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      1 SFTP-SERVER(8)          OpenBSD System Manager's Manual         SFTP-SERVER(8)
      2 
      3 NAME
      4      sftp-server - SFTP server subsystem
      5 
      6 SYNOPSIS
      7      sftp-server [-ehR] [-f log_facility] [-l log_level] [-u umask]
      8 
      9 DESCRIPTION
     10      sftp-server is a program that speaks the server side of SFTP protocol to
     11      stdout and expects client requests from stdin.  sftp-server is not
     12      intended to be called directly, but from sshd(8) using the Subsystem
     13      option.
     14 
     15      Command-line flags to sftp-server should be specified in the Subsystem
     16      declaration.  See sshd_config(5) for more information.
     17 
     18      Valid options are:
     19 
     20      -e      Causes sftp-server to print logging information to stderr instead
     21              of syslog for debugging.
     22 
     23      -f log_facility
     24              Specifies the facility code that is used when logging messages
     25              from sftp-server.  The possible values are: DAEMON, USER, AUTH,
     26              LOCAL0, LOCAL1, LOCAL2, LOCAL3, LOCAL4, LOCAL5, LOCAL6, LOCAL7.
     27              The default is AUTH.
     28 
     29      -h      Displays sftp-server usage information.
     30 
     31      -l log_level
     32              Specifies which messages will be logged by sftp-server.  The
     33              possible values are: QUIET, FATAL, ERROR, INFO, VERBOSE, DEBUG,
     34              DEBUG1, DEBUG2, and DEBUG3.  INFO and VERBOSE log transactions
     35              that sftp-server performs on behalf of the client.  DEBUG and
     36              DEBUG1 are equivalent.  DEBUG2 and DEBUG3 each specify higher
     37              levels of debugging output.  The default is ERROR.
     38 
     39      -R      Places this instance of sftp-server into a read-only mode.
     40              Attempts to open files for writing, as well as other operations
     41              that change the state of the filesystem, will be denied.
     42 
     43      -u umask
     44              Sets an explicit umask(2) to be applied to newly-created files
     45              and directories, instead of the user's default mask.
     46 
     47      For logging to work, sftp-server must be able to access /dev/log.  Use of
     48      sftp-server in a chroot configuration therefore requires that syslogd(8)
     49      establish a logging socket inside the chroot directory.
     50 
     51 SEE ALSO
     52      sftp(1), ssh(1), sshd_config(5), sshd(8)
     53 
     54      T. Ylonen and S. Lehtinen, SSH File Transfer Protocol,
     55      draft-ietf-secsh-filexfer-00.txt, January 2001, work in progress
     56      material.
     57 
     58 HISTORY
     59      sftp-server first appeared in OpenBSD 2.8.
     60 
     61 AUTHORS
     62      Markus Friedl <markus (a] openbsd.org>
     63 
     64 OpenBSD 5.0                     January 9, 2010                    OpenBSD 5.0
     65