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description=Create root and intermediate certificates and upload them to a Certificate Manager TrustConfig resource.;

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le or copy the contents of the certificate click add in the trust store section click add intermediate ca and upload the pem encoded certificate file or copy the contents of the certificate this step lets you add another level of trust between the root certificate and your server certificate click add to add the intermediary ca optional in the allowlisted certificates section click add certificate and upload the pem encoded certificate file or copy the contents of the certificate click add to add the allowlisted certificate click create verify that the new trust config resource appears in the list of configurations gcloud create a trust config yaml file trust_config yaml that specifies the trust config parameters this example trust config resource contains a trust store with a trust anchor and an intermediate certificate it reads the certificate content from the environment variables created in the previous format the certificates step cat eof trust_config yaml truststores trustanchors pemcertificate root_cert intermediatecas pemcertificate intermediate_cert eof to create a trust store with additional trust anchors or intermediate certificates add pemcertificate rows in the appropriate section optional specify the certificate that is added to the trust config yaml file in the allowlistedcertificates field you don t need a trust store to add a certificate to an allowlist cat eof trust_config yaml allowlistedcertificates pemcertificate allowlisted_cert eof a certificate that is added to an allowlist represents any certificate that can be encapsulated within the trust config so that it is always considered valid you can specify multiple certificates in an allowlist by using multiple instances of the pemcertificate field to import the trust config yaml file use the gcloud certificate manager trust configs import command global for global external application load balancers classic application load balancers and cross region internal application load balancers specify global as the location where the trust config resource is stored gcloud certificate manager trust configs import trust_config_name source trust_config yaml location global replace the following trust_config_name the name of the trust config resource regional for regional external application load balancers and regional internal application load balancers specify the region where the trust config resource is stored gcloud certificate manager trust configs import trust_config_name source trust_config yaml location location replace the following trust_config_name the name of the trust config resource location the region where the trust config resource is stored the default location is global create a client authentication resource a client authentication also called servertlspolicy resource lets you specify the server side tls mode and the trust config resource to use when validating client certificates when the client presents an invalid certificate or no certificate to the load balancer the clientvalidationmode specifies how the client connection is handled for more information see mtls client validation modes when the clientvalidationmode is set to allow_invalid_or_missing_client_cert all requests are passed to the backend even if the validation fails or the client certificate is missing when the clientvalidationmode is set to reject_invalid only requests that supply a client certificate that can be validated against a trustconfig resource are passed to the backend to create a client authentication servertlspolicy resource complete the following steps console in the google cloud console go to the authentication configuration page go to authentication configuration on the client authentication tab click create enter a name for the client authentication resource for location select global or regional for global external application load balancers classic application load balancers and cross region internal application load balancers set the location to global for regional external application load balancers and regional internal application load balancers set the location to the region where the load balancer is configured for client authentication mode select load balancing select a client validation mode select the trust config resource that you created earlier optional click equivalent code to view the terraform configuration for this resource click create verify that the client authentication servertlspolicy is displayed gcloud based on how you want to handle the connection select one of the following options to define the client authentication servertlspolicy resource in yaml format option 1 clientvalidationmode is set to allow_invalid_or_missing_client_cert global for global external application load balancers classic application load balancers and cross region internal application load balancers create a yaml file that declaratively specifies the client validation mode and a global trust config resource cat server_tls_policy yaml name server_tls_policy_name mtlspolicy clientvalidationmode allow_invalid_or_missing_client_cert clientvalidationtrustconfig projects project_id locations global trustconfigs trust_config_name eof regional for regional external application load balancers and regional internal application load balancers create a yaml file that declaratively specifies the client validation mode and a regional trust config resource cat server_tls_policy yaml name server_tls_policy_name mtlspolicy clientvalidationmode allow_invalid_or_missing_client_cert clientvalidationtrustconfig projects project_id locations region trustconfigs trust_config_name eof option 2 clientvalidationmode is set to reject_invalid global for global external application load balancers classic application load balancers and cross region internal application load balancers create a yaml file that declaratively specifies the client validation mode and a global trust config resource cat server_tls_policy yaml name server_tls_policy_name mtlspolicy clientvalidationmode reject_invalid clientvalidationtrustconfig projects project_id locations global trustconfigs trust_config_name eof regional for regional external application load balancers and regional internal application load balancers create a yaml file that declaratively specifies the client validation mode and a regional trust config resource cat server_tls_policy yaml name server_tls_policy_name mtlspolicy clientvalidationmode reject_invalid clientvalidationtrustconfig projects project_id locations region trustconfigs trust_config_name eof replace the following server_tls_policy_name the name of the client authentication servertlspolicy resource project_id the id of your google cloud project location for global external application load balancers classic application load balancers and cross region internal application load balancers use global for regional external application load balancer or regional internal application load balancer use the region where you configured the load balancer trust_config_name the name of the trust config resource that you created earlier to import the client authentication servertlspolicy resource use the gcloud network security server tls policies import command global for global external application load balancers classic application load balancers and cross region internal application load balancers set the location flag