On Sat, Nov 13, 2021 at 2:22 PM Ekkard Gerlach <[log in to unmask]> wrote:
>
> Hello,
>
> using SL 6.10, nxserver 3.2.0-74 .

Stop there. Update to SL 7 if you expect contemporary tools to work or
continue to work: the underlying RHEL 6 from upstream  The final
release of RHEL 6 was more than 3 years ago.

Nico Kadel-Garcia

> root@arthur:~# export DISPLAY=10.0.0.9:1002.0
> Sie haben neue Post in /var/spool/mail/root.
> root@arthur:~# xterm
> Warning: This program is an suid-root program or is being run by the root user.
> The full text of the error or warning message cannot be safely formatted
> in this environment. You may get a more descriptive message by running the
> program as a non-root user or by removing the suid bit on the executable.
> xterm Xt error: Can't open display: %s
>
> but:
> root@arthur:~# export DISPLAY=:1002.0
> root@arthur:~# xterm
> Warning: Cannot convert string "nil2" to type FontStruct
> xterm: cannot load font -misc-fixed-medium-r-semicondensed--13-120-75-75-c-60-iso10646-1
>
> works!!  (xhost + is in autostart of every user).
>
>
> Why not accessible viel IP/ network? Only accessible local? What is locked on scientific?
>
>
> example:
>
> --pc44      30755  0.0  0.4 180096 120300 ?       S    10:00   0:10   _ /usr/libexec/nx/nxagent -persistent -D -name NX - pc44@arthur:1002 - DavidX (GPL Edition) -option /home/pc44/.nx/C-arthur-1002-27736AF6397123CD7F3F645BCA8E28A4/options -nolisten tcp :1002
>
>
> nxstarts with "-nolisten tcp". Where is that set? - In /etc/nxserver/node.conf:
>
> #AGENT_EXTRA_OPTIONS_X="-nolisten tcp"   #    is commented out!!
>
> When  I modify it to
>
> AGENT_EXTRA_OPTIONS_X="-listen tcp"     # nolisten -> listen!
>
> Then nxserver doesn't allow any login, aborts with error message
>
> Error: Aborting session with 'Unrecognized option: -listen'.
>
>
> anybody here can help?
>
> Some security policy on SL 6.10 that forces nxserver to "-nolisten tcp" ?
>
> Or: who or what forces to start nx with "-nolisten tcp" although its not commented in in node.conf?
>
>
> tia
>
> Ekkard