teleport

README

Gravitational Teleport

Project Links	Description
Teleport Website	The official website of the project
Documentation	Admin guide, user manual and more
Demo Video	3-minute video overview of the UI.
Teleconsole	The free service to "invite" SSH clients behind NAT, built on top of Teleport
Blog	Our blog where we publish Teleport news

Introduction

Gravitational Teleport is a modern SSH server for remotely accessing clusters of Linux servers via SSH or HTTPS. It is intended to be used instead of sshd. Teleport enables teams to easily adopt the best SSH practices like:

• No need to distribute keys: Teleport uses certificate-based access with automatic expiration time.
• Enforcement of 2nd factor authentication.
• Cluster introspection: every Teleport node becomes a part of a cluster and is visible on the Web UI.
• Record and replay SSH sessions for knowledge sharing and auditing purposes.
• Collaboratively troubleshoot issues through session sharing.
• Connect to clusters located behind firewalls without direct Internet access via SSH bastions.
• Ability to integrate SSH credentials with your organization identities via OAuth (Google Apps, Github).

Teleport is built on top of the high-quality Golang SSH implementation and it is fully compatible with OpenSSH.

Installing and Running

Download the latest binary release, unpack the .tar.gz and run sudo make install. This will copy Teleport binaries into /usr/local/bin.

Then you can run Teleport as a single-node cluster:

teleport start 

Building Teleport

Teleport source code consists of the actual Teleport daemon binary written in Golang, and also it has a web UI (located in /web directory) written in Javascript. The WebUI is not changed often and we keep it checked into Git under /dist, so you only need to build Golang:

Make sure you have Golang v1.7 or newer, then run:

1. go get github.com/gravitational/teleport
2. cd $GOPATH/src/github.com/gravitational/teleport
3. CGO_ENABLED=true make

If the build was successful the binaries are here: $GOPATH/src/github.com/gravitational/teleport/build

You'll have to create /var/lib/teleport directory and then you can start Teleport as a single-node cluster in development mode: build/teleport start -d

If you want to release your own Teleport version, edit this Makefile, update VERSION and SUFFIX constants, then run make setver to update version.go

If you want to cut another binary release tarball, run make release.

NOTE: The Go compiler is somewhat sensitive to amount of memory: you will need at least 1GB of virtual memory to compile Teleport. 512MB instance without swap will not work.

Rebuilding Web UI

If you want to make changes to the web UI, you have to re-build the content of /dist directory See web/README.md for instructions on how to update the Web UI.

Why did We Build Teleport?

Mature tech companies with significant infrastructure footprints tend to implement most of these patterns internally. Teleport allows smaller companies without significant in-house SSH expertise to easily adopt them, as well. Teleport comes with an accessible Web UI and a very permissive Apache 2.0 license to facilitate adoption and use.

Being a complete standalone tool, Teleport can be used as a software library enabling trust management in complex multi-cluster, multi-region scenarios across many teams within multiple organizations.

More Information

• Quick Start Guide
• Teleport Architecture
• Admin Manual
• User Manual
• FAQ

Contributing

The best way to contribute is to create issues or pull requests right here on Github. You can also reach the Gravitational team through their website

It is possible to make changes to the Web UI without having to rebuild and restart teleport. Simply launch it with DEBUG environment variable set from $GOPATH:

$ DEBUG=1 $GOPATH/gravitational/teleport/build/teleport start

Status

Teleport has completed a security audit from a nationally recognized technology security company. So we are comfortable with the use of Teleport from a security perspective.

However, Teleport is still a relatively young product so you may experience usability issues. We are actively supporting Teleport and addressing any issues that are submitted to this repo. Ask questions, send pull requests, report issues and don't be shy! :)

The latest stable Teleport build can be found in Releases

Known Issues

• Teleport does not officially support IPv6 yet.

Who Built Teleport?

Teleport was created by Gravitational Inc. We have built Teleport by borrowing from our previous experiences at Rackspace. It has been extracted from Gravity, our system for helping our clients to deploy and remotely manage their SaaS applications on many cloud regions or even on-premise.

