Here is a list of all the information you can read on this topic.
Are you not in the Netherlands, but in another country? Then you cannot apply for asylum in the Netherlands. Nor can you apply for asylum online.
Have you arrived in the Netherlands and did you not arrive via Schiphol Airport or via a port? Then travel to the registration centre in the village of Ter Apel to apply for asylum. You can travel from where you arrived to Ter Apel by public transportation free of charge.
Do you arrive by plane at Schiphol Airport, another airport or at a port in the Netherlands? Then you apply for asylum there. You then await your asylum application in a closed reception centre at Schiphol Airport.