ThinClients

Thin Client

• The user login password is: thinclient
• The thinclient OS is hacked to open a terminal as root when user logs in (xterm command placed in /etc/init.d/detect_ftp.sh), from which a vnc connection to a workstation can be opened (run /home/user/start-linux.sh, which just contains "vncviewer -geometry 1280x1024 -fullscreen workstation::port &")
• The workstations used are as follows:
  • veneon -> uqmd11
  • cradle -> uqmd12
  • hermon -> uqmd13
• The thinclient OS has some configuration settings in /etc/configedit

Workstations

• On the workstations, the vncserver (Xvnc) runs from xinetd on a specific port (thinclientvnc->5091/tcp); this is configured from /etc/xinetd.d/thinclientvnc:

service thinclientvnc
{
disable = no
socket-type = stream
protocol = tcp
wait = no
user = nobody
server = /usr/bin/Xvnc
server_args = -inetd :1 -query localhost -geometry 1280x1024 -depth 24 -once -fp /usr/share/X11/fonts/misc/ -securitytypes=none
}

• The thinclientvnc port is mapped to 5091/tcp in /etc/services:

thinclientvnc 5901/tcp

• GDM is set up as follows: /etc/gdm/custom.conf

[daemon]
RemoteGreeter=/usr/libexec/gdmgreeter
GtkModulesList=
AddGtkModules=false

[security]
DisallowTCP=false

[xdmcp]
Enable=true

[gui]

[greeter]

[chooser]

[debug]

[servers]

• To reload these settings after a change both gdm and xinet daemon have to be restarted:

init 3; sleep 5; init 5;
/etc/init.d/xinetd reload