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    Secure access to SaaS applications

    This page guides you through the process of securing your SaaS applications through the Chrome Enterprise Premium secure gateway.

    A Chrome Enterprise Premium secure gateway functions as a forward proxy, enforcing a zero trust access framework and delivering granular, context-aware control over who accesses your SaaS applications.

    How securing access to SaaS applications works

    The following is a high level overview of how a secure gateway protects your SaaS applications:

    1. The client-side browser settings route application traffic through a secure gateway proxy.
    2. The secure gateway checks Context-Aware Access policies to authorize client (user and device) access.
    3. If client access is allowed, the gateway forwards traffic to the application using unique source IP addresses assigned to that gateway and Google Cloud region. These assigned IP addresses are reserved exclusively for the gateway that you create and cannot be used by other users or gateways. To control access, you can add these dedicated source IP addresses to an allowlist in your SaaS application.

    Before you begin

    Before setting up the secure gateway, verify that you have the following:

    Limitations

    A Chrome Enterprise Premium secure gateway has the following limitations:

    • IPv6 connectivity: Chrome Enterprise Premium secure gateway doesn't support SaaS applications that use IPv6 connectivity.
    • Identity provider as a SaaS application: An Identity provider must not be configured as a SaaS application to be protected by the secure gateway, if the end-user's authentication with secure gateway is dependent on the same IdP.

    Set up your shell environment

    To streamline the setup process and interact with the secure gateway APIs, define the following environment variables in your working shell.

    • General parameters

       PROJECT_ID 
 = 
  PROJECT_ID 
 
 APPLICATION_ID 
 = 
  APPLICATION_ID 
 
 APPLICATION_DISPLAY_NAME 
 = 
 "  APPLICATION_DISPLAY_NAME 
 
" 
 HOST_NAME 
 = 
  HOST_NAME

      Replace the following:

      • PROJECT_ID : The ID of the project where the secure gateway is created.
      • APPLICATION_ID : The ID of your application, such as github . The name can be up to 63 characters, and can contain lowercase letters, numbers, and hyphens. The first character must be a letter, and the last character can be a letter or number.
      • APPLICATION_DISPLAY_NAME : The human-readable name to display.

      • HOST_NAME : The hostname of your application. For example, github.com . The hostname can be up to 253 characters long, and must adhere to one of the following formats:

        • A valid IPv4 address
        • A valid IPv6 address
        • A valid DNS name
        • An asterisk (*)
        • An asterisk (*) followed by a valid DNS name

    • Secure gateway parameters

       SECURITY_GATEWAY_ID 
 = 
  SECURITY_GATEWAY_ID 
 
 SECURITY_GATEWAY_DISPLAY_NAME 
 = 
 "  SECURITY_GATEWAY_DISPLAY_NAME 
 
"

      Replace the following:

      • SECURITY_GATEWAY_ID : The ID of the secure gateway. The ID can be up to 63 characters, and can contain lowercase letters, numbers, and hyphens. The first character should be a letter, and the last character can be a letter or number.
      • SECURITY_GATEWAY_DISPLAY_NAME : The human-readable name of the secure gateway. The name can be up to 63 characters long and can only contain printable characters.

    Create a secure gateway

    A Chrome Enterprise Premium secure gateway is a fundamental building block for establishing secure connections to your applications. It allocates a dedicated project and network, providing isolation and security.

    console

    To create a secure gateway resource, do the following:

    1. In the Google Cloud console, go to the secure gatewaypage.
      Go to secure gateway
    2. Select the project you want to create the secure gateway for.
    3. To create a secure gateway, click Create new gatewayand wait for the gateway creation process to complete.
    4. You can track the progress in the Notifications section of the Google Cloud console.
    5. Before you create a SaaS application resource, we recommend that you create SaaS egress hubs. The hubs flag represents the regional resources required for enabling egress connectivity to the target application. You can configure one hub for each region, and each hub provides two IP addresses. You can specify the following regions:
      • africa-south1
      • asia-east1
      • asia-south1
      • asia-south2
      • asia-southeast1
      • europe-central2
      • europe-north1
      • europe-southwest1
      • europe-west1
      • europe-west2
      • europe-west3
      • europe-west4
      • europe-west8
      • europe-west9
      • northamerica-northeast1
      • northamerica-northeast2
      • northamerica-south1
      • southamerica-east1
      • southamerica-west1
      • us-central1
      • us-east1
      • us-east4
      • us-east5
      • us-west1
    6. In the Google Cloud console, go to the SaaS Egress Hubspage.
      Go to SaaS Egress Hubs
    7. Select the project you want to create the SaaS Egress Hubs for.
    8. To add a SaaS egress hub, click Add SaaS egress hub.
    9. From the drop-down list, select the regions where you'd like to add the egress hubs. To add the egress hubs, click Add SaaS egress hubto add more than one hub. After you're done, click Save to create the egress hubs.

