A Fault-Tolerant Approach to Network Security

The increasing use of the Internet, especially for internal and business-to-business applications has resulted in the need for increased security for all networked systems to avoid unauthorized access and use. A failure of network security can effectively close the business, its availability is vital to operations. Vital functions such as firewalls and VPNs must remain in operation without loss of time for failover, without loss of data and must be able to be placed even at remote locations where support personnel may not be readily available.