在每個 Google Cloud 專案中設定存取權控管，以決定哪些使用者可以存取專案內的服務，包括 App Engine。您可以為不同的帳戶指派不同的角色，確保每個帳戶僅具備支援應用程式所需的權限。詳情請參閱「設定存取權控管」。
App Engine 防火牆
App Engine 防火牆可讓您透過一組規則來允許或拒絕來自指定 IP 位址範圍的要求，藉此控管 App Engine 應用程式的存取權。您不必為防火牆封鎖的流量或頻寬支付費用。建立防火牆之後，您就可以套用下列設定：
只允許來自特定網路的流量
確保只有特定網路中的某個 IP 位址範圍可以存取您的應用程式。舉例來說，您可以在應用程式測試階段建立規則，只允許公司私人網路中的 IP 位址範圍。接著，您可以在應用程式發布流程的各個階段中建立及修改防火牆規則，只允許特定機構 (您的公司或外部機構) 存取您的應用程式，藉此控管存取權範圍，直到應用程式公開發布為止。
雖然 Google Cloud 提供了許多防範攻擊的機制，但您仍可以使用 App Engine 防火牆，封鎖從帶有不良意圖的 IP 位址連向應用程式的流量，或防止應用程式受到阻斷服務攻擊和類似形式的濫用行為。您可以將 IP 位址或子網路新增至拒絕清單，這樣系統就會拒絕轉送來自這些位址和子網路的要求，將要求阻隔在 App Engine 應用程式之外。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間：2025-09-04 (世界標準時間)。"],[[["\u003cp\u003eThe \u003ccode\u003eREGION_ID\u003c/code\u003e is a code assigned by Google based on the region selected during app creation, included in App Engine URLs for apps created after February 2020.\u003c/p\u003e\n"],["\u003cp\u003eApp Engine offers multiple options for secure access via HTTPS, including \u003ccode\u003eappspot.com\u003c/code\u003e domains and custom domains with managed SSL certificates.\u003c/p\u003e\n"],["\u003cp\u003eAccess control within Google Cloud projects enables role-based permission assignments to control who can access App Engine services.\u003c/p\u003e\n"],["\u003cp\u003eThe App Engine firewall allows traffic control by enabling rules to allow or deny requests based on IP addresses, helping manage access and prevent abuse.\u003c/p\u003e\n"],["\u003cp\u003eThe Google Cloud Web Security Scanner helps identify vulnerabilities in App Engine apps by crawling the app and analyzing user inputs, with the requirement of project ownership to use it.\u003c/p\u003e\n"]]],[],null,["# Overview of app security\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\nGo Java Node.js PHP Python Ruby .NET Custom \n\n### Region ID\n\nThe \u003cvar translate=\"no\"\u003eREGION_ID\u003c/var\u003e is an abbreviated code that Google assigns\nbased on the region you select when you create your app. The code does not\ncorrespond to a country or province, even though some region IDs may appear\nsimilar to commonly used country and province codes. For apps created after\nFebruary 2020, \u003cvar translate=\"no\"\u003eREGION_ID\u003c/var\u003e`.r` is included in\nApp Engine URLs. For existing apps created before this date, the\nregion ID is optional in the URL.\n\nLearn more\n[about region IDs](/appengine/docs/flexible/python/how-requests-are-routed#region-id). \nOK\n\nSecurity is a core feature of the Google Cloud, but there are still steps you\nshould take to protect your App Engine app and identify vulnerabilities.\n\nUse the following features to ensure that your App Engine app is\nsecure. To learn more about the Google Security Model and the available steps\nthat you can take to secure your Google Cloud projects, see\n[Google Cloud Platform Security](/security).\n\nHTTPS requests\n--------------\n\nUse HTTPS requests to access to your App Engine app securely. Depending\non how your app is configured, you have the following options:\n\n`appspot.com` domains\n:\n - Use the `https` URL prefix to send HTTPS request to the `default` service of your Google Cloud project, for example: \n `https://`\u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003e\u003ca href=\"#appengine-urls\" style=\"border-bottom: 1px dotted #999\" class=\"devsite-dialog-button\" data-modal-dialog-id=\"regional_url\" track-type=\"progressiveHelp\" track-name=\"modalHelp\" track-metadata-goal=\"regionalURL\"\u003eREGION_ID\u003c/a\u003e\u003c/var\u003e`.r.appspot.com`\n\n\n \u003c!-- --\u003e\n\n - To target specific resources in your App Engine app, use the\n `-dot-` syntax to separate each resource you want to target, for\n example: \n\n\n `https://`\u003cvar translate=\"no\"\u003eVERSION\u003c/var\u003e`-dot-`\u003cvar translate=\"no\"\u003eSERVICE\u003c/var\u003e`-dot-`\u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003e\u003ca href=\"#appengine-urls\" style=\"border-bottom: 1px dotted #999\" class=\"devsite-dialog-button\" data-modal-dialog-id=\"regional_url\" track-type=\"progressiveHelp\" track-name=\"modalHelp\" track-metadata-goal=\"regionalURL\"\u003eREGION_ID\u003c/a\u003e\u003c/var\u003e`.r.appspot.com`\n\n - To convert an HTTP URL to an HTTPS URL, replace the periods\n between each resource with `-dot-`, for example: \n\n `http://`\u003cvar translate=\"no\"\u003eSERVICE_ID\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003eREGION_ID\u003c/var\u003e`.r.appspot.com` \n\n\n `https://`\u003cvar translate=\"no\"\u003eSERVICE_ID\u003c/var\u003e`-dot-`\u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e`.