    gcloud

    To create a secure gateway resource, run the following command. For the --hubs flag, specify one or more regions from the following list.

    gcloud  
beyondcorp  
security-gateways  
create  
 SECURITY_GATEWAY_ID 
  
 \ 
  
--project = 
 PROJECT_ID 
  
 \ 
  
--location = 
global  
 \ 
  
--display-name = 
 " SECURITY_GATEWAY_DISPLAY_NAME 
" 
  
 \ 
  
--hubs = 
us-central1

    The hubs flag sets the regional resources required for enabling egress connectivity to the target application. You can have one hub for each region, and each hub provides two IP addresses. You can specify the following regions:

    • africa-south1
    • asia-east1
    • asia-south1
    • asia-south2
    • asia-southeast1
    • europe-central2
    • europe-north1
    • europe-southwest1
    • europe-west1
    • europe-west2
    • europe-west3
    • europe-west4
    • europe-west8
    • europe-west9
    • northamerica-northeast1
    • northamerica-northeast2
    • northamerica-south1
    • southamerica-east1
    • southamerica-west1
    • us-central1
    • us-east1
    • us-east4
    • us-east5
    • us-west1

    REST

    To create a secure gateway resource, call the Create API method with the gateway details in the request body. For the hubs flag, specify one or more regions from the following list.

    curl  
 \ 
  
-H  
 "Authorization: Bearer 
 $( 
gcloud  
auth  
print-access-token ) 
 " 
  
 \ 
  
-H  
 "Content-Type: application/json" 
  
 \ 
  
-X  
POST  
 \ 
  
-d  
 '{ "display_name": " SECURITY_GATEWAY_DISPLAY_NAME 
", "hubs": { "us-central1": {} } }' 
  
 \ 
  
 "https://beyondcorp.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/securityGateways?security_gateway_id= SECURITY_GATEWAY_ID 
"

    The hubs flag represents the regional resources required for enabling egress connectivity to the target application. You can have one hub for each region, and each hub provides two IP addresses. You can specify the following regions:

    • africa-south1
    • asia-east1
    • asia-south1
    • asia-south2
    • asia-southeast1
    • europe-central2
    • europe-north1
    • europe-southwest1
    • europe-west1
    • europe-west2
    • europe-west3
    • europe-west4
    • europe-west8
    • europe-west9
    • northamerica-northeast1
    • northamerica-northeast2
    • northamerica-south1
    • southamerica-east1
    • southamerica-west1
    • us-central1
    • us-east1
    • us-east4
    • us-east5
    • us-west1

    Configure a SaaS application

    After you create a secure gateway, you can configure your SaaS applications to use the secure gateway for secure access.

    console

    To configure SaaS egress hubs, do the following:

    1. In the Google Cloud console, go to the SaaS Egress Hubspage.
      Go to SaaS Egress Hubs
    2. On the SaaS Egress Hubspage, find the table listing the hubs. For each region you intend to use, copy all the IP addresses listed in the Static dedicated egress IPscolumn. Each region provides two IP addresses.
    3. Add the IP addresses to the IP allowlist of your SaaS application. For example, for a GitHub application, you can follow this guide: Managing allowed IP addresses for your organization .

    gcloud

    To configure SaaS egress hubs, do the following:

    1. Get the IP addresses allocated by the secure gateway for each hub. Two IP addresses are allocated for a region.
      2. gcloud  
beyondcorp  
security-gateways  
describe  
 SECURITY_GATEWAY_ID 
  
 \ 
  
--project = 
 PROJECT_ID 
  
 \ 
  
--location = 
global

      The following is a sample GET response of a secure gateway with hubs . In the example, hubs are created in the us-central1 and us-east1 regions, and all of the IP addresses returned in the response must be allowed in the SaaS application.

