Jumper

Secure Ncurses-like SSH Jump Server

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This project provides a secure SSH jump server frontend for Linux systems. Jumper features an intuitive, ncurses-inspired interface that makes setup and management straightforward. It automates environment creation, jump target management, and key imports in a clean, user-friendly terminal interface.

Deployment

Prerequisites

• Debian or Red Hat-based Linux system
• OpenSSH Client (ssh) and OpenSSH Server (sshd)

Ubuntu/Debian

For Debian-based systems, see the following installation methods:

APT Repository (Recommended)

curl -s --compressed "https://ameliorated-llc.github.io/jumper/Packaging/PPA/KEY.gpg" | gpg --dearmor | sudo tee /etc/apt/trusted.gpg.d/jumper.gpg >/dev/null
sudo curl -s --compressed -o /etc/apt/sources.list.d/jumper.list "https://ameliorated-llc.github.io/jumper/Packaging/PPA/any.list"
sudo apt update && sudo apt install jumper

Debian Package

curl -sL https://github.com/Ameliorated-LLC/jumper/releases/latest/download/jumper.deb -o jumper.deb && sudo dpkg -i jumper.deb && rm jumper.deb

RHEL/Fedora

For Red Hat-based systems, see the following installation methods:

RPM Package

curl -sL https://github.com/Ameliorated-LLC/jumper/releases/latest/download/jumper.rpm -o jumper.rpm && sudo rpm -ivh jumper.rpm && rm jumper.rpm

Usage

Initial Setup

To setup jumper after installation, initialize first time setup by running:

sudo jumper

The setup will:

1. Prompt to set an admin password for future access to the jump server's admin interface.
2. Prompt to set a password for a new jump user that will be used with SSH to use jumper.
3. Create the user’s isolated chroot environment and configure sshd_config to run jumper with that user.

If a user named jump already exists, it will ask for a username of choice during setup.

Once setup is complete, SSH into the jump server as the new user:

ssh jump@localhost

Upon logging in, you will be directed to add SSH entries via the secure admin interface.

Configuration

• Configuration files are located at /etc/jumper.

Planned Features

• User management allowing for per-user server access rules from an administrative jumper user
• Key based authentication option for jumper users
• Access log

License

This project is licensed under the MIT License. See the LICENSE file for more details.