| name | configuring-host-based-intrusion-detection |
| description | Configures host-based intrusion detection systems (HIDS) to monitor endpoint file integrity, system calls, and configuration changes for security violations. Use when deploying OSSEC, Wazuh, or AIDE for endpoint monitoring, building file integrity monitoring (FIM) policies, or meeting compliance requirements for change detection. Activates for requests involving HIDS configuration, file integrity monitoring, OSSEC/Wazuh deployment, or host-based detection.
|
| domain | cybersecurity |
| subdomain | endpoint-security |
| tags | ["endpoint","HIDS","Wazuh","OSSEC","file-integrity-monitoring","intrusion-detection"] |
| version | 1.0.0 |
| author | mahipal |
| license | Apache-2.0 |
Configuring Host-Based Intrusion Detection
When to Use
Use this skill when:
- Deploying HIDS agents (Wazuh, OSSEC, AIDE) across Windows and Linux endpoints
- Configuring file integrity monitoring (FIM) for compliance (PCI DSS 11.5, NIST SI-7)
- Monitoring system configuration changes, rootkit detection, and security policy violations
- Integrating HIDS alerts with SIEM platforms for centralized monitoring
Do not use this skill for network-based IDS (Suricata, Snort) or for EDR deployment.
Prerequisites
- Wazuh server (manager) deployed and accessible from endpoints
- Administrative access to target endpoints
- Network connectivity: agents to Wazuh manager on port 1514 (TCP/UDP) and 1515 (TCP enrollment)
- Wazuh dashboard (OpenSearch Dashboards) for alert visualization
- Understanding of critical files/directories to monitor per OS
Workflow
Step 1: Install Wazuh Agent
Windows:
# Download and install Wazuh agent
Invoke-WebRequest -Uri "https://packages.wazuh.com/4.x/windows/wazuh-agent-4.9.0-1.msi" `
-OutFile "wazuh-agent.msi"
msiexec /i wazuh-agent.msi /q WAZUH_MANAGER="wazuh-manager.corp.com" `
WAZUH_REGISTRATION_SERVER="wazuh-manager.corp.com" WAZUH_AGENT_GROUP="windows-workstations"
net start WazuhSvc
Linux (Debian/Ubuntu):
curl -s https://packages.wazuh.com/key/GPG-KEY-WAZUH | gpg --dearmor -o /usr/share/keyrings/wazuh.gpg
echo "deb [signed-by=/usr/share/keyrings/wazuh.gpg] https://packages.wazuh.com/4.x/apt/ stable main" \
> /etc/apt/sources.list.d/wazuh.list
apt-get update && apt-get install wazuh-agent -y
sed -i 's/MANAGER_IP/wazuh-manager.corp.com/' /var/ossec/etc/ossec.conf
systemctl daemon-reload && systemctl enable --now wazuh-agent
Step 2: Configure File Integrity Monitoring (FIM)
Edit agent configuration (/var/ossec/etc/ossec.conf or C:\Program Files (x86)\ossec-agent\ossec.conf):
<syscheck>
<frequency>43200</frequency>
yes
yes
/etc
/usr/bin
/usr/sbin
/bin
/sbin
/boot
C:\Windows\System32
C:\Windows\SysWOW64
%PROGRAMFILES%
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run
HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
/etc/mtab
/etc/resolv.conf
.log$
