How secure is ssh-chat compared to other chat servers?

It leverages SSH's public key authentication, providing strong security out-of-the-box, but lacks encryption for chat messages beyond the SSH connection itself, so it's secure for authentication but basic in chat protection.

Can I use ssh-chat with multiple chat rooms?

No, the README and features indicate a single chat room interface; there's no built-in support for multiple rooms or channels, limiting its use for organized group discussions.

How to set up ssh-chat on a Raspberry Pi?

Download the ARM6 binary from the releases, then run it with commands like --bind for port configuration; the pre-compiled releases make deployment straightforward on embedded devices.

What are the main limitations of ssh-chat?

It's text-only, requires SSH clients, and has basic admin controls; for example, no file transfers or rich formatting, which might not suit teams needing more interactive features.

Ssh-chat or IRC – which is better for terminal users?

Ssh-chat is simpler with built-in SSH security and no extra client setup, but IRC offers more features like channels and bots; choose ssh-chat for quick, secure chats or IRC for functionality.

How to manage users and permissions in ssh-chat?

Use the --allowlist and --admin flags with files containing public keys; this allows fine-grained control but requires manual key management, as detailed in the command-line options.

Open-Awesome

ssh chat

MITGov1.10

A custom SSH server written in Go that provides a chat prompt instead of a shell.

Visit Website GitHub

5.9k stars429 forks0 contributors

What is ssh chat?

ssh-chat is a custom SSH server written in Go that provides a chat interface instead of a traditional shell. When users connect via SSH, they enter a chat room where they can communicate with other connected users in real-time. It repurposes the SSH protocol for secure, text-based messaging without requiring additional chat clients.

Target Audience

System administrators, developers, and technical users who want to set up simple, secure chat rooms using existing SSH infrastructure and clients.

Value Proposition

ssh-chat offers a unique approach to chat by leveraging the ubiquitous SSH protocol, eliminating the need for separate chat software while providing built-in authentication security. It's lightweight, portable, and can be self-hosted with minimal configuration.

Overview

Chat over SSH.

Use Cases

Best For

Setting up quick chat rooms for team collaboration using existing SSH credentials
Creating secure communication channels for system administrators
Building terminal-based chat interfaces for technical communities
Experimenting with SSH protocol extensions and custom servers
Providing chat access in environments where only SSH connectivity is available
Running lightweight chat servers on Raspberry Pi or other embedded devices

Not Ideal For

Teams needing rich media support or file sharing in chat
Non-technical users who require graphical interfaces
Environments where SSH ports are blocked or restricted
Projects requiring advanced chat features like private messages or bots

Pros & Cons

Pros

Secure Authentication

Uses SSH public key authentication for secure user identification, eliminating the need for additional passwords or accounts, as highlighted in the key features.

Portable and Lightweight

Provides pre-compiled binaries for multiple platforms including Linux, macOS, and ARM, making deployment easy on devices like Raspberry Pi without compilation.

Easy Self-Hosting

Quick start with minimal configuration options like binding ports and identity files, allowing rapid setup for custom chat servers as shown in the usage examples.

Unique Protocol Use

Repurposes the ubiquitous SSH protocol for chat, leveraging existing trust and infrastructure, which is core to its philosophy.

Cons

Limited Feature Set

Focuses solely on basic text chat without support for advanced features like channels, private messaging, or media sharing, which might hinder collaboration.

SSH Client Dependency

Requires all users to have SSH clients and manage keys, creating a barrier for non-technical participants and complicating onboarding.

Admin Management Overhead

Admin controls rely on public key allowlists without GUI tools, making user management cumbersome for larger teams or dynamic environments.

Frequently Asked Questions

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