Professional Windows Server 1002003 Security A Technical Reference [Electronic resources] نسخه متنی

Transfers files to or from a computer running
the FTP Server service.

Syntax

ftp [-v] [-n] [-i] [-d] [-g] [-s:filename] [-a] [-w:windowsize] [hostname]

Options

-a

Uses any local interface for the endpoint of the FTP data connection.
(The FTP data connection is used to transfer files and is different
from the FTP control connection, which sends FTP commands between the
client and server.)

-d

Enables debugging mode, which displays all FTP commands sent between
the client and server.

-g

Disables globbing (filename expansion) so that wildcards can be used
within local paths and filenames without being interpreted by the
shell.

-i

Disables interactive prompting when multiple files are being
transferred.

-n

Disables autologon to establish a control connection with the remote
host but nothing else.

-s:filename

Executes a series of FTP commands stored in a text file as a batch
job.

-w:windowsize

Specifies the amount of data that can be transferred before requiring
that the receiving end issue a confirmation. The default transfer
buffer size is 4,096 bytes.

-v

Disables showing responses of remote FTP connections.

hostname

Identifies the computer name (DNS or NetBIOS name) or IP address of
the remote computer you want to connect to using FTP (this must be
the last parameter on the line).

Commands

You can select from a whole separate set of FTP-specific commands
when you run ftp in interactive mode. Here are
some of the more commonly used:

!

Escapes from an interactive FTP session to the command shell

cmd.exe in order to execute the command, then
returns to the FTP session.

ascii

Sets file transfer type to ASCII for transferring text files. ASCII
is the default type, the other being binary.

binary

Sets file transfer type to binary for transferring binary files such
as image files and Word documents.

bye, close, or quit

Terminates an FTP session with the remote server and exits the FTP
shell.

cd remotedirectory

Changes to the specified directory on the remote server.

delete remotefilename

Deletes the file from the current directory on the remote server.

dir [remotedirectory] [localfilename]

Displays a directory listing of the specified remote directory (or
the current remote directory if none is specified). If a filename is
specified, the listing is saved with this name on the local machine
instead of being displayed.

disconnect

Terminates an FTP session with the remote server, but stays within
the FTP shell.

get remotefilename [localfilename]

Transfers the specified file from the remote server to the local
machine, renaming it as well if
localfilename is specified.

hash

Displays one hash character (#) each time 2,048
bytes are transferred (useful for displaying the progress when
downloading large files).

help [

command ]

Lists the available FTP commands or displays a short description of
the specified command.

lcd localdirectory

Changes to the specified directory on the local computer.

ls [remotedirectory] [localfilename]

Same as dir earlier in this list.

mget remotefilenames

Gets multiple files (see get earlier in this list).

mput localfilenames

Puts multiple files (see put later in this list).

open hostname [port]

Opens an FTP connection to the specified remote computer.
hostname can be a computer name (DNS or
NetBIOS name depending on the network) or IP address.
port is required only if the remote server
is listening on a different TCP port than the standard FTP port,
which is 21.

prompt

Toggles prompting for confirmation by user (default is on).

put localfilename [remotefilename]

Transfers the specified file from the local machine to the remote
server, renaming it as well if
remotefilename is specified.

pwd

Displays the name of the current directory on the remote server.

remotehelp [

command ]

Displays a list of FTP commands understood by the remote server or
describes a particular command.

user username

Logs on to the remote server as username
and then prompts for a password.

Examples

Run FTP in interactive mode:

C:\>ftp
ftp>

Open a session with an FTP server:

ftp> open 172.16.11.104
Connected to 172.16.11.104.
220 test Microsoft FTP Service (Version 5.0).

Log on to the server as anonymous:

User (172.16.11.104:(none)): anonymous
331 Anonymous access allowed, send identity (e-mail name) as password.
Password: ********
230 Anonymous user logged in.

Display the current directory on the server:

ftp> pwd
257 "/" is current directory.

List the contents of the current directory on the server:

ftp> ls
200 PORT command successful.
150 Opening ASCII mode data connection for file list.
hello.txt
226 Transfer complete.
ftp: 11 bytes received in 0.04Seconds 0.28Kbytes/sec.

Download the file

hello.txt from the server to
the client:

ftp> get hello.txt
200 PORT command successful.
150 Opening ASCII mode data connection for hello.txt(12 bytes).
226 Transfer complete.
ftp: 12 bytes received in 0.00Seconds 12000.00Kbytes/sec.

Escape from the FTP shell momentarily and run the command
type C:\hello.
txt on the client, which should display the
contents of the text file if it's successfully
downloaded from the server:

ftp> !type C:\hello.txt
Hello there!ftp>

Note that the file contains the line of text "Hello
there!"

Close the connection with the server and terminate the interactive
FTP session:

ftp> quit
221
C:\>

Notes

• The ftp command is a client, as opposed to an FTP
  service or daemon, which resides on the server.

• WS2003 includes an FTP Server service as part of its Internet
  Information Services (IIS). By default, the home or root directory of
  this service is mapped to the directory
  

  C:\Inetpub\ftproot on the server.

• FTP is inherently insecure because it transmits passwords in clear
  text.

To use ftp in batch mode, do the following:

1. Go through an interactive FTP session, and copy it to a text editor
   such as Notepad.

2. Edit out the responses, leaving only the commands.

3. Use the -s switch to run the batch file with
   ftp.

See Also

TCP/IP