Remote Mirroring

Mirror image backups (also referred to as bitstream backups) involve the backup of all areas of a computer hard disk drive or another type of storage media (e. g. , Zip disks, floppy disks, Jazz disks, etc. ). Such mirror image backups exactly replicate all sectors on a given storage device. Thus, all files and ambient data storage areas are copied. Such backups are sometimes referred to as “evidencegrade” backups and they differ substantially from standard file backups and network server backups. The making of a mirror image backup is simple in theory, but the accuracy of the backup must meet evidence standards. Accuracy is essential and to guarantee accuracy, mirror image backup programs typically rely on mathematical CRC computations in the validation process. These mathematical validation processes compare the original source data with the restored data. When computer evidence is involved, accuracy is extremely important, and the making of a mirror image backup is typically described as the preservation of the “electronic crime scene. ”
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Proxy server is a server that acts as an intermediary between a remote user and the servers that run the desired applications. Typical proxies accept a connection from a user, make a decision as to whether or not client IP address is permitted to use the proxy, perhaps perform additional authentication, and complete a connection to a remote destination on behalf of the user.
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A backup that stores only those files that have been modified since the time of the most recent full or incremental backup. This is also used to mean the process of creating such a backup.
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A workstation in a network that is set up to use the resources of a server. Individual or process acting on behalf of an individual who makes requests of a guard or dedicated server. The client’s requests to the guard or dedicated server can involve data transfer to, from, or through the guard or dedicated server.
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An attack in which a malicious user records the traffic between a client and server. The packets sent from the client to the server are then played back or retransmitted to the server with slight variations of the time stamp and source IP address (in other words, spoofing). In some cases, this allows the malicious user to restart an old communication link with a server. Also referred to as a playback attack.
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