Oracle Linux XDMCP Configuration

1. Display manager configuration

• Change runlevel to 5
  Open/etc/inittab and set the initial runlevel to 5 as following:

  id:5:initdefault:

• Configure GDM
  If you are using kdm, skip this section and go to 'Configure KDM' section below.
  
  Open /etc/X11/gdm/gdm.conf and set the Enable entry to 1 in the [xdmcp] section as following.

  [xdmcp]
  Enable=1

• Configure KDM
  If you are using gdm, you can skip this step.
  
  Open /etc/X11/xdm/xdm-config comment out the "requestPort" option as following:

  DisplayManager.requestPort: 0 ==>
  !DisplayManager.requestPort: 0

  
  Open /etc/X11/xdm/Xaccess and remove the initial "#" character for the following line:

  #* #any host can get a login window ==>
  * #any host can get a login window

  
  Open /etc/kde/kdm/kdmrc and set the Enable entry to true in the [xdmcp] section as following.

  [xdmcp]
  Enable=true

2. Firewall (TCP/UDP Ports) Configuration

• Open UDP port 177 from the PC to the remote host direction.
• Open incoming TCP ports 6000~6010 from the remote host to your PC.

3. Reboot the remote host and start Xmanager

# init 3; init 5