I had my filemaker pro 8 on my server set up to allow remote access. In doing so, we had to go into the router and under "Applications" choose a port range start and end specific to FILEMAKER PRO. This included a specific IP address.
For some reason SKYPE seems to have invaded my router and now appears as the only application set up. I do not have a record of the port ranges needed for FMP. Does anyone know what these numbers would be?