[K12OSN] VNC Problem Solved

Les Mikesell lesmikesell at gmail.com
Tue Jun 17 15:26:46 UTC 2008

Nils Breunese wrote:
>> But now I have two vnc servers installed.  Since one came built into ltsp
>> and the other (freenx) didn't configure for me properly (following
>> instructions at http://wiki.centos.org/HowTos/FreeNX which failed at
>> PasswordAuthentication no
>>        AllowUsers nx)
>> yum install nx freenx libXcomposite was the install command.  Can I 
>> replace
>> install with uninstall?
> FreeNX is not a VNC server. Both provide remote GUI access though. See 
> 'yum --help', the command is remove, not uninstall.

Freenx with the NX client is much nicer, though.  Don't give up on it. 
The trick is that the commercial NX server always uses the same key that 
matches the one built into the client, where freenx generates unique key 
pairs for each install.   Just use putty to ssh to the server as root 
and cat /etc/nxserver/client.id_dsa.key, and in another window open the 
NX config screen and push the 'key' button.  Then delete the existing 
key contents and paste in the correct one including the ---BEGIN and 
---END lines.  If you have trouble with this, use winscp or other means 
to transfer the file over and use the 'import' button.  When you get it 
right you won't have the authentication failure error.  If you have 
firewalling involved you may also want to make sure the 
"advanced/disable encryption of all traffic" box is unchecked so the 
connection will run over port 22.

   Les Mikesell
    lesmikesell at gmail.com

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