178 lines
5.4 KiB
Groff
178 lines
5.4 KiB
Groff
|
||
|
||
FTPD(8) Minix Programmer's Manual FTPD(8)
|
||
|
||
|
||
NAME
|
||
ftpd, in.ftpd, setup.anonftp - DARPA Internet File Transfer Protocol
|
||
server
|
||
|
||
SYNOPSIS
|
||
ftp stream tcp nowait root /usr/sbin/in.ftpd in.ftpd
|
||
tcpd ftp /usr/sbin/in.ftpd
|
||
|
||
DESCRIPTION
|
||
Ftpd is the DARPA Internet File Transfer Prototocol server process. The
|
||
server uses the TCP protocol and listens at the port specified in the
|
||
``ftp'' service specification; see services(5).
|
||
|
||
The ftp server currently supports the following ftp requests; case is
|
||
not distinguished.
|
||
|
||
Request Description
|
||
ABOR abort previous command
|
||
ACCT specify account (ignored)
|
||
ALLO allocate storage (vacuously)
|
||
APPE append to a file
|
||
CDUP change to parent of current working directory
|
||
CWD change working directory
|
||
DELE delete a file
|
||
HELP give help information
|
||
LIST give list files in a directory (``ls -lA'')
|
||
MKD make a directory
|
||
MODE specify data transfer mode
|
||
NLST give name list of files in directory (``ls'')
|
||
NOOP do nothing
|
||
PASS specify password
|
||
PASV prepare for server-to-server transfer
|
||
PORT specify data connection port
|
||
PWD print the current working directory
|
||
QUIT terminate session
|
||
RETR retrieve a file
|
||
RMD remove a directory
|
||
RNFR specify rename-from file name
|
||
RNTO specify rename-to file name
|
||
STOR store a file
|
||
STOU store a file with a unique name
|
||
STRU specify data transfer structure
|
||
TYPE specify data transfer type
|
||
USER specify user name
|
||
XCUP change to parent of current working directory
|
||
XCWD change working directory
|
||
XMKD make a directory
|
||
XPWD print the current working directory
|
||
XRMD remove a directory
|
||
|
||
|
||
|
||
1
|
||
|
||
|
||
|
||
FTPD(8) Minix Programmer's Manual FTPD(8)
|
||
|
||
|
||
The remaining ftp requests specified in Internet RFC 959 are recognized,
|
||
but not implemented.
|
||
|
||
The ftp server will abort an active file transfer only when the ABOR
|
||
command is preceded by a Telnet "Interrupt Process" (IP) signal and a
|
||
Telnet "Synch" signal in the command Telnet stream, as described in
|
||
Internet RFC 959.
|
||
|
||
Ftpd interprets file names according to the ``globbing'' conventions used
|
||
by csh(1). This allows users to utilize the metacharacters ``*?[]{}~''.
|
||
|
||
Ftpd authenticates users according to three rules.
|
||
|
||
1) The user name must be in the password data base, /etc/passwd, and
|
||
not have a null password. In this case a password must be provided
|
||
by the client before any file operations may be performed.
|
||
|
||
2) The user name must not appear in the file /etc/ftpusers.
|
||
|
||
3) If the user name is ``anonymous'' or ``ftp'', an anonymous ftp
|
||
account must be present in the password file (user ``ftp''). In
|
||
this case the user is allowed to log in by specifying any password
|
||
(by convention this is given as the client host's name).
|
||
|
||
In the last case, ftpd takes special measures to restrict the client's
|
||
access privileges. The server performs a chroot(2) command to the home
|
||
directory of the ``ftp'' user. In order that system security is not
|
||
breached, it is recommended that the ``ftp'' subtree be constructed with
|
||
care; the following rules are recommended.
|
||
|
||
~ftp)
|
||
Make the home directory owned by ``ftp'' and unwritable by anyone.
|
||
|
||
~ftp/bin)
|
||
Make this directory owned by the super-user and unwritable by
|
||
anyone. The program ls(1) must be present to support the list
|
||
commands. This program should have mode 111.
|
||
|
||
~ftp/etc)
|
||
Make this directory owned by the super-user and unwritable by
|
||
anyone. The files passwd(5) and group(5) must be present for the ls
|
||
command to work properly. These files should be mode 444.
|
||
|
||
~ftp/pub)
|
||
Make this directory mode 755 and owned by the super-user. Create
|
||
directories in it owned by users if those users want to manage an
|
||
anonymous ftp directory.
|
||
|
||
|
||
|
||
|
||
|
||
2
|
||
|
||
|
||
|
||
FTPD(8) Minix Programmer's Manual FTPD(8)
|
||
|
||
|
||
~ftp/pub/incoming)
|
||
Optionally create this directory for anonymous uploads. Make it
|
||
mode 777. The FTP daemon will create files with mode 266, so remote
|
||
users can write a file, but only local users can do something with
|
||
it.
|
||
|
||
The script setup.anonftp can be used to create or check an anonymous FTP
|
||
tree.
|
||
|
||
SEE ALSO
|
||
ftp(1).
|
||
|
||
BUGS
|
||
The anonymous account is inherently dangerous and should avoided when
|
||
possible.
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
3
|
||
|