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SFTP-SERVER(8)							SFTP-SERVER(8)

NAME
       sftp-server - SFTP server subsystem

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

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

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

       Valid options are:

       -e     Causes  sftp-server  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 sftp-server usage information.

       -l log_level
	      Specifies	 which messages will be logged by .  The possible val‐
	      ues are: QUIET, FATAL,  ERROR,  INFO,  VERBOSE,  DEBUG,  DEBUG1,
	      DEBUG2,  and  DEBUG3.   INFO  and	 VERBOSE log transactions that
	      sftp-server 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	sftp-server  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,  sftp-server  must  be  able  to	access
	      /dev/log.	 Use of sftp-server in a chroot	 configuration	there‐
	      fore  requires that syslogd(8) establish a logging socket inside
	      the chroot directory.

SEE ALSO
       sftp(1), ssh(1), sshd_config(5), sshd(8)

       S. Lehtinen and T. Ylonen,  SSH	File  Transfer	Protocol,  draft-ietf-
       secsh-filexfer-00.txt, January 2001, work in progress material.

HISTORY
       sftp-server first appeared in OpenBSD 2.8 .

AUTHORS
       Markus Friedl <markus@openbsd.org>

				January 9 2010			SFTP-SERVER(8)

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