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Awesome SSH

A curated list of SSH apps, libraries and resources.

Inspired by the awesome list thing.

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Table of Contents

• Apps
  • .ssh/config
  • Tools using the SSH protocol
  • Servers
  • Network
  • Multiplexers
  • SSH Keys / Authentication
  • SSH agent
  • Tools
  • Automation
  • Web
  • Testing / Honeypots
  • Alternatives to SSH
• Libraries
• Resources
  • Tutorials
  • Security
  • Documentation
  • Community

Apps

.ssh/config

• assh - Transparent wrapper (ProxyCommand) that adds regex, aliases, gateways, includes, dynamic hostnames to SSH and ssh-config. Previously: advanced-ssh-config
• storm - Manage your SSH like a boss.
• ansible-ssh-config - Letting Ansible manage ssh_config.
• ec2ssh - A ssh_config manager for AWS EC2.
• ssh-config - A tool to help manage your .ssh/config file.

Tools using the SSH protocol

• scp - Secure remote file copy utility over SSH.
• rsync - Fast incremental transfer utility that supports SSH.
• sftp - File transfer protocol over SSH.
• curl - Command line tool and library to transfer data (support sftp).

Servers

• sshportal - simple, fun, and transparent SSH (& Telnet) Bastion Server
• ssh2docker - SSH server to Docker containers.
• ssh-proxy - Dockerized SSH bastion to proxy SSH connections to arbitrary containers.
• whosthere - A SSH server that knows who you are. $ ssh whoami.filippo.io.
• sshfront - Programmable SSH frontend.
• ssh-chat - Chat over SSH.
• sshcommand - Turn SSH into a thin client specifically for your app.
• sshmuxd - sshmux frontend.
• x84 - A python telnet/ssh server for modern UTF-8 and classic cp437 network virtual terminals. In spirit of classic software such as ami/x, teleguard, renegade, iniquity.
• teleport - Modern SSH server for clusters and teams.
• ShellHub - A SSH gateway for remotely accessing any Linux device behind firewall and NAT.

Network

• Mosh - The mobile shell.
• sshfs - Filesystem client based on the SSH File Transfer Protocol.
• ngrok - Introspected tunnels to localhost.
• localtunnel - Expose localhost servers to the Internet.
• sshuttle - Transparent proxy server that works as a poor man’s VPN. Forwards over ssh. Doesn’t require admin. Works with Linux and MacOS. Supports DNS tunneling.
• sshttp - SSH/HTTP(S) multiplexer. Run a webserver and a sshd on the same port w/o changes.
• switcher - Run SSH and HTTP(S) on the same port.
• sslh - Applicative Protocol Multiplexer (i.e: SSH + HTTPS).
• tund - SSH reverse tunnel daemon.
• autossh - Automatically respawn SSH session after network interruption.
• wssh - SSH to WebSockets Bridge.
• docker-volume-sshfs - sshfs docker volume plugin.
• quicssh - QUIC proxy for SSH
• sshpiper - The missing reverse proxy for ssh scp.
• sshhub - Web Service: access your SSH servers behind firewalls (ssh-teamviewer).

Multiplexers

• tmux - Terminal multiplexer.
• clusterssh - Cluster admin via SSH.
• tmux-cssh - tmux with a ClusterSSH-like behavior.
• tm - tmux manager / helper.
• i2cssh - csshX like SSH tool for iTerm2.
• ClusterSSH - Controls a number of xterm windows via a single graphical console.

SSH keys / Authentication

• authy-ssh - Easy two-factor authentication for SSH servers.
• github-auth - SSH key management for GitHub users.
• cipherhub - Encrypt messages based on SSH public keys with easy import from GitHub.
• Slack notifications (archived version) - Guide to setup Slack notifications (can be modified for other services).
• totp-ssh-fluxer - A way to make sure your sshd port changes every 30 seconds.
• github-keygen - Easy creation of secure SSH configuration for your GitHub account(s).
• kr - Kr agent that route access request to the paired mobile phone where Kryptonite is installed.
• ServerAuth - Automatically sync SSH access across servers
• HIBA - Central management of access to a fleet of machines without pushing authorized_users files.

