High Availability (HA)

High Availability (HA) allows you to deploy groups of Screens together in situations where the connection between a protected inside network and a insecure outside network is critical. At any time, one member of the HA cluster is the active Screen. It performs packet filtering, network address translation, logging, and encryption or decryption of packets travelling between the inside and outside networks. The other members of the HA cluster, the passive Screens, receive the same packets and perform the same calculations as the active Screen, and mirror the state of the active Screen, but they do not forward traffic.