       createTime 
 : 
  
 'CREATE_TIME' 
 displayName 
 : 
  
 My secure gateway 
 hubs 
 : 
  
 us-central1 
 : 
  
 internetGateway 
 : 
  
 assignedIps 
 : 
  
 - 
  
 IP_ADDRESS_1 
  
 - 
  
 IP_ADDRESS_2 
  
 us-east1 
 : 
  
 internetGateway 
 : 
  
 assignedIps 
 : 
  
 - 
  
 IP_ADDRESS_1 
  
 - 
  
 IP_ADDRESS_2 
 name 
 : 
  
 projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
 
 state 
 : 
  
 RUNNING 
 updateTime 
 : 
  
 'UPDATE_TIME'
    2. Add the IP addresses to the IP allowlist of your SaaS application. For example, for a GitHub application, you can follow this guide: Managing allowed IP addresses for your organization .

    REST

    To configure SaaS egress hubs, do the following:

    1. Get the IP addresses allocated by the secure gateway for each hub. Two IP addresses are allocated for a region.
      2. curl  
 \ 
  
-H  
 "Authorization: Bearer 
 $( 
gcloud  
auth  
print-access-token ) 
 " 
  
 \ 
  
-H  
 "Content-Type: application/json" 
  
 \ 
  
 "https://beyondcorp.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
"

      The following is a sample GET response of a secure gateway with hubs . In the example, hubs are created in the us-central1 and us-east1 regions, and all of the IP addresses returned in the response must be allowed in the SaaS application.

       { 
  
 "securityGateways" 
 : 
  
 [ 
  
 { 
  
 "name" 
 : 
  
 "projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
" 
 , 
  
 "createTime" 
 : 
  
 "CREATE_TIME" 
 , 
  
 "updateTime" 
 : 
  
 "UPDATE_TIME" 
 , 
  
 "displayName" 
 : 
  
 "My secure gateway" 
 , 
  
 "state" 
 : 
  
 "RUNNING" 
 , 
  
 "hubs" 
 : 
  
 { 
  
 "us-central1" 
 : 
  
 { 
  
 "internetGateway" 
 : 
  
 { 
  
 "assignedIps" 
 : 
  
 [ 
  
 "IP_ADDRESS_1" 
 , 
  
 "IP_ADDRESS_2" 
 , 
  
 ] 
  
 } 
  
 }, 
  
 "us-east1" 
 : 
  
 { 
  
 "internetGateway" 
 : 
  
 { 
  
 "assignedIps" 
 : 
  
 [ 
  
 "IP_ADDRESS_1" 
 , 
  
 "IP_ADDRESS_2" 
 , 
  
 ] 
  
 } 
  
 } 
  
 } 
  
 } 
  
 ] 
 }
    2. Add the IP addresses to the IP allowlist of your SaaS application. For example, for a GitHub application, you can follow this guide: Managing allowed IP addresses for your organization .

    Create an application resource

    The following information guides you through the process of setting up and configuring a secure gateway application resource.

    Create a secure gateway application resource in Google Cloud

    The Google Cloud application resource is a sub-resource of the secure gateway resource. Create an application resource by using the Google Cloud console or calling the Create API.

    console

    To create a SaaS application, do the following:

    1. In the Google Cloud console, go to the secure gatewaypage.
      Go to secure gateway
    2. To create an application, click Add application.
    3. Select the application type: Public application.
    4. If SaaS egress hubs aren't yet configured for this secure gateway, you will be prompted to create them. Public applications require at least one SaaS egress hub. To configure SaaS egress hubs, click Go to SaaS egress hubsand add one or more regions.
    5. After you have one or more egress hubs, click Next.
    6. Enter the application details:
      • Application name: Enter a name, for example, GitHub .
      • Domain matchers: Enter a comma-separated list of domain patterns to route through the secure gateway. Include the port in the format domain:port . Wildcards ( * ) are allowed. For example: github.com:443 .
    7. To configure your SaaS application, click Continue.
    8. Configure your SaaS application to allow traffic from the secure gateway:
      1. Carefully note or copy all the IP addresses listed for the regions you are using. These IP addresses are unique to your secure gateway.
      2. Sign in to your SaaS application's administration console.
      3. Navigate to the network settings or security settings where IP allowlists are managed.
      4. Add all the IP addresses obtained to the application's IP allowlist.
    9. To add the application, click Continue.
    10. To create, save your settings and create the application, click Create.

