The modern health care environment requires close coordination and constant exchange of information between health care providers, health care plans and employers. Eligibility checks and approvals have to be performed often in real-time with information flowing electronically between different entities. At the same time, the confidentiality of health care information has to be protected for workers and their families. With the growth of large health care providers and health care plans, clinics & branch offices are geographically distributed. Hence, a secure, reliable network infrastructure is required to connect the clinics and branch offices with their headquarters and main information processing centers.