Note: OpenID Connect (OIDC) and Conditional Access Policy (CAP) support for Enterprise Managed Users is in public beta and only available for Azure AD.
When your enterprise uses OIDC SSO, GitHub will automatically use your IdP's conditional access policy (CAP) IP conditions to validate user interactions with GitHub, when members change IP addresses, and each time a personal access token or SSH key is used.
CAP support is enabled automatically for any enterprise with managed users that enables OIDC SSO and cannot be disabled. GitHub enforces your IdP's IP conditions but not device compliance conditions.
Note: If you use Conditional Access (CA) network location policies in your Azure AD tenant, do not use the IP allow list feature on GitHub.com, with your enterprise account or with any of the organizations owned by the enterprise. Using both is unsupported and can result in the wrong policy applying. For more information about IP allow lists, see "Enforcing security settings in your enterprise" and "Managing allowed IP addresses for your organization."
GitHub sends the originating IP address to your IdP for validation against your CAP. To make sure actions and apps are not blocked by your IdP's CAP, you will need to make changes to your configuration.
Warning: If you use GitHub Enterprise Importer to migrate an organization from your GitHub Enterprise Server instance, make sure to use a service account that is exempt from Azure AD's CAP otherwise your migration may be blocked.
Actions that use a personal access token will likely be blocked by your IdP's CAP. We recommend that personal access tokens are created by a service account which is then exempted from IP controls in your IdP's CAP.
If you're unable to use a service account, another option for unblocking actions that use personal access tokens is to allow the IP ranges used by GitHub Actions. For more information, see "About GitHub's IP addresses."
When GitHub Apps and OAuth Apps make requests on a member's behalf, GitHub will send the IP address of the app's server to your IdP for validation. If the IP address of the app's server is not validated by your IdP's CAP, the request will fail.
You can contact the owners of the apps you want to use, ask for their IP ranges, and configure your IdP's CAP to allow access from those IP ranges. If you're unable to contact the owners, you can review your IdP sign-in logs to review the IP addresses seen in the requests, then allow-list those addresses.
You can also enable IP allow list configuration for installed GitHub Apps. When enabled, all GitHub Apps and OAuth Apps will continue working regardless of the originating IP address. For more information, see "Enforcing policies for security settings in your enterprise."