本页面简要介绍了您可以通过哪些方式使用专用 IP 地址连接到 AlloyDB for PostgreSQL 实例。
使用专用 IP 地址可确保您的数据流量保留在安全的网络中，并最大限度地降低被拦截的风险。资源的内部 IP 地址是其网络内部的地址，无法从互联网访问，可有效限制访问 AlloyDB 实例的范围和潜在攻击面。
专用 IP 连接方法
如需使用专用 IP 访问 AlloyDB 实例，您可以选择专用服务访问通道或 Private Service Connect。由于每种连接方法都有各自的优势和权衡，因此请根据本文档中的信息，选择最符合您具体要求的方法。
专用服务访问通道
专用服务访问通道是作为您的虚拟私有云 (VPC) 网络与 AlloyDB for PostgreSQL 实例所在的底层 Google Cloud VPC 网络之间的 VPC 对等互连连接实现的。通过专用连接，您的 VPC 网络中的虚拟机实例与您访问的服务可以使用内部 IP 地址进行专有的通信。虚拟机实例不需要访问互联网或具备外部 IP 地址，即可访问通过专用服务访问通道提供的服务。
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