SSH Server Setup Script

Simplify your workflow with key-based SSH access! This script automatically sets up your remote server so that, once configured, you can connect without entering a password. After running the setup, simply use:

ssh {serverName}

Replace {serverName} with the alias you chose during setup, and enjoy an automatic, secure login.

Features

• Single SSH Key:
  Utilizes one RSA key pair for all servers.
• Automatic SSH Config:
  Adds or updates your SSH configuration file so you can connect via server aliases.
• Key Deployment:
  Automatically copies your public key to the target server if key-based authentication is not already set up.
• Portability:
  Designed to work on both macOS and Linux.

Requirements

• Bash
• ssh, ssh-keygen, and ssh-copy-id (usually available on Unix-like systems)

Installation

1. Clone this repository:

   git clone https://github.com/ehzack/ssh-server-setup.git
   cd ssh-server-setup

2. Make the script executable:

   chmod +x setup_ssh.sh

Usage

Run the script with the following parameters:

./setup_ssh.sh <server_alias> <server_ip> <username>

After running the script:

• A new RSA key pair is generated (if not already available).

• Your public key is deployed to the server.

• Your SSH configuration is updated so that you can simply type:

  ssh <server_alias>

to log in automatically without a password.

How It Works

1. SSH Key Generation:
   The script checks for an existing RSA key (~/.ssh/server_id_rsa). If it doesn't exist, a new 4096-bit RSA key pair is created.
2. Public Key Deployment:
   It uses ssh-copy-id to copy your public key to the remote server, enabling key-based authentication.
3. SSH Config Update:
   An entry is added or updated in your ~/.ssh/config file that maps your server alias to the server's hostname, username, key file, and port.

Contributing

Contributions, bug reports, and feature requests are welcome! Please open an issue or submit a pull request via GitHub Issues.

License

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