    gcloud

    To create a SaaS application using gcloud, run the following command:

    gcloud  
beyondcorp  
security-gateways  
applications  
create  
 APPLICATION_ID 
  
 \ 
  
--project = 
 PROJECT_ID 
  
 \ 
  
--security-gateway = 
 SECURITY_GATEWAY_ID 
  
 \ 
  
--location = 
global  
 \ 
  
--display-name = 
 " APPLICATION_DISPLAY_NAME 
" 
  
 \ 
  
--endpoint-matchers = 
 "hostname= HOST_NAME 
,ports= 443 
"

    REST

    To create a SaaS application using the REST API, run the following command:

    curl  
 \ 
  
-H  
 "Authorization: Bearer 
 $( 
gcloud  
auth  
print-access-token ) 
 " 
  
 \ 
  
-H  
 "Content-Type: application/json" 
  
 \ 
  
-X  
POST  
 \ 
  
-d  
 "{ \"display_name\": \" APPLICATION_DISPLAY_NAME 
\", \"endpoint_matchers\": [{hostname: \" HOST_NAME 
\", ports: 443}] }" 
  
 \ 
  
 "https://beyondcorp.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
/applications?application_id= APPLICATION_ID 
"

    Configure Google Chrome proxy mode

    You can route application traffic through the secure gateway by applying a PAC file in the Chrome settings in the Google Admin console. To apply the PAC file, do the following:

    1. To create or update a PAC file, do the following:
      • Create your first application by creating a pac_config.js file using the following example PAC file.
      • Update your existing pac_config.js file and add the domains of your new application to the sites array, as shown in the following example PAC file.
       function 
  
 FindProxyForURL 
 ( 
 url 
 , 
  
 host 
 ) 
  
 { 
  
 const 
  
 PROXY 
  
 = 
  
 "HTTPS via.prod.securegateway.goog: 443 
" 
 ; 
  
 const 
  
 sites 
  
 = 
  
 [ 
 " HOST_NAME 
" 
 ]; 
  
 for 
  
 ( 
 const 
  
 site 
  
 of 
  
 sites 
 ) 
  
 { 
  
 if 
  
 ( 
 shExpMatch 
 ( 
 url 
 , 
  
 'https://' 
  
 + 
  
 site 
  
 + 
  
 '/*' 
 ) 
  
 || 
  
 shExpMatch 
 ( 
 url 
 , 
  
 '*.' 
  
 + 
  
 site 
  
 + 
  
 '/*' 
 )) 
  
 { 
  
 return 
  
 PROXY 
 ; 
  
 } 
  
 } 
  
 return 
  
 'DIRECT' 
 ; 
 }

      Replace HOST_NAME with the hostname of your application—for example, myapp.example.com .

      If you're using an existing PAC file that's not specific to a secure gateway, merge the PAC files by adding the domains of your application to the sites array.

    2. Upload the file so that it's publicly downloadable. For example, you can upload the file to Cloud Storage , and make the file publicly downloadable by granting all of the users the Storage Object User role on the bucket.

    3. To verify that the uploaded file is the latest version, you can adjust its caching behavior by setting the Cache-Control header to no-cache . Setting the header prevents browsers and intermediate servers from storing a copy of the file, so that Chrome downloads the most recent version.

      For more information about Cache-Control and how it affects browser caching, see Cache-Control header .

    4. Copy the public URL of the uploaded file.

    Update proxy mode settings

    To update proxy mode settings, do the following:

    1. Go to the Google Admin console .
    2. Click Devices > Chrome > Settings.
    3. Select the organizational unit or group, and then click Proxy mode.
    4. In Proxy mode, select Always use the proxy auto-config specified below, and enter the URL of the PAC file from Cloud Storage.
    5. To save the proxy mode settings, click Save.

    Configure an access policy

    You can apply an access policy to control access at either the secure gateway level, which affects all associated applications, or at the individual application level for more granular control.

    console

    Create a gateway-level policy

    To configure an access policy, do the following:

    1. To create a policy that applies to multiple applications linked to the secure gateway, go to the Policiespage.
      Go to Policies
    2. To add access policies to applications, click Create Policy.
    3. From the drop-down list, select the applications that you'd like the policies to apply to.
    4. Add principals to the policy:

      Principals can be users, groups, domains, or service accounts. These principals are granted or denied access based on the access levels you assign.

