A system for secure communication over a computer network. The system includes a web server, a component, and a service gateway. The web server is operable to receive a message from a customer application via a transport layer and validate a digital certificate associated with the message. The component, which may be a software component, receives the digital certificate from the web server at the transport layer and provides the digital certificate at an application layer. The service gateway receives the digital certificate at the application layer and identifies the customer application associated with the digital certificate. The service gateway promotes validation of the digital certificate and wherein the digital certificate is valid, the service gateway promotes communication of the message from the customer application to a supplier application.