Identity-Aware Proxy audit logging

Important:

On February 14, 2024, the Cloud Audit Logging (CAL) type was inadvertently changed from DATA_ACCESS to ADMIN_ACTIVITY. This change causes a change in the log name and log bucket location for the UpdateIapSettings and ValidateIapAttributeExpression methods.

The CAL type has been changed back to DATA_ACCESS.

This document describes audit logging for Identity-Aware Proxy. Google Cloud services generate audit logs that record administrative and access activities within your Google Cloud resources. For more information about Cloud Audit Logs, see the following:

• Types of audit logs
• Audit log entry structure
• Storing and routing audit logs
• Cloud Logging pricing summary
• Enable Data Access audit logs

Notes

The fields section describes important details about some fields in the audit log.

Service name

Identity-Aware Proxy audit logs use the service name iap.googleapis.com. Filter for this service:

    protoPayload.serviceName="iap.googleapis.com"
  

Methods by permission type

Each IAM permission has a type property, whose value is an enum that can be one of four values: ADMIN_READ, ADMIN_WRITE, DATA_READ, or DATA_WRITE. When you call a method, Identity-Aware Proxy generates an audit log whose category is dependent on the type property of the permission required to perform the method. Methods that require an IAM permission with the type property value of DATA_READ, DATA_WRITE, or ADMIN_READ generate Data Access audit logs. Methods that require an IAM permission with the type property value of ADMIN_WRITE generate Admin Activity audit logs.

Permission type	Methods
ADMIN_READ	google.cloud.iap.v1.IdentityAwareProxyAdminService.GetIamPolicy google.cloud.iap.v1.IdentityAwareProxyAdminService.GetIapSettings google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.GetIamPolicy
ADMIN_WRITE	google.cloud.iap.v1.IdentityAwareProxyAdminService.SetIamPolicy google.cloud.iap.v1.IdentityAwareProxyAdminService.ValidateIapAttributeExpression google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.SetIamPolicy
DATA_READ	google.cloud.iap.v1.IdentityAwareProxyAdminService.GetTunnelDestGroup google.cloud.iap.v1.IdentityAwareProxyAdminService.ListTunnelDestGroups
DATA_WRITE	google.cloud.iap.v1.IdentityAwareProxyAdminService.CreateTunnelDestGroup google.cloud.iap.v1.IdentityAwareProxyAdminService.DeleteTunnelDestGroup google.cloud.iap.v1.IdentityAwareProxyAdminService.UpdateIapSettings google.cloud.iap.v1.IdentityAwareProxyAdminService.UpdateTunnelDestGroup

API interface audit logs

For information about how and which permissions are evaluated for each method, see the Identity and Access Management documentation for Identity-Aware Proxy.

google.cloud.iap.v1.IdentityAwareProxyAdminService

The following audit logs are associated with methods belonging to google.cloud.iap.v1.IdentityAwareProxyAdminService.

CreateTunnelDestGroup

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.CreateTunnelDestGroup
  
• Audit log type: Data access
  
• Permissions:
  • iap.tunnelDestGroups.create - DATA_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.CreateTunnelDestGroup"
  

DeleteTunnelDestGroup

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.DeleteTunnelDestGroup
  
• Audit log type: Data access
  
• Permissions:
  • iap.tunnelDestGroups.delete - DATA_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.DeleteTunnelDestGroup"
  

GetIamPolicy

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.GetIamPolicy
  
• Audit log type: Data access
  
• Permissions:
  • iap.web.getIamPolicy - ADMIN_READ
  • iap.webServiceVersions.getIamPolicy - ADMIN_READ
  • iap.webServices.getIamPolicy - ADMIN_READ
  • iap.webTypes.getIamPolicy - ADMIN_READ
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.GetIamPolicy"
  

GetIapSettings

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.GetIapSettings
  
• Audit log type: Data access
  
• Permissions:
  • iap.projects.getSettings - ADMIN_READ
  • iap.web.getSettings - ADMIN_READ
  • iap.webServiceVersions.getSettings - ADMIN_READ
  • iap.webServices.getSettings - ADMIN_READ
  • iap.webTypes.getSettings - ADMIN_READ
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.GetIapSettings"
  

