I also ran a tcpdump on the Lasso machine (Ubuntu) between the two machines using
'sudo tcpdump -i any dot host xxx.xxx.xxx.xxx' where the xxx's are replaced with the FM machine's (OSX) IP address

I got this in response when I tried to make a connection via the /Lasso9/Admin/ds page
16:44:41.636953 IP [LASSO_MACHINE_NAME].local.48641 > [LASSO_MACHINE_NAME].5003: Flags [S], seq 139155010, win 14600, options [mss 1460,sackOK,TS val 3805043 ecr 0,nop,wscale 7], length 0

On Mar 18, 2013, at 4:44 PM, dabrams@apple.com wrote:

> I am attempting to hook up Lasso 9 to FM 12 using filemakerds and am getting an error of "Server returned nothing (no headers, no data)".
>
> I have verified that I have port level access from the web server to the db server using telnet to port 5003.
>
> I have checked inside the lasso error logs and found nothing.
>
> I have successfully connected to FM via ODBC from my development machine from within the network, so it does not seem that FM is blocking the connection, although I could be wrong on this.
>
> I have hooked Lasso up to the same db server using an MySQL connection and it connects right up with no problem.
>
> I'm not sure where to go to troubleshoot this any further. Suggestions? Is there some special thing that I'm missing to get the filemakerds connection to work with FM 12?
>
>
> #############################################################
> This message is sent to you because you are subscribed to
> the mailing list Lasso
> Lasso@lists.lassosoft.com
> To unsubscribe, E-mail to: <Lasso-unsubscribe@lists.lassosoft.com>
> Send administrative queries to <Lasso-request@lists.lassosoft.com>

#############################################################
This message is sent to you because you are subscribed to
the mailing list Lasso
Lasso@lists.lassosoft.com
To unsubscribe, E-mail to: <Lasso-unsubscribe@lists.lassosoft.com>
Send administrative queries to <Lasso-request@lists.lassosoft.com>