      1. To add a principal, click Add principal.
      2. In the Principalfield, enter the email address of the user, group, service account, or the domain name.
      3. In the Access Levelsdrop-down, select one or more predefined Context-Aware Access levels. Access is granted only if the principal meets the conditions of the selected access levels.

      To add more principals, click Add principalagain and repeat the substeps.

      You can create and manage access levels in Access Context Manager .

    5. To apply the policy to the application, click Create Policy.

    Modify an application-level access policy

    1. To modify a policy for a single application, go to the Applicationspage.
      Go to Applications
    2. To find the application that you want to edit, do the following:
      1. In the Applicationslist, search for the application that you want to modify.
      2. To view the application details, click the More actionsmenu ( ) and select View Details.
    3. To edit the application, click Edit.
    4. Add principals to the policy:

      Principals can be users, groups, domains, or service accounts. These principals are granted or denied access based on the access levels you assign.

      1. To add a principal, click Add principal.
      2. In the Principalfield, enter the email address of the user, group, service account, or the domain name.
      3. In the Access Levelsdrop-down list, select one or more predefined Context-Aware Access levels. Access is granted only if the principal meets the conditions of the selected access levels.

      To add more principals, click Add principalagain and repeat the substeps.

      You can create and manage access levels in Access Context Manager .

    5. To apply the policy to the application, click Save.

    gcloud

    Safely update an access policy

    The setIamPolicy command replaces the entire existing policy with the one that you provide. To avoid accidentally removing existing permissions, we recommend that you use the following "read-modify-write" pattern. This pattern helps prevent accidental removal of existing permissions.

    1. Read: First, get the current access policy.
    2. Modify: Edit the policy file locally to add or change permissions.
    3. Write: Apply your updated policy file.

    Get the current policy

    Retrieve the current policy before making any changes. The etag field in the policy acts as a version identifier. It prevents conflicting updates if multiple administrators make changes simultaneously.

    The following command retrieves the policy and saves it to a file named policy.json .

    gcloud  
beta  
beyondcorp  
security-gateways  
applications  
get-iam-policy  
 APPLICATION_ID 
  
 \ 
  
--security-gateway = 
 SECURITY_GATEWAY_ID 
  
 \ 
  
--project = 
 PROJECT_ID 
  
 \ 
  
--location = 
global > 
policy.json

    Replace the following:

    • APPLICATION_ID : the ID of the application resource
    • SECURITY_GATEWAY_ID : the ID of the secure gateway
    • PROJECT_ID : the ID of the project where the secure gateway is configured

    The command creates a policy.json file that contains the current policy.

    Modify the policy file

    Open the policy.json file in a text editor. To grant a group access to use the secure gateway, add the group to the members list for the roles/beyondcorp.securityGatewayUser role.

    The policy.json file is similar to the following example:

     { 
  
 "version" 
 : 
  
 3 
 , 
  
 "bindings" 
 : 
  
 [ 
  
 { 
  
 "role" 
 : 
  
 "roles/beyondcorp.securityGatewayUser" 
 , 
  
 "members" 
 : 
  
 [ 
  
 "group:existing-group@example.com" 
  
 ] 
  
 } 
  
 ], 
  
 "etag" 
 : 
  
 "BwXN8_d-bOM=" 
 }

    To add an additional group, add a new entry to the members array. Include a comma after the preceding entry. The following example adds new-group@example.com :

     { 
  
 "version" 
 : 
  
 3 
 , 
  
 "bindings" 
 : 
  
 [ 
  
 { 
  
 "role" 
 : 
  
 "roles/beyondcorp.securityGatewayUser" 
 , 
  
 "members" 
 : 
  
 [ 
  
 "group:existing-group@example.com" 
 , 
  
 "group:new-group@example.com" 
  
 ] 
  
 } 
  
 ], 
  
 "etag" 
 : 
  
 "BwXN8_d-bOM=" 
 }

    You can also add other types of members, such as serviceAccount , user , group , principal , and principalSet , in policy bindings. See IAM principals for more information.

