sftp-server - SFTP server subsystem


sftp-server [-ehR] [-f log_facility ] [-l log_level ] [-u umask ]


is a program that speaks the server side of SFTP protocol to stdout and expects client requests from stdin. is not intended to be called directly, but from sshd(8) using the .Cm Subsystem option.

Command-line flags to should be specified in the .Cm Subsystem declaration. See sshd_config(5) for more information.

Valid options are:

-tag -width Ds
-e Causes to print logging information to stderr instead of syslog for debugging.
-f log_facility Specifies the facility code that is used when logging messages from . The possible values are: DAEMON, USER, AUTH, LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7. The default is AUTH.
-h Displays usage information.
-l log_level Specifies which messages will be logged by . The possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG, DEBUG1, DEBUG2, and DEBUG3. INFO and VERBOSE log transactions that performs on behalf of the client. DEBUG and DEBUG1 are equivalent. DEBUG2 and DEBUG3 each specify higher levels of debugging output. The default is ERROR.
-R Places this instance of into a read-only mode. Attempts to open files for writing, as well as other operations that change the state of the filesystem, will be denied.
-u umask Sets an explicit umask(2) to be applied to newly-created files and directories, instead of the user's default mask.

For logging to work, must be able to access .Pa /dev/log . Use of in a chroot configuration therefore requires that syslogd(8) establish a logging socket inside the chroot directory.


sftp(1) , ssh(1) , sshd_config(5) , sshd(8) .Rs .%A T. Ylonen .%A S. Lehtinen .%T "SSH File Transfer Protocol" .%N draft-ietf-secsh-filexfer-00.txt .%D January 2001 .%O work in progress material


first appeared in .Ox 2.8 .


.An Markus Friedl Aq