If the communication partner of a client node is an encryption communication target node, a DNS Proxy unit in the client node rewrites a response to a name resolution request for the communication partner node of an application from the actual IP address of the communication partner node to a loopback address that changes depending on the communication partner. A target data storage server registers itself within a storage area network fabric to receive a Registered State Change Notification should a SCSI initiator become inactive. A method of increasing bioavailability of a thiol compound by creating a prodrug by phosphorylating a thiol compound, administering the prodrug, preventing first pass metabolism of the prodrug, removing a phosphate group from the prodrug, and providing active drug to a site in need of therapy from oxidative stress.