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benmccann
Asked: 2011-02-11 23:35:54 +0800 CST

Using NX with no PasswordAuthentication SSH setup

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I'm trying to setup passwordless SSH access.

My username is bmccann, so in /etc/ssh/sshd_config I added:

PermitRootLogin no
PasswordAuthentication no
AllowUsers bmccann nx

I ran ssh-keygen on the client and put ~/.ssh/id_rsa.pub from the client into ~/.ssh/authorized_keys on the server.

I can now login with no password using the ssh command. However, I can no longer access the machine via NX as long as /etc/ssh/sshd_config has "PasswordAuthentication no".

Server error logs:

$ grep NX /var/log/messages
Feb 11 01:25:51 bmccann-htpc NXSERVER-3.4.0-12[23552]: ERROR: Failed authentication. NXSsh exit status is:255 'NXNssUserManager::auth'
Feb 11 01:25:51 bmccann-htpc NXSERVER-3.4.0-12[23552]: Failed SSHd authentication for user 'bmccann', to '127.0.0.1', port '22': 'NX> 204 Authentication failed.\n ' 'NXNssUserManager::auth'
Feb 11 01:25:51 bmccann-htpc NXSERVER-3.4.0-12[23552]: ERROR: Error while trying to authenticate user:bmccann. NXNssUserManager::auth returned 255 'NXShell::handler_login'
Feb 11 01:25:51 bmccann-htpc NXSERVER-3.4.0-12[23552]: ERROR: failed 'sshd authentication' for user 'bmccann' from '108.29.137.64'. NXShell::handler_login NXShell 373

What do I need to do to restore my NX access? Is there something I need to setup in the NX client so that it no longer asks me for a password?

nx

2 Answers

  1. What do I need to do to restore my NX access?

    Bring back the change in /etc/ssh/sshd_config and restart OpenSSH server.

    Use password or authorized keys. Empty passwords not allowed with PAM authentication.

    • 2
  2. Best Answer

    I couldn't find a way to get NX to stop prompting me for a password, but the following worked to allow a password to be used with NX:

    EnableUserDB = "1"
EnablePasswordDB = "1"
sudo /usr/NX/bin/nxserver --useradd bmccann

    I added more details on my blog.

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