Linux XDMCP HOWTO

Thomas Chao

<tomchao at alcatel-lucent.com>

Revision History
Revision v1.4	11 June 2007
Adding info for now popular Ubuntu 7.0.4, RH Commercial Workstation v.3, Fedora Core 6 and 7, new Mandriva.
Revision v1.3	2 January 2003
Adding info for Red Hat 7.3 & 8.0, Mandrake 8.2 & 9.0, SuSE Linux configuration and contents update.
Revision v1.2	15 March 2002
Adding more info for Red Hat 7.2, Mandrake 8.1 and Slackware 8.0 Linux configuration and SSH X11 Forwarding.
Revision v1.1	20 March 2001
Revision and adding RH 7.0.
Revision v1.0	01 November 2000
Initial revision and release.

This HOWTO describes how you can use the combination of X Display Manager (xdm, kdm and gdm) and XDMCP (X Display Manager Control Protocol) to provide a solution for the X-Terminal and to provide a platform of efficient Remote X Apps environment. This document will takes the focus on how to setup the X connection using XDMCP.

Table of Contents

1. Introduction

1.1. Disclaimer
1.2. Feedback

2. The Procedure

2.1. Before you begin, some background
2.2. Security Reminder
2.3. The System I use
2.4. Remote Client Piece
2.5. Server Preparation
2.6. Steps to Complete the Procedures
2.7. Testing

3. X11 Forwarding using SSH

4. Troubleshooting

5. XDMCP and GDM (Gnome Display Manager)

6. Additional References

7. Authors