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Top Forums UNIX for Advanced & Expert Users Fatal: Read from socket failed: Connection reset by peer [preauth] Post 302904121 by vbe on Monday 2nd of June 2014 09:20:05 AM
Old 06-02-2014
If you know the remote host , try to ssh to it and see if it rejects you... If its the case remove from its known_hosts file the line concerning your host and try again
I normally note down the line number(say, 42) from the error message, and run
Code:
 vi +42 known_hosts

and delete offending key.

Code:
ssh-keygen  -R <hostname>

can be used
to remove all keys belonging to a hostname.

Last edited by vbe; 06-02-2014 at 10:26 AM.. Reason: added ssh-keygen...
 

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SSS_SSH_KNOWNHOSTSPR(1) 					 SSSD Manual pages					   SSS_SSH_KNOWNHOSTSPR(1)

NAME
sss_ssh_knownhostsproxy - get OpenSSH host keys SYNOPSIS
sss_ssh_knownhostsproxy [options] HOST [PROXY_COMMAND] DESCRIPTION
sss_ssh_knownhostsproxy acquires SSH host public keys for host HOST, stores them in a custom OpenSSH known_hosts file (see the "SSH_KNOWN_HOSTS FILE FORMAT" section of sshd(8) for more information) /var/lib/sss/pubconf/known_hosts and estabilishes connection to the host. If PROXY_COMMAND is specified, it is used to create the connection to the host instead of opening a socket. ssh(1) can be configured to use sss_ssh_knownhostsproxy for host key authentication by using the following directives for ssh(1) configuration: ProxyCommand /usr/bin/sss_ssh_knownhostsproxy -p %p %h GlobalKnownHostsFile2 /var/lib/sss/pubconf/known_hosts This is an experimental feature, please use http://fedorahosted.org/sssd to report any issues. OPTIONS
-p,--port PORT Use port PORT to connect to the host. By default, port 22 is used. -d,--domain DOMAIN Search for host public keys in SSSD domain DOMAIN. -h,--help Display help message and exit. SEE ALSO
ssh(8), ssh_config(5), sss_ssh_authorizedkeys(1). AUTHORS
The SSSD upstream - http://fedorahosted.org/sssd SSSD
03/04/2013 SSS_SSH_KNOWNHOSTSPR(1)
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