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Manpage of twoftpd-xfer
twoftpd-xfer
Section: User Commands (1)
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NAME
twoftpd-xfer - TwoFTPD file transfer back-end.
SYNOPSIS
twoftpd-xfer
DESCRIPTION
twoftpd-xfer
reads FTP request from the network and executes file
transfers based on those requests.
Before doing anything,
twoftpd-xfer
changes directory to the authenticated user's home directory, changes
the root directory to that directory, and drops all root priviledges.
ENVIRONMENT
- AUTHENTICATED
-
If set (typically by
twoftpd-auth
after successfully completing authentication), the startup banner will
use code
230,
indicating that authentication was successful. Otherwise, the startup
banner will use code
220,
which is the normal initial connection banner.
- BANNER
-
If set, the contents of this variable will be sent as extra responses when
the server starts.
- CHROOT
-
If set, change the root directory to the user's home directory through
the OS chroot syscall.
- CONNECT_TIMEOUT
-
The maximum number of seconds to wait for a data channel connection to
complete. If not set, it defaults to the value of
$TIMEOUT.
- GID
-
Numerical group ID number to change to at program startup.
- GIDS
-
Optional comma-seperated list of numerical group IDs to set up as the
supplementary group IDs.
- GROUP
-
Group name to use in long listings for files owned by
$GID.
If not set, defaults to
mygroup.
- HOME
-
Directory to switch to on program startup.
- LOCKHOME
-
If set (and neither
CHROOT
nor
SOFTCHROOT
are set), all accesses to files and paths outside of
HOME
will be forbidden.
- LOGREQUESTS
-
If set, all requests from the client will be logged.
- LOGRESPONSES
-
If set, all responses to the client (after login) will be logged.
- MESSAGEFILE
-
If set, the contents this file will be automatically sent as extra
responses to the client whenever the server enters a directory
(including at startup).
- NODOTFILES
-
If set, all listings will exclude all files starting with a period,
and it will not be possible to do any file access (including storing
or retrieving) to any file starting with a period. This may be useful
for anonymous FTP servers.
- SESSION_TIMEOUT
-
The maximum number of seconds to allow a single session to last.
- SOFTCHROOT
-
If set, and
CHROOT
is not set, the server emulates the effect of a chroot without
actually effecting a chroot. This eliminates the system-enforced
barrier provided by the chroot, but allows for things like symlinks
outside of the home directory.
- TCPLOCALIP
-
The IP to use when creating PASV connections.
Normally, this is set by
tcpserver.
- TCPREMOTEIP
-
The source IP to use when creating PORT connections.
Normally, this is set by
tcpserver.
- TIMEOUT
-
The maximum number of seconds to wait for command input or
connections.
- UID
-
Numerical user ID number to change to at program startup.
- USER
-
Owner name to use in long listings for files owned by
$UID.
NOTES
You will need to set the umask to an appropriate value before running
this program.
The
twoftpd-anon
program functions identically to this program, with the exception of
having no file modification capabilities.
The
twoftpd-drop
program is a similarly restricted program, that can only create new
files (no overwriting, modifying, or listing existing files).
Index
- NAME
-
- SYNOPSIS
-
- DESCRIPTION
-
- ENVIRONMENT
-
- NOTES
-
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Time: 22:19:53 GMT, April 04, 2011