Thanks for the post. 6518 needs to be open both inbound and outbound on both systems. Meaning the initial connection is made on TCP port 6518....but repsponse from PDServer will be made on many ports back to ProDiscover to port 6518.
Regards,
Alex
Good news! So the NAT connection in VMWare server would not allow/direct the inbound packets to ProDiscover. I hope the bridge connection is sufficent for your needs.
Again, thanks for using the forums.