Agent skill

Configuring Host Based Intrusion Detection

by mukul975 in mukul975/Anthropic-Cybersecurity-Skills

Configures host-based intrusion detection systems (HIDS) to monitor endpoint file integrity, system calls, and configuration changes for security violations.

Apache-2.0Auto-check passedSecurity

Install Configuring Host Based Intrusion Detection

skills CLI
$ npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill configuring-host-based-intrusion-detection -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install mukul975/Anthropic-Cybersecurity-Skills configuring-host-based-intrusion-detection --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/mukul975/Anthropic-Cybersecurity-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/configuring-host-based-intrusion-detection .claude/skills/configuring-host-based-intrusion-detection && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
configuring-host-based-intrusion-detection
GitHub stars
34k
Token cost
~2.1k tokens
SKILL.md length
381 words
Files
8 (incl. scripts, references, assets)
Skills in repo
644
Repo updated
First seen
Licence
Apache-2.0

At a glance

Configures host-based intrusion detection systems (HIDS) to monitor endpoint file integrity, system calls, and configuration changes for security violations.

  • Works in 6 steps: Install Wazuh Agent → Configure File Integrity Monitoring (FIM) → Configure Rootkit Detection → …
  • Deploying OSSEC
  • SKILL.md covers When to Use, Prerequisites, Workflow and Key Concepts, plus 2 more sections
  • Runs Python scripts from its folder; calls apt-get and curl; reaches packages.wazuh.com

What it does

Configuring Host Based Intrusion Detection is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. 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.

Its SKILL.md is about 2.1k tokens, which your agent loads only when the skill is triggered. The skill folder holds 10 other files, including scripts, reference files and assets (for example `assets/template.md`, `references/api-reference.md` and `references/standards.md`).

It sits in Security, covering Network security and Anomaly detection. It works with Linux. The repository describes itself as: 817 structured cybersecurity skills for AI agents · Mapped to 6 frameworks: MITRE ATT&CK, NIST CSF 2.0, MITRE ATLAS, D3FEND, NIST AI RMF & MITRE F3 (Fight Fraud) · agentskills.io…. The licence is Apache-2.0.

When your agent uses it

  • Deploying OSSEC
  • AIDE for endpoint monitoring
  • Building file integrity monitoring (FIM) policies
  • Meeting compliance requirements for change detection

Example prompts

  • “Use the configuring-host-based-intrusion-detection skill to configure host-based intrusion detection systems (HIDS) to monitor endpoint file…”
  • “/configuring-host-based-intrusion-detection”

Requirements

  • Python 3

Workflow steps

6 steps, taken from the step headings in SKILL.md.

  1. Install Wazuh Agent
  2. Configure File Integrity Monitoring (FIM)
  3. Configure Rootkit Detection
  4. Configure Log Analysis Rules
  5. Configure Active Response
  6. Integrate with SIEM

What it can do on your machine

Read from SKILL.md and the folder at commit 54a7988. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships 2 files in scripts/ (Python), which the agent can run.

    Shell commands in SKILL.md call:

    • apt-get
    • curl

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    Hosts in commands or code, which the agent is likely to contact:

    • packages.wazuh.com

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Configuring Host Based Intrusion Detection loads about 2.1k tokens when it runs, and up to ~3.2k if it reads all its reference files. Until then it costs about 126 tokens; SKILL.md has 381 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~126
When it runs · the whole SKILL.md, loaded when a task matches
~2.1k
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.2k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); the scripts in this folder are not scanned.

SKILL.md

The full file from mukul975/Anthropic-Cybersecurity-Skills at commit 54a7988, republished under its Apache-2.0 licence (© mukul975). 381 words, ~2,132 tokens.

Download SKILL.mdSave it as .claude/skills/configuring-host-based-intrusion-detection/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.
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
nist_csf
PR.PS-01, PR.PS-02, DE.CM-01, PR.IR-01
mitre_attack
T1059, T1543, T1547, T1070, T1055

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:

powershell
# 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):

bash
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):

xml
<syscheck>
  <!-- Scan frequency: every 12 hours -->
  <frequency>43200</frequency>
  <scan_on_start>yes</scan_on_start>
  <alert_new_files>yes</alert_new_files>

  <!-- Linux critical directories -->
  <directories check_all="yes" realtime="yes">/etc</directories>
  <directories check_all="yes" realtime="yes">/usr/bin</directories>
  <directories check_all="yes" realtime="yes">/usr/sbin</directories>
  <directories check_all="yes" realtime="yes">/bin</directories>
  <directories check_all="yes" realtime="yes">/sbin</directories>
  <directories check_all="yes">/boot</directories>

