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Change Auditor Threat Detection 7.1.1 - Deployment Guide

Requirements and prerequisites

For a successful deployment, ensure that your environment meets the minimum system requirements.

The Threat Detection server deployed on VMWare ESX is available in both 8 and 16 cores versions.
For a Hyper-v deployment, a single server is available and you select the number of cores during the deployment.

* 
NOTE: The number of cores impact the length of time it takes to process historical audit data and build the baseline. 16 cores is recommended, 8 cores can be used if processing less than 5 million events per day.
Deployment on VMWare ESX
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VMWare ESXI version 5.5 and above which is managed by VMware Vcenter 5.5 and above
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The following vSphere clients are supported:
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With ESX 5.5 - vSphere Windows client.
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With ESX 6.0 - vSphere Flash client.
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With ESX 6.5 - vSphere Flex client, vSphere HTML5 client.
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Small and medium sized enterprise edition OVA:
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OVA file size: ~10GB
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CPU: 8 cores, Minimal 2.3 GHz, Recommended 2.4 GHz
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RAM: 64 GB
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I/O: 500 MB/sec
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Disk: SAS 320 GB, SAS 930 GB
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Large sized enterprise edition OVA:
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OVA file size: ~10GB
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CPU: 16 cores, Minimal 2.3 GHz, Recommended 2.4 GHz
•
RAM: 64 GB
•
I/O: 500 MB/sec
•
Disk: SAS 320 GB, SAS 930 GB
Deployment on Microsoft Hyper-V
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Hyper-V host which running on Windows server 2016
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Threat Detection server requirements:
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Template size: ~10 GB
•
CPU: 8 or 16 cores, Minimal 2.3 GHz, Recommended 2.4 GHz.
•
RAM: 64 GB
•
I/O: 500 MB/sec
•
Disk: SAS 320 GB, SAS 930 GB.

For all deployments:

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Obtain a static IP address for Threat Detection server and add DNS (A) record for it.
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Determine the number of historical days to use for your activity baseline. For information on how to determine the best amount for you, see Historical events and your baseline calculations.

Events to configure

Events to configure
* 
NOTE: Consider Maintaining the Change Auditor database size when adding events for Threat Detection auditing.

Events from the following modules are used to build models and generate alerts:

Table 1. Events used for modeling and alerts
Module
Events

Change Auditor for Logon Activity

Authentication Activity events – these are the successful and failed interactive and remote interactive events (all enabled by default).

Domain Controller Authentication events – Ensure that you enable the ‘User authenticated through Kerberos” event. By default, it is disabled.

Change Auditor for Active Directory

User and group events (all enabled by default).

Change Auditor for Windows File Servers

Change Auditor for EMC

Change Auditor for FluidFS

Change Auditor for NetApp

For optimal Threat Detection results, Quest recommends that you select file, folder, and share events that audit permission changes, create, delete, rename, and open actions during the template creation.

Port Requirements

The following ports are required for Threat Detection server operation:

Table 2. Port requirements
Component
Ports

Coordinator to Threat Detection server
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SSH TCP 22 - Facilitates Threat Detection server upgrades and maintenance.
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HTTPS TCP 443 - Creation, removal, and operation of Threat Detection subscription.

Change Auditor client and Chrome web browser to Threat Detection server
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HTTPS TCP 443 - Threat Detection dashboard and interface.

 

Threat Detection server to Active Directory
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LDAP TCP/UDP 389 - Active Directory services.
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Global Catalog (GC) TCP 3268 - Active Directory services.
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DNS UDP 53 - Name resolution.
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Kerberos TCP 88 - Kerberos authenticated connections.

Maintaining the Change Auditor database size

Some of the events required for Threat Detection can be very noisy and take up significant space in the Change Auditor database. Once the events are sent to the Threat Detection server for analysis storage in the Change Auditor database is no longer needed.

To ensure the database maintains a manageable size, Quest recommends that you purge events older than 30 days.

Particularly noisy events are:

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User authenticated through Kerberos
•
File and folder open
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