    Apply the updated policy

    After editing and saving your policy.json file, apply it to the resource using the setIamPolicy command. This command uses the etag from your file to ensure that you update the correct version.

    gcloud  
beta  
beyondcorp  
security-gateways  
applications  
set-iam-policy  
 APPLICATION_ID 
  
policy.json  
 \ 
  
--security-gateway = 
 SECURITY_GATEWAY_ID 
  
 \ 
  
--project = 
 PROJECT_ID 
  
 \ 
  
--location = 
global

    Replace the following:

    • APPLICATION_ID : the ID of the application resource
    • SECURITY_GATEWAY_ID : the ID of the secure gateway
    • PROJECT_ID : the ID of the project where the secure gateway is configured

    Add a conditional access policy

    You can also set access policies with conditions. Conditions specify requirements, such as a user's IP address originating from a specific location.

    The following example policy grants access only if the source IP address is within a specified access level:

       
 { 
  
 "version" 
 : 
  
 3 
 , 
  
 "bindings" 
 : 
  
 [ 
  
 { 
  
 "role" 
 : 
  
 "roles/beyondcorp.securityGatewayUser" 
 , 
  
 "members" 
 : 
  
 [ 
  
 "group:group@example.com" 
  
 ], 
  
 "condition" 
 : 
  
 { 
  
 "expression" 
 : 
  
 "request.auth.access_levels.contains('accessPolicies/1234567890/accessLevels/in_us')" 
 , 
  
 "title" 
 : 
  
 "Source IP must be in US" 
  
 } 
  
 } 
  
 ], 
  
 "etag" 
 : 
  
 "BwXN8_d-bOM=" 
  
 }

    To apply this policy, follow the steps described earlier.

    REST

    Safely update an access policy

    The setIamPolicy command replaces the entire existing policy with the one that you provide. To avoid accidentally removing existing permissions, we recommend that you use the following "read-modify-write" pattern. This pattern helps prevent accidental removal of existing permissions.

    1. Read: Save the current access policy to a file.
    2. Modify: Edit the policy file locally to add or change permissions.
    3. Write: Apply your updated policy file.

    Get the current policy

    Retrieve the current policy before making any changes. The etag field in the policy acts as a version identifier. It prevents conflicting updates if multiple administrators make changes simultaneously.

    The following command retrieves the policy and saves it to a file named policy.json .

    curl  
 \ 
  
-H  
 "Authorization: Bearer 
 $( 
gcloud  
auth  
print-access-token ) 
 " 
  
 \ 
  
-H  
 "Content-Type: application/json" 
  
 \ 
  
 "https://beyondcorp.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
/applications/ APPLICATION_ID 
:getIamPolicy" 
  
>  
policy.json

    Replace the following:

    • PROJECT_ID : the ID of the project where the secure gateway is configured
    • SECURITY_GATEWAY_ID : the ID of the secure gateway
    • APPLICATION_ID : the ID of the application resource

    The command creates a policy.json file that contains the current policy.

    Modify the policy file

    To grant a group access to use the secure gateway, do the following:

    1. Open the policy.json file in a text editor.
    2. Add the group to the members list for the roles/beyondcorp.securityGatewayUser role.

    The policy.json file is similar to the following example:

     { 
  
 "version" 
 : 
  
 3 
 , 
  
 "bindings" 
 : 
  
 [ 
  
 { 
  
 "role" 
 : 
  
 "roles/beyondcorp.securityGatewayUser" 
 , 
  
 "members" 
 : 
  
 [ 
  
 "group:existing-group@example.com" 
  
 ] 
  
 } 
  
 ], 
  
 "etag" 
 : 
  
 "BwXN8_d-bOM=" 
 }

    To add an additional group, add a new entry to the members array. Include a comma after the preceding entry. The following example adds new-group@example.com :

     { 
  
 "version" 
 : 
  
 3 
 , 
  
 "bindings" 
 : 
  
 [ 
  
 { 
  
 "role" 
 : 
  
 "roles/beyondcorp.securityGatewayUser" 
 , 
  
 "members" 
 : 
  
 [ 
  
 "group:existing-group@example.com" 
 , 
  
 "group:new-group@example.com" 
  
 ] 
  
 } 
  
 ], 
  
 "etag" 
 : 
  
 "BwXN8_d-bOM=" 
 }

    You can also add other types of members, such as serviceAccount , user , group , principal , and principalSet , in policy bindings. See IAM principals for more information.

