Teleport's RBAC allows administrators to set up granular access policies for Windows desktops connected to Teleport.
Teleport's role
resource provides the following options for controlling
desktop access:
kind: role
version: v4
metadata:
name: developer
spec:
options:
# Specify whether or not to record the user's desktop sessions.
# Desktop session recording is enabled if one or more of the user's
# roles has enabled recording. Defaults to true if unspecified.
# Desktop sessions will never be recorded if auth_service.session_recording
# is set to 'off' in teleport.yaml or if the cluster's session_recording_config
# resource has set 'mode: off'.
record_session:
desktop: true
# Specify whether clipboard sharing should be allowed with the
# remote desktop (requires a supported browser). Defaults to true
# if unspecified. If one or more of the user's roles has disabled
# the clipboard, then it will be disabled.
desktop_clipboard: true
allow:
# Label selectors for desktops this role has access to.
windows_desktop_labels:
environment: ["dev", "stage"]
# Windows user accounts this role can connect as.
windows_desktop_logins: ["Administrator", "{{internal.windows_logins}}"]
Teleport's RBAC system is not a replacement for proper Active Directory administration. Teleport-issued Windows certificates are valid for a small amount of time, but they do apply to the entire domain. Proper care should be taken to ensure that each Teleport user's roles reflect only the necessary Windows logins, and that these Windows users are properly secured.
Labeling
Both allow
and deny
rules support windows_desktop_labels
selectors. These
selectors are matched against the labels set on the desktop. It is possible to
use wildcards ("*"
) to match all desktop labels.
Windows desktops acquire labels in two ways:
- Using the
host_labels
rules defined in thewindows_desktop_service
section of your Teleport configuration file. - Using LDAP (for desktops discovered via LDAP only)
Using host_labels
The following host_labels
configuration would apply the environment: dev
label to a Windows desktop named test.dev.example.com
and the
environment: prod
label to desktop.prod.example.com
:
host_labels:
- match: '^.*\.dev\.example\.com$'
labels:
environment: dev
- match: '^.*\.prod\.example\.com$'
labels:
environment: prod
Using LDAP
Teleport Desktop Access can automatically discover Windows Desktops and register them with the Teleport Cluster by periodically querying an LDAP server. There are several ways that these desktops can be labeled:
Teleport applies the following labels automatically to all desktops discovered via LDAP:
Label | LDAP Attribute | Example |
---|---|---|
teleport.dev/computer_name | name | WIN-I5G06B8RT33 |
teleport.dev/dns_host_name | dNSHostName | WIN-I5G06B8RT33.example.com |
teleport.dev/os | operatingSystem | Windows Server 2012 |
teleport.dev/os_version | osVersion | 4.0 |
teleport.dev/windows_domain | Sourced from config | example.com |
teleport.dev/is_domain_controller | primaryGroupID | true |
teleport.dev/ou | Derived from distinguishedName | OU=IT,DC=goteleport,DC=com |
Additionally, users can configure LDAP attributes which will be converted into Teleport labels. For example, consider the following Desktop Access configuration:
discovery:
label_attributes:
- location
For a desktop with a location
attribute of Oakland
, Teleport would apply a
label with key ldap/location
and value Oakland
.
Logins
The windows_desktop_logins
role setting lists the Windows user accounts that
the role permits access to. For local users, the {{internal.windows_logins}}
variable can be used as a placeholder for the user's windows_logins
trait. The
windows_logins
trait can be specified when the user is created with
tctl users add alice --windows-logins=Administrator,DBUser
.
New clusters automatically populate the preset access
role with the following:
allow:
windows_desktop_logins: ["{{internal.windows_logins}}"]
Clipboard Access
In order for a user to copy and paste between a remote desktop and their local
workstation, clipboard sharing must be enabled for the user. The
desktop_clipboard
role option defaults to enabled if unspecified. To disable
clipboard sharing for a Teleport user, ensure that they are assigned at least
one role that explicitly disables clipboard sharing:
desktop_clipboard: false
Directory Sharing
A Teleport user can share a directory on their local workstation with a remote desktop using Directory Sharing.
A Teleport role enables Directory Sharing by default. If one of a user's Teleport roles disables Directory Sharing, then Directory Sharing will be disabled for that user.
To disable Directory Sharing for a Teleport user, define a role similar to the
following in a file called role.yaml
:
kind: role
version: v5
metadata:
name: "no-sharing"
spec:
options:
desktop_directory_sharing: false
Session Recording
In order for a Teleport user's desktop sessions to be recorded, the following must both be true:
- Session recording is enabled (i.e. not set to
off
) on the cluster. This setting resides inteleport.yaml
underauth_service.session_recording
, but can also be configured dynamically via the cluster'ssession_recording_config
resource. - The user's roles enable desktop session recording.
By default, desktop session recording is considered enabled in Teleport roles unless it is explicitly disabled:
record_session:
desktop: false
In order to disable desktop session recording for a user, all of the user's roles must disable it. In other words, the presence of a single role which enables recording is enough to ensure sessions are recorded.