle time
After the idle time is configured, if the server does not receive service requests from a client within a
specified time period, it terminates the connection with the client, thus preventing a user from occupying
the connection for a long time without performing any operation.
Follow these steps to configure connection idle time:
To do...
Enter system view
Configure the connection idle
time for the FTP server
Specifying the source interface and source IP address for an FTP server
You can specify the source interface and source IP address for an FTP server to enhance server
security. After this configuration, FTP clients can access this server only through the IP address of the
specified interface or the specified IP address.
Use the command...
system-view
ftp server enable
Use the command...
system-view
ftp timeout minutes
1-3
Remarks
—
Required
Disabled by default.
Remarks
—
Optional
30 minutes by default