Autoremove Data
This objective aids with the large amount of data that Snare Central handles. This allows the Snare administrator to establish scheduled deletion tasks based on data age, log type, log name or agent. Standards like PCI DSS have minimum time retention on logs, and the Autoremove Data capability allows automatic purging of Snare data after a defined period of time. This also aids with keeping disk space under control. This feature is flexible enough to support different log data aging criteria for different types of data or different sources of the data (agents). This is very important due to the diverse events that Snare Central manages.
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It is required to establish an age criteria to match against using the Older than and units fields.
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A Test button is provided for testing the matching and age criteria upon the actual Snare data showing a list of files that will be affected by the task.
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Snare can backup data to optical, or removable USB media. Select a device type to continue to the data archival process.
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Optical Media - Interactive
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A 'fuel gauge' indicator is available to the right of the dialog, and provides an indication of the current fill state of the CD or DVD.
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After clicking the 'Next' button, a new dialog will appear, showing the status of the transfer.
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Once the process has completed, the dialog will offer you the opportunity to display, or remove the files that have been transferred to CD/DVD.
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| Snare validates the CD or DVD after generation, to make sure that files of the correct name and size have been copied to the optical media. However, for peace of mind, it is highly recommended that the physical media, and contents, be checked on another server before the files that have been migrated off the server, are removed from the Snare data archive. |
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If you have chosen to generate an ISO image, the image file will be available for download from the front objective output page. You can also choose to remove the CD or DVD from the dialog that pops up when you select the download link, or request an MD5 checksum of the image, to provide a level of assurance that your download matches the image generated by the Snare Server.
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Choosing the 'USB Drive/Key' button will allow you to synchronise all, or a portion of your current event log data, with a USB device.
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Existing data already present on the device will be compared against the current contents of your data archive, and only new, or changed, data will be copied across to the target device. Data that already exists on the target device, but has been removed from the Snare Server data store, will not be touched.
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| 1 terabyte external USB drives are common, and reasonably cheap. A 1 terabyte external USB drive can hold somewhere near 40-50 terabytes of compressed snare log data - which is roughly equivalent to a year's worth of data at 5,000 events every second, for the entire year. |
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