Use IPsec (IP Security) and IKE (Internet Key Exchange) to protect the confidentiality and integrity of inter-zone IP-based communications and NFS traffic flowing over the network. IPsec is recommended because it supports network-level peer authentication, data origin authentication, data confidentiality, data integrity, and replay protection. When used on the Oracle MiniCluster platform, IPsec and IKE are able to automatically take advantage of hardware- assisted cryptographic acceleration, thereby minimizing the performance impact of using cryptography to protect sensitive information flowing over this network channel.