NoMachine NX: simple setup without adding users

[AlesZib]

Morning AlesZib.

You can view the last few entries of the syslog by executing

tail /var/syslog.0

This log gets written to very frequently, so run the command above immediately after the usercheck.

Hi sp00n. I do not have this file. I get:

tail /var/syslog.0
tail: cannot open `/var/syslog.0' for reading: No such file or directory

Any ideas?

[sp00n]

Try without the .0 on the end.

[AlesZib]

sp00n, now I found the syslog.0 in /var/log/.

However, even after runing usercheck (perhaps because it does not return any errors for me) or a failed atempt it does not contain anyting NX related.

[alenis]

AlesZib and SpOOn, did you make any progress? I have exactly the same problems: I can login as NX user but when I try to access through the GUI I get authorization failed. Even the syslog.0 looks the same...Please let me know

[AlesZib]

Unofortunatelly no. Still hoping that some expert will post some solution here. I'm relatively new to linux and have no idea what else I could do.

[alenis]

reading these posts:

http://lists.kde.org/?l=freenx-knx&m...4212328392&w=2

and

http://ubuntuforums.org/archive/index.php/t-449382.html

I got the impression that the problem may be related to the sshd_config file on the server. They suggest to put a line relating to the .ssh/authorized_keys2 file.
However, I cannot play right now with the sshd_config file because I am far away from my server. I'll keep you informed...

[AlesZib]

I think I tried this and it did not work. The difference between at least my problem and their is that I can log in as a nx user (that is, as user names "nx") and aslo --usercheck reports that everything is ok, but I ctill can not connect.

[sp00n]

Hi alenis / AlesZib,


No, not fixed it, I have given up. could not get freenx to work either, same problem.

I am experiencing the same issue as AlesZib, the ssh authentication is fine for user nx, I can ssh in as that user no problem. the issue seems to be the authentication of the user that nx does after the ssh session has been initiated.

[gotmonkey]

Initially, I found out about freenx from ubuntuguide and followed the install from the freenx homepage. Everything is working for remoting into the machine remotely. The weird thing that I am experiencing is that I have a monitor, keyboard, mouse connected to that system. I have the machine to autologin my account. When the system boots, I have display through the bios and the Ubuntu splash screen, but after that, the screen goes blank. I can remote in (NoMachine) from another system, I just find it weird that machine went headless on me.

Anyone know why this happening? It is not a huge issue. I plan to use the system headless, but while I am still setting up my fileserver and shares, it would be nice to do it at the local console.

[jelevin]

This thread has been very helpful to me. One additional point that I discovered after a long afternoon of frustration is as follows.

In attempting to secure ssh and NX access I modified my working server sshd_config and hosts files as follows:

#In sshd_config
Port 55555
Protocol 2
LoginGraceTime 2m
MaxAuthTries 3

PermitRootLogin no
StrictModes yes
PermitEmptyPasswords no

# /etc/hosts.allow
sshd: 192.168.0.0/255.255.255.0
sshd: a trusted external ip address

# /etc/hosts.deny
sshd: ALL

This resulted in a an inability to connect and a variety of unhelpful error messages. I was able to get things working again after adding:

# /etc/hosts.allow
sshd: LOCAL

I think I now have moved ssh to a different port, and restricted access to selected IP addresses.

Maybe adding sshd: LOCAL will help someone else.