# CIS Ubuntu 14.04 LTS - 2.2.13 Ensure HTTP Proxy Server is not enabled

> Verify that Squid HTTP proxy server is disabled when not required

- Skill: `cyberstrikeus/cis-ubuntu-14-04-lts-2-2-13-ensure-http-proxy-server-is-not-` (Agent Skill)
- Install (CLI): `npx skillmds@latest add cyberstrikeus/cis-ubuntu-14-04-lts-2-2-13-ensure-http-proxy-server-is-not-`
- Raw SKILL.md: https://api.skillmd.com/api/skills/cyberstrikeus/cis-ubuntu-14-04-lts-2-2-13-ensure-http-proxy-server-is-not-/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-2-2-13-ensure-http-proxy-server-is-not-

---


# 2.2.13 Ensure HTTP Proxy Server is not enabled (Scored)

## Profile Applicability

- Level 1 - Server
- Level 1 - Workstation

## Description

Squid is a standard proxy server used in many distributions and environments.

## Rationale

If there is no need for a proxy server, it is recommended that the squid proxy be deleted to reduce the potential attack surface.

## Audit Procedure

Ensure no start conditions listed for `squid3`:

```bash
initctl show-config squid3
```

Verify the output shows `squid3` with no start conditions.

## Expected Result

The `squid3` service should have no start conditions listed.

## Remediation

Remove or comment out start lines in `/etc/init/squid3.conf`:

```bash
#start on runlevel [2345]
```

## Default Value

Squid proxy server is not enabled by default.

## References

- CIS Controls: 9.1 Limit Open Ports, Protocols, and Services

## Profile

- Level 1 - Server
- Level 1 - Workstation