scp not working while ssh works Post: 302420359

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Operating Systems AIX scp not working while ssh works Post 302420359 by bakunin on Tuesday 11th of May 2010 11:16:22 AM

05-11-2010

Registered User

Quote:

Originally Posted by pludi

On the AIX side, is there anything in the sshd_config about chroot-ing the users if they use sftp or scp?

no, there isn't. Here is the complete config (comments stripped):

Code:

Protocol 2
SyslogFacility AUTH
LogLevel INFO
PermitRootLogin no
PermitEmptyPasswords no
UsePAM yes
AllowTcpForwarding yes
X11Forwarding yes
PrintMotd yes
UseDNS no
Subsystem       sftp    /usr/sbin/sftp-server

Quote:

Originally Posted by fpmurphy

If "ssh AIXHOST /bin/true"

I have tried it and it produced nothing.

In the meanwhile i have found out a bit more, alas nothing of any remedial value:

I tried to create another user completely unknown to LDAP to make certain the authentication between LDAP and system don't get confused: no change of the symptoms described above.

I tried to initiate the scp from the other direction and learned that there is a firewall between these two hosts, which seemingly forbids scp-communication in the other direction. There is simply no response at all when trying like this, not even an error message. The command will just time out eventually:

Code:

bakunin@aix $ scp bakunin@linux:~/file .

We tried to scp from a third system (also AIX, but IMHO this makes any difference) with a different user-ID, which works. It is at least established therefore, that the scp-system on the AIX-host in question is not broken in itself.

bakunin

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LEARN ABOUT OPENDARWIN

sftp-server

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

NAME

       sftp-server - SFTP server subsystem

SYNOPSIS

       /usr/lib/ssh/sftp-server

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. There are no options or config settings.

       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.

EXIT STATUS

       The following exit values are returned:

       0        Successful completion.

       >0       An error occurred.

FILES

       /usr/lib/sftp-server

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)

       To  view  license  terms,  attribution,  and  copyright  for OpenSSH, the default path is /var/sadm/pkg/SUNWsshdr/install/copyright. If the
       Solaris operating environment has been installed anywhere other than the default, modify the given path to access the file at the installed
       location.

AUTHOR

       Markus Friedl

SunOS 5.10                                                          30 Jul 2003                                                    sftp-server(1M)

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