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+SFTP-SERVER(8)          OpenBSD System Manager's Manual         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 sftp-server.  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 sftp-server.  The
+             possible values 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 therefore requires that syslogd(8)
+     establish a logging socket inside the chroot directory.
+
+SEE ALSO
+     sftp(1), ssh(1), sshd_config(5), sshd(8)
+
+     T. Ylonen and S. Lehtinen, 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>
+
+OpenBSD 4.9                     January 9, 2010                    OpenBSD 4.9