# FTP Cleartext Communication

> Detects use of FTP protocol which transmits credentials and data in cleartext.

- Skill: `zakirkun/ftp-cleartext-communication` (Agent Skill, multi-file: 2 files)
- Install (CLI): `npx skillmds@latest add zakirkun/ftp-cleartext-communication`
- Raw SKILL.md: https://api.skillmd.com/api/skills/zakirkun/ftp-cleartext-communication/raw
- Safety review: pending
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: zakirkun (https://skillmd.com/u/zakirkun)
- Updated: 2026-09-17
- Page: https://skillmd.com/skills/zakirkun/ftp-cleartext-communication

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# FTP Cleartext Communication

## Overview
FTP (File Transfer Protocol) transmits all data including credentials in plaintext. Network monitoring captures:
- Login credentials (USER/PASS commands)
- All file transfers
- Directory listings

FTP is deprecated and should be replaced with SFTP (SSH File Transfer Protocol) or FTPS (FTP over TLS).

## Remediation
- Use SFTP instead of FTP
- If FTP must be used, require explicit TLS (`AUTH TLS`) — FTPS
- Use `Paramiko` (Python), `ssh2` (Node.js), or native SSH libraries