Overview
Set up XDCMP so that I can use the GUI remotely via MobaXTerm .
References
Configuring XDMCP and GDM on Red Hat Linux
Procedure
Update Configuration File
Update /etc/gdm/custom.conf as shown before:
[security]
DisallowTCP=false
AllowRemoteRoot=true
[xdmcp]
Enable=true
Restart the GDM Service
gdm-restart