Solaris

When using GDM (Gnome Display Manager), XDMCP access from remote host is not permitted by default.

To allow XDMCP access from the remote host with GDM, modify xdmcp entry in /etc/X11/gdm/gdm.conf file as follows:

FROM

    [xdmcp]
    # Distributions: Ship with this off.  It is never a safe thing to leave
    # out on the net.  Setting up /etc/hosts.allow and /etc/hosts.deny to only
    # allow local access is another alternative but not the safest.
    # Firewalling port 177 is the safest if you wish to have xdmcp on.
    # Read the manual for more notes on the security of XDMCP.
    Enable=false


TO

    [xdmcp]
    # Distributions: Ship with this off.  It is never a safe thing to leave
    # out on the net.  Setting up /etc/hosts.allow and /etc/hosts.deny to only
    # allow local access is another alternative but not the safest.
    # Firewalling port 177 is the safest if you wish to have xdmcp on.
    # Read the manual for more notes on the security of XDMCP.
    Enable=true


After the modification, restart gdm daemon:

    # svcadm restart svc:/application/gdm2-login:default