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Full Discussion: passwordless authentication of SFTP script
Top Forums Shell Programming and Scripting passwordless authentication of SFTP script Post 302157444 by uday.shankar on Friday 11th of January 2008 01:54:57 AM
Old 01-11-2008
passwordless authentication of SFTP script
Dear All
I need to discuss about the problem which has been discussed so many times here. I need to transfer a file from server A to server B via passwordless SFTP script. By reading the threads on this topic here, I followed the below steps but still it's not working ..

Pls find the steps below:
a) Logged in Server An with user Id 'informat' and corresponding passowrd.Home directory is '/opt/informatica'

b) Created the keys in server 'A' with the following command.
/user/local/bin/ssh-keygen -t rsa

c) Copied the public key in id_rsa.pub file under /opt/informatica/.ssh directory of server 'A'

d) Copied the 'id_rsa.pub' file to 'authorized_key' file in /opt/informatica/.ssh directory in serber 'B'

e) Grant 777 privileges to authorized_key file in server 'B'

f) Logged into server 'A' with 'informat' user ID

g) Executed the sftp command for server B
sftp informar@B

h) But it is still prompting for password, where as it should not be because of key based authentication. Can some one pls help me where am I going wrong ..

Thanks in advance
 

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LEARN ABOUT DEBIAN

sftp-server

SFTP-SERVER(8)						    BSD 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>

BSD
								  January 9, 2010							       BSD
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