借助 Private Service Connect,您可以使用内部 IP 地址在 VPC 网络中创建专用端点。专用网络访问功能可扩展此功能,并帮助Google Cloud 服务直接连接到 VPC 网络。
专用网络访问提供以下功能:
提供一种统一的方式来管理应用于所有网络路径的客户网络、安全和访问权限政策。
使 Google Cloud 产品能够通过 Google 的专用网络(而非互联网)访问客户专用网络中的一个或多个 HTTP(S) 端点。它还提供了一个符合 VPC Service Controls 要求的选项。这种通信有助于在使用 HTTP Push 等功能时提供更好的安全性、管理网络安全政策以及防范渗漏。 Google Cloud
下图展示了 Dialogflow 如何在不访问专用网络的情况下通过互联网连接到Google Cloud 虚拟机。请注意,Dialogflow 在 Google Cloud中运行。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["很难理解","hardToUnderstand","thumb-down"],["信息或示例代码不正确","incorrectInformationOrSampleCode","thumb-down"],["没有我需要的信息/示例","missingTheInformationSamplesINeed","thumb-down"],["翻译问题","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC):2025-08-11。"],[],[],null,["# Private network access overview\n\nPrivate network access enables supported Google Cloud products to send HTTP requests\nto a customer Virtual Private Cloud (VPC) network resource. The requests are sent\nover the private network while enforcing\n[Identity and Access Management (IAM)](/iam/docs/overview) and\n[VPC Service Controls](/vpc-service-controls/docs/overview).\n\nThe network resources supported as destinations are:\n\n- Virtual machine (VM) instances\n- Internal passthrough Network Load Balancers\n- Regional internal Application Load Balancers\n- On-premises IP addresses, reached through Cloud Interconnect or Cloud VPN\n\nWith [Private Service Connect](/vpc/docs/private-service-connect), you\ncan create private endpoints within your VPC network by using\ninternal IP addresses. Private network access extends the capability and helps\nGoogle Cloud services connect directly to VPC networks.\n\nPrivate network access offers the following features:\n\n- Provides a unified way of managing customer network, security, and access policies applied to all network paths.\n- Enables Google Cloud products to reach one or more HTTP(S) endpoints in customer private networks through the private network of Google rather than the internet. It also provides a VPC Service Controls-compliant option. The communication helps in providing better security, managing network security policies, and protecting against exfiltration while using Google Cloud features such as [HTTP\n Push](https://wikipedia.org/wiki/HTTP/2_Server_Push).\n\nThe following diagram shows how Dialogflow connects to a\nGoogle Cloud VM through the internet without private network access. Note that\nDialogflow runs within Google Cloud.\n[](/static/service-directory/images/without_pna.svg) Dialogflow connectivity without private network access (click to enlarge)\n\nThe following diagram shows how Dialogflow connects to a\nGoogle Cloud VM through the private network with private network access.\n[](/static/service-directory/images/with_pna.svg) Dialogflow connectivity with private network access (click to enlarge)\n\nFor detailed information about VPC Service Controls, see the [VPC Service Controls\ndocumentation](/vpc-service-controls/docs).\n\nFor information about how to configure private network access, see [Configuring\nprivate network access](/service-directory/docs/configuring-private-network-access).\n\nFor information about how you can use Service Directory private network access with\nDialogflow, see [Using Service Directory for\nprivate network access](/dialogflow/cx/docs/concept/webhook#sd).\n\nQuotas and limits\n-----------------\n\nThe following quotas and limits apply for private network access:\n\n- [Service Directory limits](/service-directory/quotas#limits) apply when you use private network access.\n- Calls from Google Cloud services that use private network access don't count against your quotas.\n- [Service Directory pricing](/service-directory/pricing) applies for calls from Google Cloud services that use private network access. Because Service Directory charges are per API call against the Service Directory service, each private network access is charged as one API call.\n\nWhat's next\n-----------\n\n- To learn about Service Directory, see [Service Directory\n overview](/service-directory/docs/overview).\n- To learn how to configure private network access, see [Configure\n private network access](/service-directory/docs/configuring-private-network-access).\n- To find solutions for common problems that you might experience when using Service Directory, see [Troubleshooting](/service-directory/docs/troubleshooting)."]]