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A blessed subnet is a network that has been that Open-AudIT will accept audit results from. Each network you wish to post data to Open-AudIT from HAS to be in this list to use this feature.
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When an audit result is accepted the first thing checked is the sending ip IP address and a test is run to determine if that ip is IP iis in one of the blessed subnets. If it is not (and the feature is enabled), then audit result is discarded and a log entry created.
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The list can be viewed at menu -> Admin Manage -> Networks -> View List Networks.
Networks can be added to the list at menu -> Admin Manage -> Networks -> Add NetworkCreate Networks.
Networks can have a description added by clicking the Edit Network link on the View Network page.
You can disable the feature in the config (menu -> Admin -> Configuration -> ConfigAll) by changing the value of blessed_subnets_use to 'n' (sans quotes).
New Installs
On a new install, the feature is enabled and the typical user should see nothing different. Running discovery will work as normal.
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You may need to populate the networks in advance if you are running remote audit hosts (other Open-AudIT instances) that submit back to the main instance. This is an unusual setup and Opmantek are only too happy to help with support if required.