91 lines
3.8 KiB
Markdown
91 lines
3.8 KiB
Markdown
---
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type: howto
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---
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# Enforce Two-factor Authentication (2FA)
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Two-factor Authentication (2FA) provides an additional level of security to your
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users' GitLab account. Once enabled, in addition to supplying their username and
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password to login, they'll be prompted for a code generated by an application on
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their phone.
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You can read more about it here:
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[Two-factor Authentication (2FA)](../user/profile/account/two_factor_authentication.md)
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## Enforcing 2FA for all users
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Users on GitLab, can enable it without any admin's intervention. If you want to
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enforce everyone to set up 2FA, you can choose from two different ways:
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- Enforce on next login.
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- Suggest on next login, but allow a grace period before enforcing.
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After the configured grace period has elapsed, users will be able to log in but
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won't be able to leave the 2FA configuration area at `/profile/two_factor_auth`.
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To enable 2FA for all users:
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1. Navigate to **Admin area > Settings > General** (`/admin/application_settings`).
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1. Expand the **Sign-in restrictions** section, where you can configure both.
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If you want 2FA enforcement to take effect on next login, change the grace
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period to `0`.
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## Enforcing 2FA for all users in a group
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If you want to enforce 2FA only for certain groups, you can:
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1. Enable it in the group's **Settings > General** page.
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1. Optionally specify a grace period as above.
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To change this setting, you need to be administrator or owner of the group.
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> [From](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/24965) GitLab 12.0, 2FA settings for a group are also applied to subgroups.
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If you want to enforce 2FA only for certain groups, you can enable it in the
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group settings and specify a grace period as above. To change this setting you
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need to be administrator or owner of the group.
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The following are important notes about 2FA:
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- Projects belonging to a 2FA-enabled group that
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[is shared](../user/project/members/share_project_with_groups.md)
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with a 2FA-disabled group will *not* require members of the 2FA-disabled group to use
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2FA for the project. For example, if project *P* belongs to 2FA-enabled group *A* and
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is shared with 2FA-disabled group *B*, members of group *B* can access project *P*
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without 2FA. To ensure this scenario doesn't occur,
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[prevent sharing of projects](../user/group/index.md#share-with-group-lock)
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for the 2FA-enabled group.
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- If you add additional members to a project within a group or subgroup that has
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2FA enabled, 2FA is **not** required for those individually added members.
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- If there are multiple 2FA requirements (for example, group + all users, or multiple
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groups) the shortest grace period will be used.
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## Disabling 2FA for everyone
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There may be some special situations where you want to disable 2FA for everyone
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even when forced 2FA is disabled. There is a rake task for that:
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```sh
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# Omnibus installations
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sudo gitlab-rake gitlab:two_factor:disable_for_all_users
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# Installations from source
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sudo -u git -H bundle exec rake gitlab:two_factor:disable_for_all_users RAILS_ENV=production
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```
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CAUTION: **Caution:**
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This is a permanent and irreversible action. Users will have to
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reactivate 2FA from scratch if they want to use it again.
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<!-- ## Troubleshooting
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Include any troubleshooting steps that you can foresee. If you know beforehand what issues
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one might have when setting this up, or when something is changed, or on upgrading, it's
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important to describe those, too. Think of things that may go wrong and include them here.
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This is important to minimize requests for support, and to avoid doc comments with
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questions that you know someone might ask.
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Each scenario can be a third-level heading, e.g. `### Getting error message X`.
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If you have none to add when creating a doc, leave this section in place
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but commented out to help encourage others to add to it in the future. -->
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