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Full Discussion: SSH Problem auth problem
Top Forums UNIX for Advanced & Expert Users SSH Problem auth problem Post 48704 by budrito on Sunday 14th of March 2004 10:58:37 PM
Old 03-14-2004
Network SSH Problem auth problem
Hi,

Just recently we seem to be getting the following error message relating to SSH when we run the UNIX script in background mode:

warning: You have no controlling tty. Cannot read confirmation.^M
warning: Authentication failed.^M
Disconnected; key exchange or algorithm negotiation failed (Key exchange failed.).^M
FATAL: ssh2 client failed to authenticate. (or you have too old ssh2 installed, check with ssh2 -V)^M

When the script is run in foreground, it all seems to run fine. Does anyone know why this is happening and what the fix is to this.

I have the latest version of SSH installed i.e. 3.2

Your assistance would be appreciated.

thanks
Bud.
 

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LEARN ABOUT DEBIAN

secsh

SECSH(5)							    Lsh Manuals 							  SECSH(5)

NAME

       secsh - the Secure Shell protocol

DESCRIPTION

       secsh  is  a  protocol suite for secure remote login and other secure network services over an insecure network. It is outlined in [SECSH].
       It has three major components:

       The Transport layer protocol
	      This protocol, specified in [SECSH-TLP], provides  server  authentication,  confidentiality,  and  integrity  with  perfect  forward
	      secrecy.

       The User authentication protocol
	      This protocol, specified in [SECSH-AUTH], is used to authenticate a client to a server.

       The Connection protocol
	      This protocol, specified in [SECSH-CONN], multiplexes an encrypted tunnel into several logical channels.

IMPLEMENTATIONS

       Several implementations of the secsh protocol suite exist.

       The SSH2 product of SSH Communications Security Ltd., Finland <URL:http://www.ssh.fi> was the first. The secsh protocol suite has benefited
       a lot from their experience with their older SSH1 product, which is still in widespread use; it implements an older protocol ([SSH1]).

       The lsh suite of programs is a free implementation of the secsh protocol suite; it is distributed under the GNU General Public License.

REFERENCES

       [SECSH-ARCH] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen, SSH Protocol Architecture, Internet draft, 6 August 1998

       [SECSH-TRANS] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen, SSH Transport Layer Protocol, Internet draft, 6 August 1998

       [SECSH-AUTH] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen, SSH Authentication Protocol, Internet draft, 6 August 1998

       [SECSH-CONN] T. Ylonen, T. Kivinen, M. Saarinen, T. Rinne and S. Lehtinen SSH Connection Protocol, Internet draft, 6 August 1998

       [SSH1] T. Ylonen, The SSH (Secure Shell) Remote Login Protocol, Internet draft (expired), 15 November 1995

TRADEMARKS

       SSH and Secure Shell are trademarks or registered trademarks of SSH Communications Security Ltd.

AUTHOR

       This man-page was written by J.H.M. Dassen (Ray) <jdassen@wi.LeidenUniv.nl>.

SEE ALSO

       lsh(1), lshd(8), ssh2(1), sshd2(8), ssh1(1), sshd1(8)

LSH
								   JANUARY 1999 							  SECSH(5)
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