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Full Discussion: ssh/sftp failure connection
Top Forums UNIX for Advanced & Expert Users ssh/sftp failure connection Post 302112193 by james_falco on Monday 26th of March 2007 02:29:03 PM
Old 03-26-2007
ssh/sftp failure connection

Hello,


I just want to ask regarding the meaning of the error that we got using sftp:
Code:
Connecting to <TARGET SERVER IP>...
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the DSA host key has just been changed.
The fingerprint for the DSA key sent by the remote host is
<FINGERPRINT>.
Please contact your system administrator.
Add correct host key in .ssh/known_hosts to get rid of this message.
Offending key in .ssh/known_hosts:10
DSA host key for <TARGET SERVER IP> has changed and you have requested strict checking.
Host key verification failed.
Connection closed

Is that saying it has an error in line 10 of the known_hosts file?
We are suspecting that it has been corrupted. What we will do is to remove that line (#10) and manually sftp to that target server to set the known_hosts file, then we run the script afterwards. Please advice. Thanks.
 

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sftp-server(1M) 					  System Administration Commands					   sftp-server(1M)

NAME
sftp-server - SFTP server subsystem SYNOPSIS
/usr/lib/ssh/sftp-server [-f log_facility] [-l log_level] DESCRIPTION
sftp-server implements the server side of the SSH File Transfer Protocol as defined in the IETF draft-ietf-secsh-filexfer. sftp-server is a subsystem for sshd(1M) and must not be run directly. Command-line flags to sftp-server should be specified in the Subsys- tem declaration. See sshd_config(4) for more information. To enable the sftp-server subsystem for sshd add the following to /etc/ssh/sshd_config: Subsystem sftp /usr/lib/ssh/sftp-server See sshd_config(4) for a description of the format and contents of that file. There is no relationship between the protocol used by sftp-server and the FTP protocol (RFC 959) provided by in.ftpd. OPTIONS
Valid options are listed below. As stated above, these are to be specified in the Subsystem declation of sshd_config. -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: 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 equiva- lent. DEBUG2 and DEBUG3 each specify higher levels of debugging output. The default is ERROR. EXIT STATUS
The following exit values are returned: 0 Successful completion. >0 An error occurred. FILES
/usr/lib/ssh/sftp-server Server-side binary. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWsshdu | +-----------------------------+-----------------------------+ |Interface Stability |Evolving | +-----------------------------+-----------------------------+ SEE ALSO
sftp(1), ssh(1), ssh-add(1), ssh-keygen(1), sshd(1M), sshd_config(4), attributes(5) SunOS 5.11 24 Oct 2007 sftp-server(1M)
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