SFTP-SERVER(8)

NAME
sftp-server - SFTP server subsystem

SYNOPSIS
sftp-server [-f log_facility] [-l log_level]

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:

-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.

-l log_level
    Specifies which messages will be logged by sftp-server. The possible values are: SILENT, 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.

For logging to work, sftp-server must be able to access /dev/log. Use of sftp-server in a chroot configuation 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, 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>