Guide to X-terminal setup
The dusty old machine lying in the corner can be revived with Linux. But
when it comes to more memory hungry apps like Netscape and StarOffice then
you're at a loss. If however, you have a Linux machine on your network
with bigger hardware then you're in luck. Make that the X client and
designate the low end machine as the X server.
The X-terminal concept is essentially like telneting into a machine and
then running some application there. All the working is done on the
machine that you are connecting to but the display is shown on your
machine. That just gives you access to console mode text applications,
whereas an X-Terminal setup will give you access to the entire range of
GUI applications. All applications will be run on the server but the
display will be exported to your computer. The machine that you setup as
the X terminal just serves as a display. This setup works very well with
diskless workstations and older computers.
First a little theory for you. The X server is the software that handles
all the interactions between the GUI and your hardware. Windows equivalent
would be the graphics card driver. But X is a lot more than than. Here it
becomes a server that your clients connect to. Clients would be the
various GUI applications like GNOME, KDE etc communicating through network
protocols. This architecture allows a lot of flexibility. The clients can
be run on any machine but the display can be routed to another machine.
For remote logins via X you need to enable xdm on the server. Xdm is the X
Display Manager which manages the login and authentication of users. Think
of it as the old text login screen with a nicer GUI layout. Good feature
is that not only does it authenticate users locally, it also provides a
login screen to any client that will connect to it.
Find the xdm-config file. This should be in /usr/X11R6/lib/X11/xdm
(SuSE) or in /etc/X11/xdm (Red Hat, Mandrake).
Open xdm-config. At the bottom of the file is look for a line that says
This line needs to be commented out ( Put a '#' in front of it ) if you
want to allow external X clients to be able to connect to the server.
Edit the Xaccess file. Uncomment out the line with a '*' if it exists. If
not then add a line at the top which contains only a '*'. This will allow
hosts to connect directly to the server.
There are several ways in which a client may connect to the server.