How to configure a RHEL to allow remote access to GDM via XDMCP ?

Solution Verified - Updated -

Issue

  • How can GDM be configured to allow remote access via XDMCP?
  • When trying to connect remotely to a server using Cygwin-X or Exceed, users are unable to get a login screen. How to configure gdm to allow remote access via XDMCP ?

Environment

  • Red Hat Enterprise Linux 3
  • Red Hat Enterprise Linux 4
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 7
  • GDM
  • XDMCP

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