GetTunnelDestGroup

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.GetTunnelDestGroup
  
• Audit log type: Data access
  
• Permissions:
  • iap.tunnelDestGroups.get - DATA_READ
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.GetTunnelDestGroup"
  

ListTunnelDestGroups

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.ListTunnelDestGroups
  
• Audit log type: Data access
  
• Permissions:
  • iap.tunnelDestGroups.list - DATA_READ
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.ListTunnelDestGroups"
  

SetIamPolicy

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.SetIamPolicy
  
• Audit log type: Admin activity
  
• Permissions:
  • iap.web.setIamPolicy - ADMIN_WRITE
  • iap.webServiceVersions.setIamPolicy - ADMIN_WRITE
  • iap.webServices.setIamPolicy - ADMIN_WRITE
  • iap.webTypes.setIamPolicy - ADMIN_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.SetIamPolicy"
  

UpdateIapSettings

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.UpdateIapSettings
  
• Audit log type: Data access
  
• Permissions:
  • iap.projects.updateSettings - DATA_WRITE
  • iap.web.updateSettings - ADMIN_WRITE
  • iap.webServiceVersions.updateSettings - DATA_WRITE
  • iap.webServices.updateSettings - DATA_WRITE
  • iap.webTypes.updateSettings - DATA_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.UpdateIapSettings"
  

UpdateTunnelDestGroup

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.UpdateTunnelDestGroup
  
• Audit log type: Data access
  
• Permissions:
  • iap.tunnelDestGroups.update - DATA_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.UpdateTunnelDestGroup"
  

ValidateIapAttributeExpression

• Method: google.cloud.iap.v1.IdentityAwareProxyAdminService.ValidateIapAttributeExpression
  
• Audit log type: Admin activity
  
• Permissions:
  • iap.web.updateSettings - ADMIN_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1.IdentityAwareProxyAdminService.ValidateIapAttributeExpression"
  

google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1

The following audit logs are associated with methods belonging to google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.

GetIamPolicy

• Method: google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.GetIamPolicy
  
• Audit log type: Data access
  
• Permissions:
  • iap.web.getIamPolicy - ADMIN_READ
  • iap.webServiceVersions.getIamPolicy - ADMIN_READ
  • iap.webServices.getIamPolicy - ADMIN_READ
  • iap.webTypes.getIamPolicy - ADMIN_READ
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.GetIamPolicy"
  

SetIamPolicy

• Method: google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.SetIamPolicy
  
• Audit log type: Admin activity
  
• Permissions:
  • iap.webServiceVersions.setIamPolicy - ADMIN_WRITE
  • iap.webServices.setIamPolicy - ADMIN_WRITE
  • iap.webTypes.setIamPolicy - ADMIN_WRITE
• Method is a long-running or streaming operation: No.
  
• Filter for this method: protoPayload.methodName="google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.SetIamPolicy"
  

Methods that don't produce audit logs

A method might not produce audit logs for one or more of the following reasons:

• It is a high volume method involving signifcant log generation and storage costs.
• It has low auditing value.
• Another audit or platform log already provides method coverage.

The following methods don't produce audit logs:

• google.cloud.iap.v1.IdentityAwareProxyOAuthService.CreateBrand
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.CreateIdentityAwareProxyClient
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.DeleteIdentityAwareProxyClient
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.GetBrand
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.GetIdentityAwareProxyClient
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.ListBrands
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.ListIdentityAwareProxyClients
• google.cloud.iap.v1.IdentityAwareProxyOAuthService.ResetIdentityAwareProxyClientSecret
• google.cloud.iap.v1beta1.IdentityAwareProxyAdminV1Beta1.TestIamPermissions

Fields

The logs only contain information about the access levels that a user has met. Access levels that blocked an unauthorized request are not listed in the log entry. To determine what conditions are required to make a successful request for a given resource, check the access levels for the resource.

The following are important details about some fields in the log:

Field	Value
authenticationInfo	The email of the user who tried to access the resource as principalEmail. This information is not present in logs for unauthenticated requests.
requestMetadata.callerIp	The IP address the request originated from.
requestMetadata.requestAttributes	The request method and URL.
authorizationInfo.resource	The resource being accessed.
authorizationInfo.granted	A boolean representing whether IAP permitted the requested access.