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Re: X11 Termininal

 
George Nikoloudis_1
Frequent Advisor

X11 Termininal

Hi,

I have the below issue:

I have one server in a remote site. I am connected to the remote site over ISDN line and in my site i have a firewall. The firewall has open the X11 port for communication.

The case is that when I am trying to connect using Reflection xterm or hpterm then this is not possible.

Can you help me.
5 REPLIES 5
benoit Bruckert
Honored Contributor

Re: X11 Termininal

Hi,
Don't forget when you want to start an xterm that you are using mostly remote shell or rexec to call the server, and in such a case you have to open the ports...
And in X11, don't forget that the server is the terminal and the client is the server where the xterm is stored.

The best way is to see the logs of your firewall to check what is rejected !!!

hth
Benoit
________
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U.SivaKumar_2
Honored Contributor

Re: X11 Termininal

Hi,

Ensure you have opened these ports in your firewall for Reflection X to work.
xdmcp 177/tcp
xdmcp 177/udp
x11 6000-6063/tcp
x11 6000-6063/udp
xfs 7000/tcp
xfs 7000/udp

regards,

U.SivaKumar

Innovations are made when conventions are broken
Bill Hassell
Honored Contributor

Re: X11 Termininal

I would strongly recommend closing X11 as a communication port through your firewall! It is not secure at all and with only an ISDN line, VERY slow because of the enormous overhead needed to display simple characters on the display. Rather than using xterm or hpterm (which must run on a remote box), get a copy of Reflection for HP which is the best HP terminal emulator. The only data transferred between the two systems are the actual telnet characters, with all other display features handled in the PC.

For even better security, install OpenSSH (from the HP website software.hp.com) and add the SSH components to Reflection for HP so the firewall only has to pass port 22 for secure communication.


Bill Hassell, sysadmin
Alex Glennie
Honored Contributor

Re: X11 Termininal

to add to Bills comments on the slowness of X across isdn : you may wish to look into LBX : low badwidth X I beleive Reflections, native hpux Xservers and Exceed support this extension
George Nikoloudis_1
Frequent Advisor

Re: X11 Termininal


Ok what I ddid was the following:

I installed ssh, in the remote server and I open the port 22. Then I start the ssd inthe remote server and the ssh in the local client.

I am starting the X Server in teh local client e.g. Reflection or Exceed and then I am connecting to the Remote server using the ssh client.
After that I can start any X applicaiotn I want

Thanks for teh guidance and teh suppotrt