# CIS Ubuntu 14.04 LTS - 2.3.5 Ensure LDAP client is not installed

> Verify that the LDAP client (ldap-utils) package is not installed

- Skill: `cyberstrikeus/cis-ubuntu-14-04-lts-2-3-5-ensure-ldap-client-is-not-install` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-ubuntu-14-04-lts-2-3-5-ensure-ldap-client-is-not-install`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-ubuntu-14-04-lts-2-3-5-ensure-ldap-client-is-not-install/raw
- Safety review: PASS (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: cyberstrikeus (https://skillmd.com/u/cyberstrikeus)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/cyberstrikeus/cis-ubuntu-14-04-lts-2-3-5-ensure-ldap-client-is-not-install

---


# 2.3.5 Ensure LDAP client is not installed (Scored)

## Profile Applicability

- Level 1 - Server
- Level 1 - Workstation

## Description

The Lightweight Directory Access Protocol (LDAP) was introduced as a replacement for NIS/YP. It is a service that provides a method for looking up information from a central database.

## Rationale

If the system will not need to act as an LDAP client, it is recommended that the software be removed to reduce the potential attack surface.

## Audit Procedure

Run the following command and verify `ldap-utils` is not installed:

```bash
dpkg -s ldap-utils
```

## Expected Result

The command should indicate that the package is not installed (e.g., `dpkg-query: package 'ldap-utils' is not installed`).

## Remediation

Uninstall `ldap-utils` using the appropriate package manager or manual installation:

```bash
apt-get remove ldap-utils
```

## Default Value

ldap-utils is not installed by default.

## Impact

Removing the LDAP client will prevent or inhibit using LDAP for authentication in your environment.

## References

- CIS Controls: 2 Inventory of Authorized and Unauthorized Software

## Profile

- Level 1 - Server
- Level 1 - Workstation