    Apply the updated policy

    After editing and saving your policy.json file, apply it to the resource using the setIamPolicy command. This command uses the etag from your file to ensure that you update the correct version.

    jq  
 '{policy: .}' 
  
policy.json  
 | 
  
curl  
-X  
POST  
 \ 
  
-H  
 "Authorization: Bearer 
 $( 
gcloud  
auth  
print-access-token ) 
 " 
  
 \ 
  
-H  
 "Content-Type: application/json" 
  
 \ 
  
-d  
@-  
 \ 
  
 "https://beyondcorp.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
/applications/ APPLICATION_ID 
:setIamPolicy"

    Replace the following:

    • PROJECT_ID : the ID of the project where the secure gateway is configured
    • SECURITY_GATEWAY_ID : the ID of the secure gateway
    • APPLICATION_ID : the ID of the application resource

    Add a conditional access policy

    You can also set access policies with conditions. Conditions specify requirements, such as a user's IP address originating from a specific location.

    The following example policy grants access only if the source IP address is within a specified access level:

     { 
  
 "version" 
 : 
  
 3 
 , 
  
 "bindings" 
 : 
  
 [ 
  
 { 
  
 "role" 
 : 
  
 "roles/beyondcorp.securityGatewayUser" 
 , 
  
 "members" 
 : 
  
 [ 
  
 "group:group@example.com" 
  
 ], 
  
 "condition" 
 : 
  
 { 
  
 "expression" 
 : 
  
 "request.auth.access_levels.contains('accessPolicies/1234567890/accessLevels/in_us')" 
 , 
  
 "title" 
 : 
  
 "Source IP must be in US" 
  
 } 
  
 } 
  
 ], 
  
 "etag" 
 : 
  
 "BwXN8_d-bOM=" 
 }

    To apply this policy, follow the steps described earlier.

    Enhance Security with Context-Aware Access

    To further enhance security and ensure that only managed Google Chrome instances can access your web applications through the Security Gateway, we recommend adding a Context-Aware Access (CAA) rule. This rule verifies that the user's Chrome profile is under management, preventing potential misuse from unmanaged or malicious browsers.

    You can implement this by adding a condition to your access levels in Chrome Enterprise Premium Access Context Manager. Here is an example condition you can adapt:

    device.chrome.management_state == ChromeManagementState.CHROME_MANAGEMENT_STATE_PROFILE_MANAGED

    Install the Chrome Enterprise Premium extension

    The Chrome Enterprise Premium extension is an integral part of a secure gateway, and it helps with authentication. Install the extension for all of the users of the secure gateway. For information about deploying the extension, see View and configure apps and extensions . To install the Chrome Enterprise Premium extension, do the following:

    1. Go to the Google Admin console .
    2. Click Chrome browser > Apps & Extensions.
    3. Click the Users & browserstab.
    4. To add the Chrome extension, click the +button.

    5. Search for the following extension, and then require it to be installed for all of the users in the organization unit or group:

      ekajlcmdfcigmdbphhifahdfjbkciflj

    6. Click the installed extension, and in the Policy for extensionsfield, enter the following JSON value:

       { 
  
 "securityGateway" 
 : 
  
 { 
  
 "Value" 
 : 
  
 { 
  
 "authentication" 
 : 
  
 {}, 
  
 "context" 
 : 
  
 { 
  
 "resource" 
 : 
  
 "projects/ PROJECT_ID 
/locations/global/securityGateways/ SECURITY_GATEWAY_ID 
" 
  
 } 
  
 } 
  
 } 
 }

      Replace the following:

      • PROJECT_ID : the ID of the project where the secure gateway is configured
      • SECURITY_GATEWAY_ID : the ID of the secure gateway

    7. To save the configuration, click Save.

    End user experience

    When the setup is complete, end users who access the protected SaaS application are granted or denied access based on the access policy applied to the application.

    Accessing the application in Chrome

    The Chrome Enterprise Premium extension is required to direct traffic through the secure gateway. The extension handles the authentication between the user and the secure gateway. The extension is automatically installed through the domain policy.

    When users access the SaaS application that you configured, their traffic goes through the secure gateway, which checks if they satisfy the access policy. If the users pass the access policy checks, they're granted access to the application.

    When browser access to the application is rejected by the authorization policy, users receive an Access denied message.

    What's next

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