# IP whitelist

> Introduced in GitLab 9.4.

NOTE: **Note:**
We intend to [rename IP whitelist as `IP allowlist`](https://gitlab.com/gitlab-org/gitlab/-/issues/7554).

GitLab provides some [monitoring endpoints](../../user/admin_area/monitoring/health_check.md)
that provide health check information when probed.

To control access to those endpoints via IP whitelisting, you can add single
hosts or use IP ranges:

**For Omnibus installations**

1. Open `/etc/gitlab/gitlab.rb` and add or uncomment the following:

   ```ruby
   gitlab_rails['monitoring_whitelist'] = ['127.0.0.0/8', '192.168.0.1']
   ```

1. Save the file and [reconfigure](../restart_gitlab.md#omnibus-gitlab-reconfigure) GitLab for the changes to take effect.

---

**For installations from source**

1. Edit `config/gitlab.yml`:

   ```yaml
   monitoring:
     # by default only local IPs are allowed to access monitoring resources
     ip_whitelist:
       - 127.0.0.0/8
       - 192.168.0.1
   ```

1. Save the file and [restart](../restart_gitlab.md#installations-from-source) GitLab for the changes to take effect.