Methods and systems for a flexible, scalable hardware and software platform that allows a managed security service provider to easily provide security services to multiple customers are provided. According to one embodiment, a method is provided for delivering customized network services to subscribers of a service provider. Multiple virtual routers (VRs) are provided within each of multiple service processing switches of a service provider. Each VR is supported by an object group and each object of the object group supports a network service. One or more VRs are assigned to a subscriber of multiple subscribers of the service provider. Customized network services are provided to the subscriber by the one or more VRs assigned to the subscriber.