Hi,

On my local machine (llamas.hi.inet: Linux FC3):

[jdiaz@llamas ~]$ xhost +
access control disabled, clients can connect from any host
[jdiaz@llamas ~]$

On the remote machine:

opmxopge@sgbe2 : po_co_ordcorba.ss > export DISPLAY=llamas.hi.inet:0.0
opmxopge@sgbe2 : po_co_ordcorba.ss > xclock
Error: Can't open display: llamas.hi.inet:0.0
opmxopge@sgbe2 : po_co_ordcorba.ss > ping -s llamas.hi.inet
PING llamas.hi.inet: 56 data bytes
64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=0. time=0. ms
64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=1. time=1. ms
^C
----llamas.hi.inet PING Statistics----
2 packets transmitted, 2 packets received, 0% packet loss
round-trip (ms) min/avg/max = 0/0/1
opmxopge@sgbe2 : po_co_ordcorba.ss >

Any hint ?

Thanks in advance,
Jose Luis.

jose_luis_fdez_diaz_news@yahoo.es wrote:
> On my local machine (llamas.hi.inet: Linux FC3):
>
> [jdiaz@llamas ~]$ xhost +
> access control disabled, clients can connect from any host
> [jdiaz@llamas ~]$
>
> On the remote machine:
>
> opmxopge@sgbe2 : po_co_ordcorba.ss > export DISPLAY=llamas.hi.inet:0.0
> opmxopge@sgbe2 : po_co_ordcorba.ss > xclock
> Error: Can't open display: llamas.hi.inet:0.0
> opmxopge@sgbe2 : po_co_ordcorba.ss > ping -s llamas.hi.inet
> PING llamas.hi.inet: 56 data bytes
> 64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=0. time=0. ms

Possibilities:
- 10.95.27.186 is not the X server (naming problem).
- The X server is not listening on TCP port 6000.
try a 'telnet llamas.hi.inet 6000' and see if you get an error.
- The display is not started on :0
Try with DISPLAY=:0.0 from the X server.

Yours,
Laurenz Albe

Laurenz Albe wrote:
> jose_luis_fdez_diaz_news@yahoo.es wrote:
> > On my local machine (llamas.hi.inet: Linux FC3):
> >
> > [jdiaz@llamas ~]$ xhost +
> > access control disabled, clients can connect from any host
> > [jdiaz@llamas ~]$
> >
> > On the remote machine:
> >
> > opmxopge@sgbe2 : po_co_ordcorba.ss > export
DISPLAY=llamas.hi.inet:0.0
> > opmxopge@sgbe2 : po_co_ordcorba.ss > xclock
> > Error: Can't open display: llamas.hi.inet:0.0
> > opmxopge@sgbe2 : po_co_ordcorba.ss > ping -s llamas.hi.inet
> > PING llamas.hi.inet: 56 data bytes
> > 64 bytes from llamas.hi.inet (10.95.27.186): icmp_seq=0. time=0. ms
>
> Possibilities:
> - 10.95.27.186 is not the X server (naming problem).
> - The X server is not listening on TCP port 6000.
> try a 'telnet llamas.hi.inet 6000' and see if you get an error.

opmxopge@sgbe2 : bin > telnet llamas.hi.inet 6000
Trying 10.95.27.186...
telnet: Unable to connect to remote host: Connection refused
opmxopge@sgbe2 : bin >


On local it doesn't run neither:

[jdiaz@llamas etc]$ telnet localhost 6000
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host: Connection refused




> - The display is not started on :0
> Try with DISPLAY=:0.0 from the X server.
>
> Yours,
> Laurenz Albe


Regards,
Jose Luis.

jose_luis_fdez_diaz_news@yahoo.es wrote:
>>> Error: Can't open display: llamas.hi.inet:0.0
>
> opmxopge@sgbe2 : bin > telnet llamas.hi.inet 6000
> Trying 10.95.27.186...
> telnet: Unable to connect to remote host: Connection refused

Well, start your X server with TCP listening support.
It is probably started with '-nolisten tcp' in some xserverrc file
or similar.

Yours,
Laurenz Albe

That was the problem.

Best Regards,
Jose Luis.


Laurenz Albe wrote:
> jose_luis_fdez_diaz_news@yahoo.es wrote:
> >>> Error: Can't open display: llamas.hi.inet:0.0
> >
> > opmxopge@sgbe2 : bin > telnet llamas.hi.inet 6000
> > Trying 10.95.27.186...
> > telnet: Unable to connect to remote host: Connection refused
>
> Well, start your X server with TCP listening support.
> It is probably started with '-nolisten tcp' in some xserverrc file
> or similar.
>
> Yours,
> Laurenz Albe

In comp.os.linux.setup jose_luis_fdez_diaz_news@yahoo.es:

> [jdiaz@llamas ~]$ xhost +
> access control disabled, clients can connect from any host

This is a major security problem you are opening here, there's no
reason, simply use 'ssh' and request X11 forwarding, see 'man
ssh'. You don't need to care about $DISPLAY/xauthority, ports
blocked by some firewall and alike. Anything will be done for you
auto-magically and X11 securely tunneled from ssh, even through
multiple systems.

Good luck

[..]

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