to global gcloud network security server tls policies import server_tls_policy_name source server_tls_policy yaml location global replace the following server_tls_policy_name the name of the client authentication servertlspolicy resource regional for regional external application load balancers and regional internal application load balancers set the location flag to the region where the load balancer is configured gcloud network security server tls policies import server_tls_policy_name source server_tls_policy yaml location location replace the following server_tls_policy_name the name of the client authentication servertlspolicy resource optional to list all the client authentication servertlspolicies resources use the gcloud network security server tls policies list command gcloud network security server tls policies list location location replace the following location for global external application load balancers classic application load balancers and cross region internal application load balancers use global for regional external application load balancer or regional internal application load balancer use the region where you configured the load balancer note to modify the client authentication servertlspolicy resource you must first delete the existing client authentication resource and then create a new client authentication resource you can then attach the client authentication resource to the target https proxy of the load balancer attach the client authentication resource to the load balancer for mutual tls authentication to work after you set up your load balancer you need to attach the client authentication servertlspolicy resource to the target https proxy resource of the load balancer console in the google cloud console go to the load balancing page go to load balancing from the list of load balancers select the load balancer to which you need to attach the client authentication servertlspolicy resource to click edit edit in the frontend configuration section for an https frontend expand the show advanced features section from the client authentication list select the client authentication resource click done click update gcloud to list all the target https proxy resources in your project use the gcloud compute target https proxies list command gcloud compute target https proxies list note the name of the target https proxy to attach the servertlspolicy resource to this name is referred to as target_https_proxy_name in the following steps to export a target https proxy s configuration to a file use the gcloud compute target https proxies export command global gcloud compute target https proxies export target_https_proxy_name destination target_proxy_filename global replace the following target_https_proxy_name the name of the target proxy target_proxy_filename the name of the target proxy s configuration file in yaml format for example mtls_target_proxy yaml regional gcloud compute target https proxies export target_https_proxy_name destination target_proxy_filename region region replace the following target_https_proxy_name the name of the target proxy target_proxy_filename the name of the target proxy s configuration file in yaml format for example mtls_target_proxy yaml region the region where you configured the load balancer to list all the client authentication servertlspolicy resources use the gcloud network security server tls policies list command gcloud network security server tls policies list location location replace the following location for cross region internal application load balancer global external application load balancer or classic application load balancer use global for regional external application load balancer or regional internal application load balancer use the region where you configured the load balancer note the name of the client authentication servertlspolicy resource to configure mtls this name is referred to as server_tls_policy_name in the next step append the client authentication servertlspolicy to the target https proxy echo servertlspolicy networksecurity googleapis com projects project_id locations location servertlspolicies server_tls_policy_name target_proxy_filename replace the following project_id the id of your google cloud project location for global external application load balancers or classic application load balancers andcross region internal application load balancers use global for regional external application load balancer or regional internal application load balancer use the region where you configured the load balancer server_tls_policy_name the name of the client authentication servertlspolicy resource target_proxy_filename the name of the target proxy s configuration file in yaml format to import a target https proxy s configuration from a file use the gcloud compute target https proxies import command global gcloud compute target https proxies import target_https_proxy_name source target_proxy_filename global replace the following target_https_proxy_name the name of the target proxy target_proxy_filename the name of the target proxy s configuration file in yaml format for example mtls_target_proxy yaml regional gcloud compute target https proxies import target_https_proxy_name source target_proxy_filename region region replace the following target_https_proxy_name the name of the target proxy target_proxy_filename the name of the target proxy s configuration file in yaml format for example mtls_target_proxy yaml region the region where you configured the load balancer add mtls custom headers when you enable mtls you can pass information about the mtls connection using custom headers you can also enable logging so that mtls connection failures are captured in the logs add mtls custom headers to backend services for global external application load balancers or classic application load balancers you can use custom headers to pass information about the mtls connection to backend services to list all the backend services in the project use the gcloud compute backend services list command gcloud compute backend services list note the name of the backend service to enable custom headers and logging this name is referred to as backend_service in the following step to update the backend service use the gcloud compute backend services update command gcloud compute backend services update backend_service global enable logging logging sample rate 1 custom request header x client cert present client_cert_present custom request header x client cert chain verified client_cert_chain_verified custom request header x client cert error client_cert_error custom request header x client cert hash client_cert_sha256_fingerprint custom request header x client cert serial number client_cert_serial_number custom request header x client cert spiffe client_cert_spiffe_id custom request header x client cert uri sans client_cert_uri_sans custom request header x client cert dnsname sans client_cert_dnsname_sans custom request header x client cert valid not before client_cert_valid_not_before custom request header x client cert valid not after client_cert_valid_not_after note you can provide your own custom header names the names used in the custom request header options are just examples you can enable some or all of the mtls custom headers add mtls custom headers to url map for cross region internal application load balancer regional external application load balancer or regional internal application load balancer you can use custom headers to pass information about the mtls connection to the url map to list all t...