Deploy and Host Kali Linux Terminal on Railway

Kali Linux Terminal is a browser-accessible Kali Linux Rolling shell deployed on Railway via ttyd. Pre-loaded with popular pentesting and CTF tools, common C/system dev libraries, password-protected access, and persistent storage at /root that survives restarts. No local VM required.

About Hosting Kali Linux Terminal on Railway

Hosting Kali Linux Terminal on Railway means running a Kali Linux Rolling container with a browser-based terminal exposed via ttyd. Kali Rolling pulls from the latest Kali repositories, keeping your security tools up to date on every redeploy. Railway handles the build, networking, and SSL automatically. The image ships with commonly used C libraries — libssl-dev, zlib1g-dev, libffi-dev, libsqlite3-dev, libreadline-dev, libncurses5-dev, libxml2-dev, libxslt1-dev, libpq-dev, default-libmysqlclient-dev, libyaml-dev, libpng-dev, libjpeg-dev, and linux-headers — so language runtimes and native extensions compile without extra setup. A persistent volume is mounted at /root so your wordlists, scripts, and notes survive restarts. Expect build times of 3–5 minutes due to the size of the security toolset.

Common Use Cases for a Cloud-Hosted Kali Linux Terminal

CTF (Capture The Flag) challenges from any browser without a local Kali installation
Penetration testing practice against your own lab or authorized targets
Security research and tool experimentation in a disposable, cloud-hosted environment

Dependencies for Kali Linux Terminal Hosting

ttyd — serves the bash shell as a browser-accessible terminal over HTTP
Kali Linux Rolling — Debian-based security-focused distribution with a large offensive toolset

Deployment Dependencies

Implementation Details

```bash

Install full Kali tool groups

apt-get install -y kali-tools-web # web app testing apt-get install -y kali-tools-wireless # wireless attacks apt-get install -y kali-tools-forensics # digital forensics apt-get install -y kali-tools-passwords # password tools ```

> ⚠️ Legal Notice: Use only on systems you own or have explicit written permission to test. Unauthorized use is illegal.

Configuration

Variable	Description
USERNAME	Login name for the web terminal. Defaults to `root`.
PASSWORD	Login password. Generated for you at deploy time — read it from the service's Variables tab, or set your own before deploying.
PORT	Port ttyd listens on. Defaults to `7681`; Railway maps it to the public URL for you.
INSTALL_CLAUDE_CODE	Set to `true` to install Claude Code on first boot (default: false).

Opening the service URL prompts for USERNAME and PASSWORD over HTTP Basic auth. The terminal is a root shell on the public internet, so treat that password as the only thing standing between a stranger and your container — change it from the generated value only to something stronger, never something weaker.

A volume is mounted at /root, so files you leave in the home directory survive restarts and redeploys. Packages installed with the system package manager live outside /root and do not survive a redeploy — reinstall them, or bake them into the image if you need them permanently.

Claude Code in the terminal (optional)

Set INSTALL_CLAUDE_CODE to true and Claude Code is installed on first boot, into /root/.local/bin on the volume — so it survives restarts and keeps itself updated. It is off by default, which keeps the image small for everyone who does not want it.

The install happens at boot rather than at build time on purpose: /root is the mounted volume, so anything written there while building is hidden the moment the volume mounts.

You still need your own access — a Claude Pro, Max or Team account, or an ANTHROPIC_API_KEY with credit on it. Nothing in the install can stop the terminal from starting; if it fails, you get a message and a working shell.

Why Deploy Kali Linux Terminal on Railway?

Railway is a singular platform to deploy your infrastructure stack. Railway will host your infrastructure so you don't have to deal with configuration, while allowing you to vertically and horizontally scale it.

By deploying Kali Linux Terminal on Railway, you are one step closer to supporting a complete full-stack application with minimal burden. Host your servers, databases, AI agents, and more on Railway.