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129 lines
5.0 KiB
Markdown
129 lines
5.0 KiB
Markdown
Google [Context Aware Access (CAA)](https://support.google.com/a/answer/9275380) provides contextual security requirements for endpoints accessing Google Workspace Services. GAM 6.20 and newer can create and manage access levels which can be assigned to Workspace services for your users.
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- [Grant Service Account Rights to Manage CAA](#grant-service-account-rights-to-manage-caa)
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- [Creating an Access Level](#creating-an-access-level)
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- [Updating an Access Level](#updating-an-access-level)
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- [Parameters for Basic Levels](#parameters-for-basic-levels)
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- [Showing all Access Levels](#showing-all-access-levels)
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- [Deleting an Access Level](#deleting-an-access-level)
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# Grant Service Account Rights to Manage CAA
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In order for GAM to manage CAA access levels, you need to grant your service account a special role for your GCP organization.
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1. Run a GAM command like `gam print caalevels`. This will show you the service account email and role you need to grant it. Copy the service account email.
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1. As an organization admin (Workspace Super Admin should work) go to [https://console.cloud.google.com](https://console.cloud.google.com).
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1. In the top blue bar, to the right of "Google Cloud Platform" click the selected project.
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1. Select your GCP organization which has a building icon next to it and is named after your primary domain.
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1. In the 3-bar "hamburger" menu at the top left, click IAM & Admin > IAM. The page should show `permissions for organization <primary domain>`
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1. Near the top click "Add".
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1. Enter the service account email address you recorded earlier.
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1. Select Roles > Access Context Manager > Access Context Manager Editor.
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1. Click Save. It may take 15 minutes or more for the role permissions to propagate.
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1. Confirm the role is in place by re-running `gam print caalevels`
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# Creating an Access Level
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## Syntax
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```
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gam create caalevel <name> [basic <basic condition> | custom <CEL query>]
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```
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Creates a new access level with the defined conditions. CAA supports basic and custom conditions. Custom is followed by [a CEL query](https://cloud.google.com/access-context-manager/docs/custom-access-level-spec). Basic is followed by a [basic condition](#parameters-for-basic-levels).
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## Example
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This example defines a custom access level that requires the user to use a Cloud-managed Chrome browser (CBCM) or be logged into a Cloud-managed Chrome profile.
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```
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gam create caalevel custom "device.chrome.management_state == ChromeManagementState.CHROME_MANAGEMENT_STATE_BROWSER_MANAGED | ChromeManagementState.CHROME_MANAGEMENT_STATE_PROFILE_MANAGED"
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```
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This example creates a basic access level that requires the user to come from the US or Canada regions
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```
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gam create caalevel CORP_COUNTRIES basic condition regions US,CA endcondition
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```
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This example creates a basic access level that requires the user come from one of the given IP ranges
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```
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gam create caalevel CORP_IPS basic condition ipsubnetworks 1.2.3.0/24,4.5.6.0/24 endcondition
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```
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----
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# Updating an Access Level
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## Syntax
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```
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gam update caalevel <name> [basic <basic condition> | custom <CEL query>]
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```
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Updates an existing access level. CAA supports basic and custom conditions. Custom is followed by [a CEL query](https://cloud.google.com/access-context-manager/docs/custom-access-level-spec). Basic is followed by a [basic condition](#parameters-for-basic-levels).
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## Examples
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This example adds UK to the allowed regions for CORP_COUNTRIES
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```
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gam update caalevel CORP_COUNTRIES basic condition regions US,CA,UK endcondition
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```
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----
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# Parameters for Basic Levels
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## Syntax
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```
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gam create/update accesslevel <name> basic
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combiningfunction and|or
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condition
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negate true|false
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ipsubnetworks ip4range,ip6range,...
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regions <country code>,country code>,...
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devicepolicy
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requirescreenlock true|false
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allowedencryptionstatuses ENCRYPTION_UNSUPPORTED,ENCRYPTED,UNENCRYPTED
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alloweddevicemanagementlevels NONE,BASIC,COMPLETE
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requireadminapproval true|false
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requirecorpowned true|false
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osconstraints DESKTOP_MAC:version,DESKTOP_WINDOWS:version,DESKTOP_LINUX:version,
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DESKTOP_CHROME_OS:version,VERIFIED_DESKTOP_CHROME_OS:version,
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ANDROID:version,IOS:version
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enddevicepolicy
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endcondition
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condition
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<another condition>
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endcondition
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```
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Defines a basic access level. The combiningfunction argument specifies if a user must pass all 2+ conditions (AND) or only one (OR). The negate argument specifies whether a user that matches the condition passes it or fails. The ipsubnetworks argument specifies a comma-separated list of IPv4 or IPv6 networks the user must be coming from to match. The regions argument specifies a comma-separated list of country/regions the user must be coming from to match. The device policy argument specifies characteristics of the user's device that must be present to match.
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----
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# Showing all access levels
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## Syntax
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```
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gam print caalevels
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```
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Prints out the current defined access levels.
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----
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# Deleting an Access Level
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## Syntax
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```
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gam delete caalevel <name>
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```
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Deletes the specified access level.
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---- |