Friday, June 19, 2009

Using Device Mapper Can Protect Data in Linux?

Device Mapper providing the foundation of dm_crypt disk encryption in Linux.It is used to serve many purposes like mapping one block device to another and supporting logical volume management. Many users want that their data on the hard disk should remain encrypt else to be used by any wrong person. If your data is encrypted then either your computer system has got stolen or some nasty user is trying to get access to your data, you are pretty safe from the data leak point of view.

Using dm_crypt which is a see-through disk encryption subsystem in Linux Kernel and can be applied through Device Mapper as it is a part of its infrastructure only. Enabling the Device Mapper will allow you to create new logical block devices from portions of existing devices. The block devices then are mapped to devices that for our use are treated like normal drive partitions.

Once device-mapper is enabled, you then can enable dm-crypt itself; it goes by the name Crypt Target Support in the kernel configuration menu. After this loopback device support is enabled to use ordinary files as if they were real block devices and then the encryption type chosen is compiled into the kernel or set as a module.

The device mapper utility is then required to be installed and then the further procedure of encryption is carried out after this configuration. But in few of the cases you may not be able to access your data even which you had encrypted to prevent access of other unwanted users and you need Linux data recovery.

These are the cases when there is some accidental or intentional formatting of your disk, virus attack, system failure or some server corruption errors. This creates a weird situation to the users. It quite obvious that the data, you had encrypted, is itself so relevant that suffering data loss due to some of these kinds of reasons is not appreciable. In this case Linux data recovery comes at the most urgent category.

This Linux Recovery software scan the hard disk to retrieve the precious data and possess some of the most powerful features like support to for Ext2, Ext3 and Reiser FS file system volumes, user- friendly interface, view to the properties of recoverable files and folders and lots many.

This Linux data recovery software can recover file and folders under sub-directories even the parent directory is deleted or missing. Seeking the importance of time to the users, this Linux data recovery software has a feature through which you can halt the scanning process and view the results.

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