Security

Encrypting backup tapes

Backup should be keeping your customer’s data secure as well as safe. Forget to encrypt data written to tapes and they run the risk of having to explain it to the auditor when a courier loses them.

Encrypt at the application level (before it is sent to the backup device) and you only need to encrypt the data you care about, which can make data restoration and validation easier. And if data is encrypted in the application, rather than when it is written to the backup media, it’s less likely to be sent in the clear from the application across the network, which can introduce vulnerabilities elsewhere in the system.

On the other hand, applying granular backup policies to application data can be a complex and gruelling process, because you’re likely to have to build that directly into the server application’s database.

Encrypting at the point of backup gives you two options: an in-line encryption device from a company like CipherMax (www.ciphermaxinc.com), or a system that encrypts directly on the device. The LTO 4 standard for tape drives from the LTO Consortium now includes native AES encryption capabilities, so that the device itself handles backup.

Check how you manage the keys; most encryption software has its own key management capabilities, but with several customers to deal with you’ll want to centralise it. The forthcoming IEEE 1619.3 standard, defining how a key manager sends keys to a device like a tape drive, or an application, promises better separation between the management system and the device using the key.

Link to a Relevant Feature Click here to go to the main feature - Specifying and Supporting Disk Encryption

 


 
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If you're supporting en users who need to transfer files by FTP occasionally, explaining how to use FTP every time can get frustrating. Map an FTP site as a custom network location and they can do it through the familiar Explorer window. If you only have a couple of machines you can choose Tools >Map Network Drive… in Explorer and click the link 'Connect to a Web site that you can use to store your documents and pictures' to open a wizard that creates a network location. Select 'Choose a custom network location', type in the FTP address and fill in the user name and password. You can also create mapped drives and network places on the Environment tab of the user's Active Directory object - but if you have a lot of users to set up, put it in the logon script for the user profile under Active Directory Users and Computers.
If you're running into problems with Group Policy Objects, check this handy summary of the rules at http://support.microsoft.com/kb/555991/en-us. read more

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