You can find my mind-map for CCNP security 642-647 / 642-648 (Deploying Cisco ASA VPN Solutions) here (click here) You may download the image. In case the image refuses to open or is marked as corrupted, change the extension from .jpg to .png Enjoy! 🙂
Creating a custom Nagios/Centreon passive alerter
Scenario: This is very probably a familiar problem that any sysadmin must solve: Using your monitoring setup to receive alerts from other servers. Note the highlighted "receive". This is different from the standard poll / check that come out of the box with Nagios. Say for example, you would like to receive an alert whenever … Continue reading Creating a custom Nagios/Centreon passive alerter
David Vassallo's Blog 
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