Terminal Emulation

[dtipton]

Can you run an of the GUI tools supplied with Linux (RedHat 7.1) from a remote windows terminal using terminal emulation software and the DISPLAY variable? If so does anyone know of any free emulation packages?

[APHRODITE007]

VNC

[godot]

get a windows ssh client that supports X tunneling, like SecureCRT and X-Win32

pretty easy, doing it now in fact.

[bdg1983]

Actually a little known fact is that XFree includes a server called Xnest and can be used similar to VNC or eXceed.

Remote X-sessions are possible, but recommended only for fast connections with plenty of bandwidth, as a graphical session requires alot of communication.

NOTE: To start additional X-session you will need to be logged in as the root user.

In short, a remote session requires the cooperation of both computers. The X access of the computer you wish to access must be modified to include any client that you want to connect from, and you must start a new X-session on your local computer.

To allow a graphical connection to a remote linux box, the computer you wish to connect to must allow graphical connections from your system. This is done by editing the Xaccess file in /etc/X11/kdm/ to allow the client computer(s) -- None is the default for most distros, but uncommenting the line

#*#any host can get a login window

allows all clients to connect, which may be a security risk, so you may want to specify clients. For this faq, we will just uncomment this line (it is the first non-comment commented line). Once this change is made, you will need to re-start the X-server. You can use the login manager, or just use a terminal to go to runlevel 3 then back to 5:

init 3
init 5

Second, the client will execute this command:
X :1 -query 192.168.1.5

The numbers will be different for your system; the ":1" is the next X-session - If you already have 2 X-sessions, use :2, etc. The ip, obviously is the system you want to connect to - this can be a fully qualified domain name if it is known by your system. This session will be on the next virtual terminal (typically F9) and will be the active one until you switch back.

To start a new X-session in a window of your current X-session (nested), use the Xnest command in place of X:

Xnest :1 -query 192.168.1.5

NOTES:

- To run this in the background, you just add the ampersand [&], and to disconnect it from a terminal, just [ctrl]-[d] out of the terminal window once it is in the background. If you forgot to send the process to the background, type [ctrl]-[z], then 'bg' [enter], then [ctrl]-[d] out.

I use Xnest :1 -indirect 172.16.1.147 on my work pc which gives me a list of our AIX servers.

[dtipton]

Thanks for all of the feedback. I downloaded the VNC software and it works great. I have Oracle 8.1.7 installed on a box running RedHat 7.1 and now I can run all of the Oracle GUI administration tools remotely on my local client.