  <!-- Windows critical directories -->
  <directories check_all="yes" realtime="yes">C:\Windows\System32</directories>
  <directories check_all="yes" realtime="yes">C:\Windows\SysWOW64</directories>
  <directories check_all="yes" realtime="yes">%PROGRAMFILES%</directories>

  <!-- Windows registry monitoring -->
  <windows_registry>HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run</windows_registry>
  <windows_registry>HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce</windows_registry>
  <windows_registry>HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services</windows_registry>

  <!-- Ignore frequently changing files -->
  <ignore>/etc/mtab</ignore>
  <ignore>/etc/resolv.conf</ignore>
  <ignore type="sregex">.log$</ignore>
</syscheck>
Step 3: Configure Rootkit Detection
xml
<rootcheck>
  <disabled>no</disabled>
  <frequency>43200</frequency>
  <rootkit_files>/var/ossec/etc/shared/rootkit_files.txt</rootkit_files>
  <rootkit_trojans>/var/ossec/etc/shared/rootkit_trojans.txt</rootkit_trojans>
  <system_audit>/var/ossec/etc/shared/system_audit_rcl.txt</system_audit>
  <check_dev>yes</check_dev>
  <check_files>yes</check_files>
  <check_if>yes</check_if>
  <check_pids>yes</check_pids>
  <check_ports>yes</check_ports>
  <check_sys>yes</check_sys>
  <check_trojans>yes</check_trojans>
  <check_unixaudit>yes</check_unixaudit>
</rootcheck>
Step 4: Configure Log Analysis Rules
xml
<!-- Custom rules in /var/ossec/etc/rules/local_rules.xml -->
<group name="local,syscheck,">
  <!-- Alert on critical binary modifications -->
  <rule id="100001" level="12">
    <if_sid>550</if_sid>
    <match>/usr/bin/|/usr/sbin/|/bin/|/sbin/</match>
    <description>Critical system binary modified: $(file)</description>
    <group>syscheck,pci_dss_11.5,</group>
  </rule>

  <!-- Alert on new executable in temp directories -->
  <rule id="100002" level="10">
    <if_sid>554</if_sid>
    <match>/tmp/|/var/tmp/</match>
    <description>New file created in temp directory: $(file)</description>
    <group>syscheck,malware,</group>
  </rule>

  <!-- Alert on SSH configuration changes -->
  <rule id="100003" level="10">
    <if_sid>550</if_sid>
    <match>/etc/ssh/sshd_config</match>
    <description>SSH configuration modified</description>
    <group>syscheck,authentication,</group>
  </rule>
</group>
Step 5: Configure Active Response
xml
<!-- Auto-block IP after repeated authentication failures -->
<active-response>
  <command>firewall-drop</command>
  <location>local</location>
  <rules_id>5712</rules_id>
  <timeout>600</timeout>
</active-response>

<!-- Disable account after brute force detection -->
<active-response>
  <disabled>no</disabled>
  <command>disable-account</command>
  <location>local</location>
  <rules_id>100100</rules_id>
  <timeout>3600</timeout>
</active-response>
Step 6: Integrate with SIEM
# Wazuh to Splunk via Filebeat
# Edit /etc/filebeat/filebeat.yml:
filebeat.inputs:
  - type: log
    paths:
      - /var/ossec/logs/alerts/alerts.json
    json.keys_under_root: true
output.elasticsearch:
  hosts: ["https://splunk-hec:8088"]

# Wazuh to Elastic via direct integration
# Wazuh indexer feeds directly into OpenSearch/Elasticsearch
# Dashboard: https://wazuh-dashboard:5601

Key Concepts

TermDefinition
HIDSHost-based Intrusion Detection System; monitors individual endpoints for malicious activity
FIMFile Integrity Monitoring; detects unauthorized changes to files by comparing cryptographic hashes
SyscheckWazuh/OSSEC module for file integrity monitoring and registry monitoring
RootcheckWazuh/OSSEC module for rootkit and malware detection
Active ResponseAutomated defensive action triggered by HIDS alert (IP block, account disable)
CDB ListConstant Database list used for custom lookups in Wazuh rules
Show full SKILL.md (155 more words)Show less

Tools & Systems

  • Wazuh: Open-source HIDS platform (fork of OSSEC) with manager, agent, and dashboard
  • OSSEC: Original open-source HIDS (predecessor to Wazuh)
  • AIDE (Advanced Intrusion Detection Environment): Standalone file integrity checker for Linux
  • Tripwire: Commercial file integrity monitoring solution
  • Samhain: Open-source HIDS focused on file integrity and log monitoring

