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Policies

Cloudflare Access determines who can reach your application by applying the Access policies you configure.

Every Access policy has four building blocks:

  • Actions: What happens when a user matches the policy (Allow, Block, Bypass, or Service Auth)
  • Rule types: How criteria are combined (Include, Require, or Exclude)
  • Selectors: The attributes being checked (for example, email domain, country, or device posture)
  • Values: The specific values to match against (for example, @example.com)

Actions

Actions let you grant or deny permission to a certain user or user group. You can set only one action per policy.

Allow

The Allow action allows users that meet certain criteria to reach an application behind Access.

The following example lets any user with an @example.com email address, as validated against an IdP, reach the application:

ActionRule typeSelectorValue
AllowIncludeEmails Ending In:@example.com

You can add a Require rule in the same policy action to enforce additional checks. Finally, if the policy contains an Exclude rule, users meeting that definition are prevented from reaching the application.

For example, this second configuration lets any user from Portugal with a @team.com email address, as validated against an IdP, reach the application, except for user-1 and user-2:

ActionRule typeSelectorValue
AllowIncludeCountryPortugal
RequireEmails Ending In@team.com
ExcludeEmailuser-1@team.com, user-2@team.com

Block

The Block action prevents users who meet certain critera from reaching an application behind Access. For example, the following policy blocks requests from Russian source IPs that are not on your list of approved IPs.

ActionRule typeSelectorValue
BlockIncludeCountryRussian Federation
ExcludeIP listCorporate IP allowlist

Block policies are best used in conjunction with Allow policies as a way to carve out exceptions in those Allow policies. Since Access is deny by default, users who do not match a Block policy will still be denied access unless they explicitly match an Allow policy.

Bypass

The Bypass action disables any Access enforcement for traffic that meets the defined rule criteria. Bypass is typically used to enable applications that require specific endpoints to be public.

For example, some applications have an endpoint under the /admin route that must be publicly routable. In this situation, you could create an Access application for the domain test.example.com/admin/<your-url> and add the following Bypass policy:

ActionRule typeSelectorValue
BypassIncludeEveryoneEveryone

As part of implementing a Zero Trust security model, Cloudflare does not recommend using Bypass to grant direct permanent access to your internal applications. To enable seamless and secure access for on-network employees, use Cloudflare Tunnel to connect your private network and have users connect through the Cloudflare One Client.

Product compatibility

Bypass policies which contain device posture check rules will not function when Zaraz is enabled for the zone protected by Access, or if a Worker intercepts the request. To work around this limitation and bypass Access, change the policy action to Service Auth.

Service Auth

Service Auth rules enforce authentication flows that do not require an identity provider IdP login, such as service tokens and mutual TLS.

ActionRule typeSelector
Service AuthIncludeValid certificate

Rule types

Rule types determine how your criteria are combined to evaluate a user. All Access policies must contain at least one Include rule. This Include rule defines the initial pool of eligible users who can access an application. You can then add Exclude and Require rules to narrow the scope.

Rule typeLogicEffect
IncludeORUser must match at least one Include rule.
ExcludeNOTUser matching any Exclude criterion is denied access, even if they match an Include rule.
RequireANDUser must match all Require criteria in addition to matching an Include rule.

Require rules with OR operators

By default, multiple values in a Require rule are joined with AND logic. This can produce unexpected results.

Example problem: You want to allow employees and contractors in Portugal or the United States. If you configure:

ActionRule typeSelectorValue
AllowRequireCountryUnited States, Portugal
RequireEmails ending in@cloudflare.com, @contractors.com

This policy requires the user to be in the United States AND Portugal simultaneously, and have an email ending in both @cloudflare.com AND @contractors.com. No user can satisfy all conditions, so nobody gets access.

Solution: Use a rule group to convert AND logic to OR logic within a Require rule.

  1. Create a rule group called Country requirements that includes users in Portugal OR the United States:

    Rule typeSelectorValue
    IncludeCountryUnited States, Portugal
  2. Create a policy that requires the rule group and includes users with either email domain:

    ActionRule typeSelectorValue
    AllowRequireRule groupCountry requirements
    IncludeEmails ending in@cloudflare.com, @contractors.com

Selectors

When you add a rule to your policy, you will be asked to specify the criteria/attributes you want users to meet. These attributes are available for all Access application types, including SaaS, self-hosted, and non-HTTP applications.

