Tag Archives: FireEye HX

Asset Inventory for Internal Network: problems with Active Scanning and advantages of Splunk

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In the previous post, I was writing about Asset Inventory and Vulnerability Scanning on the Network Perimeter. Now it’s time to write about the Internal Network.

Typical IT-infrastructure of a large organization

I see a typical IT-infrastructure of a large organization as monstrous favela, like Kowloon Walled City in Hong Kong. At the beginning it was probably wisely designed, but for years it  was highly effected by spontaneous development processes in various projects as well as multiple acquisitions. And now very few people in the organization really understand how it all works and who owns each peace.

There is a common belief that we can use Active Network Scanning for Asset Inventory in the organization. Currently, I’m not a big fan of this approach, and I will try to explain here the disadvantages of this method and mention some alternatives.

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Sending FireEye HX data to Splunk

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FireEye HX is an agent-based Endpoint Protection solution. Something like an antivirus, but focused on Advanced Persistent Threats (APT). It has an appliance with GUI where you can manage the agents and see information about detected security incidents.

As with any agent-based solution, it’s necessary to ensure that the agents are installed on every supported host in your network. You may also want to analyze the alerts automatically. And for both purposes you can use Splunk. Let’s see how to do it. 😉

FireEye HX appliance login screen

Note, everything bellow is for FireEye Endpoint Security (HX) 4.0.6 and Splunk 7.0.2. If you use some other version, the things may be quite different.

The main idea is following. We should present FireEye hosts and alerts data in JSON format, add some mandatory fields ans send this packages to Splunk using HTTP Event connector. Then we can process it in Splunk like I’ve shown in “How to correlate different events in Splunk and make dashboards“.

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