Common Pitfalls

  • Monitoring too many directories: FIM on entire filesystems generates excessive alerts. Focus on critical system binaries, configuration files, and web roots.
  • Not excluding noisy files: Frequently changing files (logs, temp, caches) generate false positive FIM alerts. Maintain exclusion lists.
  • Ignoring baseline establishment: First FIM scan creates a baseline. Changes detected before baseline stabilization are noise, not threats. Allow 48 hours for baseline.
  • Active response without testing: Auto-blocking IPs or disabling accounts can cause outages. Test active response rules in a non-production environment first.
  • Agent enrollment failures: Agents must successfully enroll with the manager before monitoring begins. Verify firewall rules allow port 1514 and 1515 traffic.

© mukul975, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 7 other files (scripts, references, assets) in skills/configuring-host-based-intrusion-detection of mukul975/Anthropic-Cybersecurity-Skills.

  • SKILL.md
  • LICENSE
  • assets/template.md
  • references/api-reference.md
  • references/standards.md
  • references/workflows.md
  • scripts/agent.py
  • scripts/process.py

Open the folder on GitHubat commit 54a7988

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Works with

Categories

Questions about Configuring Host Based Intrusion Detection

What does Configuring Host Based Intrusion Detection do?

Configures host-based intrusion detection systems (HIDS) to monitor endpoint file integrity, system calls, and configuration changes for security violations. Configuring Host Based Intrusion Detection is an agent skill from mukul975/Anthropic-Cybersecurity-Skills. Configures host-based intrusion detection systems (HIDS) to monitor endpoint file integrity, system calls, and configuration changes for security violations.

When should I use Configuring Host Based Intrusion Detection?

Configuring Host Based Intrusion Detection fits situations like: deploying OSSEC; AIDE for endpoint monitoring; building file integrity monitoring (FIM) policies; meeting compliance requirements for change detection.

How do I install Configuring Host Based Intrusion Detection in Claude Code?

Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill configuring-host-based-intrusion-detection -a claude-code`. Or copy the skill folder (skills/configuring-host-based-intrusion-detection in mukul975/Anthropic-Cybersecurity-Skills) into .claude/skills/configuring-host-based-intrusion-detection in your project. Claude Code loads it when a task matches its description.

How do I install Configuring Host Based Intrusion Detection in Codex?

Run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill configuring-host-based-intrusion-detection -a codex`. Or copy the skill folder (skills/configuring-host-based-intrusion-detection in mukul975/Anthropic-Cybersecurity-Skills) into .agents/skills/configuring-host-based-intrusion-detection in your project. Codex loads it when a task matches its description.

Can I use Configuring Host Based Intrusion Detection in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill configuring-host-based-intrusion-detection -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/configuring-host-based-intrusion-detection, .gemini/skills/configuring-host-based-intrusion-detection, .github/skills/configuring-host-based-intrusion-detection and .opencode/skills/configuring-host-based-intrusion-detection in your project.

What does Configuring Host Based Intrusion Detection need to run?

Going by SKILL.md and its folder, Configuring Host Based Intrusion Detection needs Python for the scripts in its folder and the command-line tools its instructions call (apt-get and curl). Our summary lists: Python 3.

Does Configuring Host Based Intrusion Detection access the network?

SKILL.md names 1 domain. In commands or code: packages.wazuh.com; the agent is likely to contact it when it follows the instructions. This is read from the text; nothing was executed.

Is Configuring Host Based Intrusion Detection safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. The check reads SKILL.md only: the scripts in the folder are not scanned, so read them before running anything.

What licence does Configuring Host Based Intrusion Detection use?

Configuring Host Based Intrusion Detection is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Configuring Host Based Intrusion Detection use?

About 2.1k tokens (SKILL.md is roughly 8.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.1k tokens, read only when the agent opens those files.

What are the alternatives to Configuring Host Based Intrusion Detection?

Skills that share tags, products or a category with Configuring Host Based Intrusion Detection: Kubernetes Network Security Audit (kubeshark/kubeshark, 12k stars), Defender For Containers (vinayaklatthe/microsoft-security-skills, 175 stars), Dt Obs Hosts (Dynatrace/dynatrace-for-ai, 162 stars) and Write Cve Rule (evdenis/cvehound, 138 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Configuring Host Based Intrusion Detection?

mukul975 (a GitHub user) maintains it in mukul975/Anthropic-Cybersecurity-Skills, which has 33,993 GitHub stars. The repository holds 644 skills in this directory. The repository was last updated on August 31, 2026.

Source: mukul975/Anthropic-Cybersecurity-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.