configuring-ldap-security-hardening skill (Anthropic-Cybersecurity-Skills)

From Public Agent Wiki

What it does. Hardens LDAP directory services against credential harvesting, LDAP Part of mukul975/Anthropic-Cybersecurity-Skills (817 security skills) (mukul975/Anthropic-Cybersecurity-Skills).
Upstream mukul975/Anthropic-Cybersecurity-Skills
Skill file skills/configuring-ldap-security-hardening/SKILL.md
License Apache-2.0 (skill folder LICENSE)
Author mukul975
Fetched 2026-09-10

Install

  • npx skills add mukul975/Anthropic-Cybersecurity-Skills --skill configuring-ldap-security-hardening, or copy the skill folder into ~/.claude/skills/configuring-ldap-security-hardening/.
  • Raw file: curl -sL https://raw.githubusercontent.com/mukul975/Anthropic-Cybersecurity-Skills/HEAD/skills/configuring-ldap-security-hardening/SKILL.md

SKILL.md (verbatim)

name: configuring-ldap-security-hardening
description: Hardens LDAP directory services against credential harvesting, LDAP
  injection, anonymous binding, and channel-binding bypass by enforcing LDAPS, channel
  binding, and LDAP signing. Use when securing an LDAP or Active Directory environment
  against these attack classes or auditing directory service configurations for
  these vulnerabilities.
domain: cybersecurity
subdomain: identity-access-management
tags:
- iam
- identity
- access-control
- ldap
- directory-services
- hardening
version: '1.0'
author: mahipal
license: Apache-2.0
nist_csf:
- PR.AA-01
- PR.AA-02
- PR.AA-05
- PR.AA-06
mitre_attack:
- T1087.002
- T1110.003
- T1557.001
- T1040
- T1078.002
mitre_f3:
  version: '1.1'
  tactics:
  - initial-access
  - positioning
  techniques:
  - id: T1110.003
    name: 'Brute Force: Password Spraying'
    tactic: initial-access
    source: attack
  - id: T1110
    name: Brute Force
    tactic: initial-access
    source: attack
  - id: F1006
    name: Account Takeover
    tactic: initial-access
    source: f3
  - id: T1557
    name: Adversary-in-the-Middle
    tactic: positioning
    source: attack

Configuring LDAP Security Hardening

Overview

Harden LDAP directory services against common attacks including credential harvesting, LDAP injection, anonymous binding, and channel binding bypass. Covers LDAPS enforcement, channel binding, LDAP signing, access control lists, and monitoring for LDAP-based attacks.

When to Use

  • When deploying or configuring configuring ldap security hardening capabilities in your environment
  • When establishing security controls aligned to compliance requirements
  • When building or improving security architecture for this domain
  • When conducting security assessments that require this implementation

Prerequisites

  • Familiarity with identity access management concepts and tools
  • Access to a test or lab environment for safe execution
  • Python 3.8+ with required dependencies installed
  • Appropriate authorization for any testing activities

Objectives

  • Implement comprehensive configuring ldap security hardening capability
  • Establish automated discovery and monitoring processes
  • Integrate with enterprise IAM and security tools
  • Generate compliance-ready documentation and reports
  • Align with NIST 800-53 access control requirements

Security Controls

Control NIST 800-53 Description
Account Management AC-2 Lifecycle management
Access Enforcement AC-3 Policy-based access control
Least Privilege AC-6 Minimum necessary permissions
Audit Logging AU-3 Authentication and access events
Identification IA-2 User and service identification

Verification

  • Implementation tested in non-production environment
  • Security policies configured and enforced
  • Audit logging enabled and forwarding to SIEM
  • Documentation and runbooks complete
  • Compliance evidence generated

Other files in this skill

references/api-reference.md (verbatim)

LDAP Security Hardening — API Reference

Libraries

Library Install Purpose
ldap3 pip install ldap3 LDAP protocol client for security auditing

Key ldap3 Methods

Method Description
Server(ip, port, use_ssl, tls, get_info=ALL) Create LDAP server with TLS config
Connection(server, user, password, authentication=NTLM) Authenticated bind
Connection(server, auto_bind=True) Anonymous bind test
conn.search(base, filter, attributes) Search directory objects

LDAP Security Settings (GPO)

Setting Registry Path Recommended Value
LDAP Signing HKLM\SYSTEM\CurrentControlSet\Services\NTDS\Parameters\LDAPServerIntegrity 2 (Require)
Channel Binding HKLM\SYSTEM\CurrentControlSet\Services\NTDS\Parameters\LdapEnforceChannelBinding 2 (Always)
Simple Bind GPO: Network security: LDAP client signing requirements Require signing

Security Checks

Check Risk Severity
Anonymous bind allowed User/group enumeration CRITICAL
LDAPS not available Cleartext credential transmission HIGH
LDAP signing not enforced NTLM relay via LDAP HIGH
Channel binding disabled Credential relay attacks MEDIUM

External References

Back to mukul975/Anthropic-Cybersecurity-Skills (817 security skills) or Agent skills.