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Restricting network traffic to your enterprise with an IP allow list

You can restrict access to your enterprise and only allow access to your resources from specified IP addresses by using an IP allow list.

Who can use this feature

Enterprise owners can configure IP allow lists.

About network traffic restrictions

By default, authorized users can access your enterprise from any IP address. You can restrict access to resources by configuring an allow list for specific IP addresses. For example, you can allow access from only the IP address of your office network. The allow list for IP addresses will block access to private resources via the web, API, and Git from any IP addresses that are not on the allow list.

By default, Azure network security group (NSG) rules leave all inbound traffic open on ports 22, 80, 443, and 25. You can contact GitHub Support to configure access restrictions for GitHub AE.

For restrictions using Azure NSGs, contact GitHub Support with the IP addresses that should be allowed to access GitHub AE. Specify address ranges using the standard CIDR (Classless Inter-Domain Routing) format. GitHub Support will configure the appropriate firewall rules to restrict network access over HTTP, SSH, HTTPS, and SMTP. For more information, see "Receiving help from GitHub Support."

Enabling allowed IP addresses

After you create an IP allow list, you can enable allowed IP addresses. When you enable allowed IP addresses, GitHub immediately enforces any enabled entries in your IP allow list.

Before you enable your IP allow list, you can check whether your allow list will permit a connection from a particular IP address. For more information, see "Checking if an IP address is permitted."

  1. In the top-right corner of GitHub AE, click your profile photo, then click Enterprise settings. "Enterprise settings" in drop-down menu for profile photo on GitHub AE

  2. In the enterprise account sidebar, click Settings. Settings tab in the enterprise account sidebar

  3. In the left sidebar, click Security. Security tab in the enterprise account settings sidebar

  4. Under "IP allow list", select Enable IP allow list. Checkbox to allow IP addresses

  5. Click Save.

Adding an allowed IP address

You can create an IP allow list by adding entries that each contain an IP address or address range. After you finish adding entries, you can check whether a particular IP address would be allowed by any of the enabled entries in your list.

Before the list restricts access to your enterprise, you must also enable allowed IP addresses.

  1. In the top-right corner of GitHub AE, click your profile photo, then click Enterprise settings. "Enterprise settings" in drop-down menu for profile photo on GitHub AE

  2. In the enterprise account sidebar, click Settings. Settings tab in the enterprise account sidebar

  3. In the left sidebar, click Security. Security tab in the enterprise account settings sidebar

  4. At the bottom of the "IP allow list" section, enter an IP address, or a range of addresses in CIDR notation. Key field to add IP address

  5. Optionally, enter a description of the allowed IP address or range. Key field to add name for IP address

  6. Click Add. Add allowed ip address button

  7. Optionally, check if a particular IP address would be allowed by any of the enabled entries in your list. For more information, see "Checking if an IP address is permitted."

Allowing access by GitHub Apps

If you're using an allow list, you can also choose to automatically add to your allow list any IP addresses configured for GitHub Apps that are installed in your enterprise.

If you select Enable IP allow list configuration for installed GitHub Apps in your allow list settings, then IP addresses from installed GitHub Apps are added to your allow list. This happens irrespective of whether your allow list is currently enabled. If you install a GitHub App and then the creator of that application changes the addresses in its allow list, your allow list is automatically updated with those changes.

You can identify the IP addresses that have been automatically added from GitHub Apps by reviewing the description field. The description for these IP addresses is: "Managed by the NAME GitHub App." Unlike addresses you add manually, you cannot edit, delete, or disable IP addresses that are automatically added from GitHub Apps.

Note: The addresses in the IP allow list of a GitHub App only affect requests made by installations of the GitHub App. The automatic addition of a GitHub App's IP address to an organization's allow list does not allow access to a GitHub AE user who connects from that IP address.

For more information about how to create an allow list for a GitHub App you have created, see "Managing allowed IP addresses for a GitHub App."

To enable automatic addition of IP addresses for GitHub Apps:

  1. In the top-right corner of GitHub AE, click your profile photo, then click Enterprise settings. "Enterprise settings" in drop-down menu for profile photo on GitHub AE

  2. In the enterprise account sidebar, click Settings. Settings tab in the enterprise account sidebar

  3. In the left sidebar, click Security. Security tab in the enterprise account settings sidebar

  4. Select Enable IP allow list configuration for installed GitHub Apps. If you are using Enterprise Managed Users with OIDC, first select GitHub as your IP allow list configuration, then select Enable IP allow list configuration for installed GitHub Apps. Checkbox to allow GitHub App IP addresses

  5. Click Save.

Editing an allowed IP address

You can edit an entry in your IP allow list. If you edit an enabled entry, changes are enforced immediately.

After you finish editing entries, you can check whether your allow list will permit a connection from a particular IP address after you enable the list.

  1. In the top-right corner of GitHub AE, click your profile photo, then click Enterprise settings. "Enterprise settings" in drop-down menu for profile photo on GitHub AE

  2. In the enterprise account sidebar, click Settings. Settings tab in the enterprise account sidebar

  3. In the left sidebar, click Security. Security tab in the enterprise account settings sidebar

  4. Under "IP allow list", to the right of the entry you want to edit, click Edit. Edit allowed IP address button

  5. Type an IP address, or range of addresses, in CIDR notation. Key field to add IP address

  6. Type a description of the allowed IP address or range. Key field to add name for IP address

  7. Click Update.

  8. Optionally, check if a particular IP address would be allowed by any of the enabled entries in your list. For more information, see "Checking if an IP address is permitted."

Checking if an IP address is permitted

You can check whether a particular IP address would be allowed by any of the enabled entries in your IP allow list, even if the list is not currently enabled.

  1. In the top-right corner of GitHub AE, click your profile photo, then click Enterprise settings. "Enterprise settings" in drop-down menu for profile photo on GitHub AE

  2. In the enterprise account sidebar, click Settings. Settings tab in the enterprise account sidebar

  3. In the left sidebar, click Security. Security tab in the enterprise account settings sidebar

  4. Under "Check IP address", enter an IP address. Screenshot of the "Check IP address" text field

Deleting an allowed IP address

  1. In the top-right corner of GitHub AE, click your profile photo, then click Enterprise settings. "Enterprise settings" in drop-down menu for profile photo on GitHub AE

  2. In the enterprise account sidebar, click Settings. Settings tab in the enterprise account sidebar

  3. In the left sidebar, click Security. Security tab in the enterprise account settings sidebar

  4. Under "IP allow list", to the right of the entry you want to delete, click Delete. Delete allowed IP address button

  5. To permanently delete the entry, click Yes, delete this IP allow list entry. Permanently delete IP allow list entry button

Using GitHub Actions with an IP allow list

To allow your self-hosted runners to communicate with GitHub, add the IP address or IP address range of your self-hosted runners to the IP allow list. For more information, see "Adding an allowed IP address."