SSH agent

• ssh-ident - Different agents and different keys for different projects, with ssh.
• oh-my-zsh/plugins/ssh-agent - ssh-agent plugin for zsh.
• sshecret - Automatically create and manage multiple agents for multiple keys.

Tools

• xxh - Bring your favorite shell wherever you go through the ssh.
• sshrc - Bring your .bashrc, .vimrc, etc. with you when you ssh.
• kyrat - SSH wrapper script that brings your dotfiles always with you on Linux and OSX.
• ssh-vault - encrypt/decrypt files using ssh keys
• ssh-ping - check if host is reachable using ssh_config
• SSHPry v2 - Spy & Control os SSH Connected client’s TTY
• redial - Terminal Based SSH Session Manager for Unix Systems

Automation

• Ansible - App deployment, configuration management and orchestration over SSH.
• rtop - Interactive, remote system monitoring tool based on SSH.
• DSH - Dancer’s shell / distributed shell - Wrapper for executing multiple remote shell commands from one command line.
• parallel-ssh - Provides parallel versions of OpenSSH and related tools.
• SSH Power Tool - Execute commands and upload files to many servers simultaneously without using pre-shared keys.

Web

• Secure Shell chrome extension
• GateOne - HTML5-powered terminal emulator and SSH client.
• KeyBox - Web-based SSH console that centrally manages administrative access to systems.
• Apache Guacamole - Apache Guacamole is a HTML5 based clientless remote desktop gateway. It supports standard protocols like VNC, RDP, and SSH.
• SSHmon - Real-time GUI to monitor SSH connections and establish port forwardings.

Testing / Honeypots

• ssh-hammer - SSH load testing tool.
• kippo - SSH Honeypot.
• cowrie - SSH Honeypot (based on kippo).
• sshmitm - SSH monkey-in-the-middle.
• ssh-audit - A tool for SSH server auditing.
• sshesame - A fake SSH server that lets everyone in and logs their activity.

Alternatives to SSH

• GoTTY - Share your terminal as web application.
• telnet - An unencrypted network protocol and an application used to connect to remote computers and issue commands.
• ttyd - Share your terminal over the web.
• rsh - An unencrypted network protocol and application used to connect to remote computers and issue commands.

Libraries

• C/C++
  • libssh - The SSH library.
• Golang
  • crypto/ssh - Built-in SSH client and server library.
  • sftp - SFTP support for the go.crypto/ssh package.
  • go-sshkit - Toolkit for building SSH servers and clients in Go.
  • Socker - Library for Go to simplify the use of SSH.
  • go-sshkeys - Golang SSH Keys manipulation library
• Java
  • jsch - Pure java, BSD licensed, SSH2 client library.
• Javascript/Node.js
  • ssh2 - SSH2 client and server modules written in pure JavaScript for node.js.
• Python
  • paramiko - Native Python SSHv2 protocol library.
• Ruby
  • net-ssh - Pure Ruby implementation of an SSH (protocol 2) client.

Resources

Tutorials

• How to use SSH to Connect to a Remote Server
• Best practices
• Granting Temporary Access to Your Servers (Using Signed SSH Keys)
• How to SSH login without a password
• Gist: SSH Recipes - Collection of recipes for writing awesome ssh config files.

Security

• 01/14/2016 - Integer Overflow CVE 2016 077[7-8].
• Security/Guidelines/OpenSSH - MozillaWiki - sshd\_config for 6.7+, 5.3.
• Applied-Crypto-Hardening - sshd\_config for 6.X

Documentation

• man page
• Specifications (OpenSSH)
• Wikipedia article

Community

• StackOverflow
• ServerFault

License

To the extent possible under law, Manfred Touron has waived all copyright and related or neighboring rights to this work.