04-12-2010
SSH login hangs, serial console works
Server, running AIX 6.1 developed strange problem when logging in via SSH -- ssh client hangs without any error.
It is possible to run commands on server, using ssh ("ssh servername ls -l" is OK)
It is possible to log in normally, using serial console connected to server.
It was possible to access server, using pconsole web interface but it does not work any longer (Error 500: com.ibm.ws.portletcontainer.pcinvoker.PortletContainerAccess)
I noticed, that "getty" process is not running, maybe this is somehow related to this problem.
Any ideas or suggestions where to start digging, considering that server itself is located in another city?
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LEARN ABOUT SUSE
ssh-keysign
SSH-KEYSIGN(8) BSD System Manager's Manual SSH-KEYSIGN(8)
NAME
ssh-keysign -- ssh helper program for host-based authentication
SYNOPSIS
ssh-keysign
DESCRIPTION
ssh-keysign is used by ssh(1) to access the local host keys and generate the digital signature required during host-based authentication with
SSH protocol version 2.
ssh-keysign is disabled by default and can only be enabled in the global client configuration file /etc/ssh/ssh_config by setting
EnableSSHKeysign to ``yes''.
ssh-keysign is not intended to be invoked by the user, but from ssh(1). See ssh(1) and sshd(8) for more information about host-based authen-
tication.
FILES
/etc/ssh/ssh_config
Controls whether ssh-keysign is enabled.
/etc/ssh/ssh_host_dsa_key, /etc/ssh/ssh_host_rsa_key
These files contain the private parts of the host keys used to generate the digital signature. They should be owned by root, read-
able only by root, and not accessible to others. Since they are readable only by root, ssh-keysign must be set-uid root if host-
based authentication is used.
SEE ALSO
ssh(1), ssh-keygen(1), ssh_config(5), sshd(8)
HISTORY
ssh-keysign first appeared in OpenBSD 3.2.
AUTHORS
Markus Friedl <markus@openbsd.org>
BSD
May 31, 2007 BSD