[LightDM] Unable to connect using Open Text Exceed XDMCP BroadcastQuery

[David C. Partridge]

I've configured LightDm to accept XDMCP requests, and if I send a Query
specifically to the machine from Exceed running on Windows 10 I can connect.

 

If however I configure Exceed to send a BroadcastQuery all I get is a
timeout.

 

In both cases I see:

 

Got [QueryType](authentication_names=[]) from 192.168.129.66:[portnumber]

SendWilling(authentication_name='' hostname='' status='')
192.168.119.66:[portnumber]

 

but only if [QueryType] is Query do I see 

 

GotRequest(display_number= ..

 

Am I doing something wrong - or have I misconfigured a firewall rule
somewhere? 

 

Dave

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