Non-identity attributes are polled continuously, meaning they are evaluated with each new HTTP request for changes during the user session. If you have configured SCIM provisioning, you can force a user to re-attest all attributes with Access whenever you revoke the user in the IdP or update their IdP group membership.

SelectorDescriptionChecked at loginChecked continuously1Identity-based selector?
Emailsyou@company.com
Emails ending in@company.com
External EvaluationAllows or denies access based on custom logic in an external API.
IP ranges192.168.100.1/24 (supports IPv4/IPv6 addresses and CIDR ranges)
CountryUses the IP address to determine country.
EveryoneAllows, denies, or bypasses access to everyone.
Common NameThe request will need to present a valid certificate with an expected common name.
Valid CertificateThe request will need to present any valid client certificate.
Service TokenThe request will need to present the correct service token headers configured for the specific application. Requires the Service Auth action.
Any Access Service TokenThe request will need to present the headers for any service token created for this account. Requires the Service Auth action.
User Risk ScoreThe user's current risk score (Low, Medium, or High). Acts as a threshold — users with a score at or below the specified level pass the check. This selector only displays for Enterprise plans.
Linked App TokenChecks for a valid OAuth access token issued to a specific Access for SaaS application. Requires the Service Auth action.
Login MethodsChecks the identity provider used at the time of login.
Authentication MethodChecks the multifactor authentication method used by the user, if supported by the identity provider.
Identity provider groupChecks the user groups configured with your identity provider (IdP). This selector only displays if you use Microsoft Entra ID, GitHub, Google, Okta, or an IdP that provisions groups with SCIM.
SAML GroupChecks a SAML attribute name / value pair. This selector only displays if you use a generic SAML identity provider.
OIDC ClaimChecks an OIDC claim name / value pair. This selector only displays if you use a generic OIDC identity provider.
Device postureChecks device posture signals from the Cloudflare One Client or a third-party service provider. This selector only displays after you create a device posture check.
WarpChecks that the device is connected to the Cloudflare One Client, including the consumer version. This selector only displays after you enable the WARP posture check.
GatewayChecks that the device is connected to your Zero Trust instance through the Cloudflare One Client. This selector only displays after you enable the Gateway posture check.

1 For SaaS applications, Access can only enforce policies at the time of initial sign on and when reissuing the SaaS session. Once the user has authenticated to the SaaS app, session management falls solely within the purview of the SaaS app.

Connection context

Connection context settings allow you to control how users interact with an application after they have been granted access. While selectors determine who can access an application, connection context settings determine what actions users can take during their session.

Connection context is configured per policy, allowing you to grant different permissions to different groups of users. For example, you could allow full-time employees to copy data from a remote RDP session while restricting contractors to read-only access.

The available connection context settings depend on the application type:

Application typeAvailable settings
Infrastructure (SSH)Allowed UNIX usernames
Browser-based RDPClipboard controls (copy/paste restrictions)

Order of execution

Policies are not evaluated strictly in the order they appear in the UI. Instead, Access groups policies by action type and evaluates them in two phases:

  1. Phase 1 — All Bypass and Service Auth policies are evaluated first, from top to bottom.
  2. Phase 2 — All Allow and Block policies are evaluated in order, from top to bottom. Once a user matches an Allow or Block policy, evaluation stops and no subsequent policies can override the decision.

For example, if you have policies arranged as follows:

  • Allow A
  • Block B
  • Service Auth C
  • Bypass D
  • Allow E

The actual evaluation order is: Service Auth C > Bypass D > Allow A > Block B > Allow E.

Common misconfigurations

If you add any of the following rules to an Allow policy, anyone will be able to access your application.

Include everyone

Rule typeSelectorValue
IncludeEveryoneEveryone

Include all valid emails

Rule typeSelectorValue
IncludeLogin MethodsOne-time PIN

Additional resources

  • API and Terraform provide programmatic ways to manage your Access policies and configurations.