The paper presents Global Discovery Service (GDS), configuration and deployment tools for Grid infrastructure and advanced monitoring services implemented with JMX technology. The GDS service is designed to work over firewalls and could be used not only for resource discovery but offers also mechanisms to take control over resources hidden by firewalls. It creates alternative to SOAP Gateways based on Web Service. The described services have been designed to be scalable and lightweight. They have been put into service within JIMS – Grid infrastructure monitoring system implemented under CrossGrid IST Project.