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

[David C. Partridge]

So to clarify:  Is the returned Willing message/packet different when responding to a Broadcast as compared to that from a Query.  If so in what way does it differ.

 

The only firewall between is Windows 10 as right now I have the Ubuntu firewall turned off (to be fixed later).

 

Dave

 

From: Robert Ancell [mailto:robert.ancell at gmail.com] 
Sent: 16 March 2016 02:45
To: David C. Partridge; lightdm at lists.freedesktop.org
Subject: Re: [LightDM] Unable to connect using Open Text Exceed XDMCP BroadcastQuery

 

That looks correct to me.

To be clear, when you set Exceed to send BroadcastQuery LightDM reports that it sends a Willing back to it? That suggests to me the Willing is either being rejected by Exceed or a firewall has dropped the packet for some reason.

 

On Wed, 16 Mar 2016 at 15:39 David C. Partridge <david.partridge at perdrix.co.uk> wrote:

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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