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AlienVault® USM Anywhere™

Microsoft Windows IIS NXLog

When you configure Microsoft IIS to send logs through NXLog to USM Anywhere, you can use the Windows IIS NXLog plugin to translate the raw log data into normalized events for analysis.

Device Details
Device vendor Microsoft
Device type Web server
Connection type Syslog
Vendor link Collecting Windows System Logs

Integrating NXLog for Microsoft IIS

Before you configure the integration, you must have the IP Address of the USM AnywhereUSM Appliance Sensor.

To configure NXLog to send log data to USM Anywhere

In the NXLog configuration file, AlienVault includes two different sections for IIS, IIS-NXLOG and IIS-NXLOG-Extended, with the latter collecting some additional fields from the IIS log. These fields include cs-host, sc-bytes, cs-bytes, and x-forwarder-for.

Important: Do not uncomment both sections because it will generate duplicate events in USM Anywhere.

Plugin Enablement

The Windows IIS NXLog plugin will automatically process all messages when the raw message contains SourceModuleName":"IIS_Logs, SourceModuleName":"IIS_IN, or SourceModuleName":"IIS_Extended_IN.

Available Plugin Fields

The following plugin fields are important attributes extracted from the syslog message. USM Anywhere reports use these fields, and you can also reference them when creating custom reports. In addition to reporting, the USM Anywhere correlation rules make use of these fields.

  • timestamp_occured

  • source_address

  • destination_address

  • destination_port

  • source_username

  • request_user_agent

  • response_code

  • request_referrer

  • request_url

  • request_method

  • duration

  • event_name

Troubleshooting

For troubleshooting, refer to the vendor documentation:

https://www.iis.net/learn/troubleshoot