`\u003cvar translate=\"no\"\u003e\u003ca href=\"#appengine-urls\" style=\"border-bottom: 1px dotted #999\" class=\"devsite-dialog-button\" data-modal-dialog-id=\"regional_url\" track-type=\"progressiveHelp\" track-name=\"modalHelp\" track-metadata-goal=\"regionalURL\"\u003eREGION_ID\u003c/a\u003e\u003c/var\u003e`.r.appspot.com`\n\n\n For more information about HTTPS URLs and targeting resources, see\n [How Requests are\n Routed](/appengine/docs/flexible/how-requests-are-routed).\n\nCustom domains\n\n: To send HTTPS requests with your custom domain, you can use the managed SSL\n certificates that are provisioned by App Engine. For more information,\n see [Securing Custom Domains with\n SSL](/appengine/docs/flexible/securing-custom-domains-with-ssl).\n\n\nAccess control\n--------------\n\nIn each Google Cloud project, set up access control to determine\nwho can access the services within the project, including App Engine.\nYou can assign different roles to different accounts to ensure each account has\nonly the permissions it needs to support your app. For details see,\n[Setting Up Access\nControl](/appengine/docs/flexible/access-control).\n\nApp Engine firewall\n-------------------\n\nThe [App Engine\nfirewall](/appengine/docs/flexible/creating-firewalls)\nenables you to control access to your App Engine app through a set of\nrules that can either allow or deny requests from the specified ranges of IP\naddresses. You are not billed for traffic or bandwidth that is blocked by the\nfirewall. Create a firewall to:\n\nAllow only traffic from within a specific network\n: Ensure that only a certain range of IP addresses from specific networks can\n access your app. For example, create rules to allow only the range of IP\n addresses from within your company's private network during your app's testing\n phase. You can then create and modify your firewall rules to control the\n scope of access throughout your release process, allowing only certain\n organizations, either within your company or externally, to access your app\n as it makes its way to public availability.\n\nAllow only traffic from a specific service\n: Ensure that all the traffic to your App Engine app is first proxied\n through a specific service. For example, if you use a third-party Web\n Application Firewall (WAF) to proxy requests directed at your app, you can\n create firewall rules to deny all requests except those that are forwarded\n from your WAF.\n\nBlock abusive IP addresses\n: While Google Cloud has many mechanisms in place to prevent attacks, you can\n use the App Engine firewall to block traffic to your app from IP\n addresses that present malicious intent or shield your app from denial of\n service attacks and similar forms of abuse. You can add IP addresses or\n subnetworks to a denylist, so that requests routed from those addresses and\n subnetworks are\n denied before they reach your App Engine app.\n\nFor details about creating rules and configuring your firewall, see\n[Controlling App Access with\nFirewalls](/appengine/docs/flexible/creating-firewalls).\n\nIngress controls\n----------------\n\nYou can use Ingress controls to restrict inbound traffic to your App Engine\napp. By default, your App Engine app accepts traffic from all network origins.\nTo modify the default settings, and edit and view the available settings, see\n[Specify ingress settings](/appengine/docs/flexible/ingress-settings).\n\nSecurity scanner\n----------------\n\nThe Google Cloud [Web Security Scanner](/security-command-center/docs/concepts-web-security-scanner-overview)\ndiscovers vulnerabilities by crawling your\nApp Engine app, following all that links within the scope of your\nstarting URLs, and attempting to exercise as many user inputs and event\nhandlers as possible.\n\nIn order to use the security scanner, you must be an owner of the\nGoogle Cloud project. For more information on assigning roles, see\n[Setting Up Access\nControl](/appengine/docs/flexible/access-control).\n\nYou can run security scans from the Google Cloud console to identify security\nvulnerabilities in your App Engine app. For details about\nrunning the Security Scanner, see the\n[Using Web Security Scanner](/security-command-center/docs/how-to-use-web-security-scanner).\n\nVPC Service Controls\n--------------------\n\n[Not supported](/vpc-service-controls/docs/supported-products#appengine) in the App Engine flexible environment."]]