Documentation

Overview

DO NOT EDIT THIS FILE. IT IS GENERATED BY 'make setver'

Index

• Constants
• Variables
• type Role
  • func (r *Role) Check() error
  • func (r *Role) Set(v string) error
  • func (r *Role) String() string
• type Roles
  • func ParseRoles(str string) (roles Roles, err error)
  • func (roles Roles) Check() (err error)
  • func (roles Roles) Equals(other Roles) bool
  • func (roles Roles) Include(role Role) bool
  • func (roles Roles) String() string

Constants

const (
	// BoltBackendType is a BoltDB backend
	BoltBackendType = "bolt"

	// ETCDBackendType is etcd backend
	ETCDBackendType = "etcd"

	// Component indicates a component of teleport, used for logging
	Component = "component"

	// ComponentFields stores component-specific fields
	ComponentFields = "fields"

	// ComponentReverseTunnel is reverse tunnel agent and server
	// that together establish a bi-directional SSH revers tunnel
	// to bypass firewall restrictions
	ComponentReverseTunnel = "reversetunnel"

	// ComponentAuth is the cluster CA node (auth server API)
	ComponentAuth = "auth"

	// ComponentNode is SSH node (SSH server serving requests)
	ComponentNode = "node"

	// ComponentProxy is SSH proxy (SSH server forwarding connections)
	ComponentProxy = "proxy"

	// ComponentTunClient is a tunnel client
	ComponentTunClient = "tunclient"

	// DebugEnvVar tells tests to use verbose debug output
	DebugEnvVar = "DEBUG"

	// DefaultTimeout sets read and wrie timeouts for SSH server ops
	DefaultTimeout time.Duration = 30 * time.Second

	// DebugOutputEnvVar tells tests to use verbose debug output
	DebugOutputEnvVar = "TELEPORT_DEBUG"

	// DefaultTerminalWidth defines the default width of a server-side allocated
	// pseudo TTY
	DefaultTerminalWidth = 80

	// DefaultTerminalHeight defines the default height of a server-side allocated
	// pseudo TTY
	DefaultTerminalHeight = 25

	// SafeTerminalType is the fall-back TTY type to fall back to (when $TERM
	// is not defined)
	SafeTerminalType = "xterm"
)

const ForeverTTL time.Duration = 0

ForeverTTL means that object TTL will not expire unless deleted

const (
	Version = "1.3.2"
)

Variables

var Gitref string

Types

type Role

type Role string

Role identifies the role of SSH server connection

const (
	// RoleAuth is for teleport auth server (authority, authentication and authorization)
	RoleAuth Role = "Auth"
	// RoleUser is a role for teleport SSH user
	RoleUser Role = "User"
	// RoleWeb is for web access users
	RoleWeb Role = "Web"
	// RoleNode is a role for SSH node in the cluster
	RoleNode Role = "Node"
	// RoleProxy is a role for SSH proxy in the cluster
	RoleProxy Role = "Proxy"
	// RoleAdmin is admin role
	RoleAdmin Role = "Admin"
	// RoleProvisionToken is a role for nodes authenticated using provisioning tokens
	RoleProvisionToken Role = "ProvisionToken"
	// RoleSignup is for first time signing up users
	RoleSignup Role = "Signup"
	// RoleU2FSign is for partially authenticated U2F users who need to request a U2F auth challenge
	RoleU2FSign = "U2FSign"
	// RoleU2FUser is for teleport SSH user already authenticated with U2F
	RoleU2FUser = "U2FUser"
)

func (*Role) Check

func (r *Role) Check() error

Check checks if this a a valid role value, returns nil if it's ok, false otherwise

func (*Role) Set

func (r *Role) Set(v string) error

Set sets the value of the role from string, used to integrate with CLI tools

func (*Role) String

func (r *Role) String() string

String returns debug-friendly representation of this role

type Roles

type Roles []Role

func ParseRoles

func ParseRoles(str string) (roles Roles, err error)

ParseRoles takes a comma-separated list of roles and returns a slice of roles, or an error if parsing failed

func (Roles) Check

func (roles Roles) Check() (err error)

Check returns an erorr if the role set is incorrect (contains unknown roles)

func (Roles) Equals

func (roles Roles) Equals(other Roles) bool

Equals compares two sets of roles

func (Roles) Include

func (roles Roles) Include(role Role) bool

Includes returns 'true' if a given list of roles includes a given role

func (Roles) String

func (roles Roles) String() string