# GitLab System Security Baseline

![GitLab platform baseline](/files/JOj1V5TFmyU3pPn65oWT)

> **Intro:** GitLab is simultaneously a source platform, CI engine, artifact hub, and release-control plane. Hardening it means hardening both the platform and the runner boundary.

## Platform baseline

```ruby
external_url 'https://gitlab.example.com'
nginx['redirect_http_to_https'] = true
gitlab_rails['gitlab_default_can_create_group'] = false
gitlab_rails['gitlab_signup_enabled'] = false
gitlab_rails['gitlab_restricted_visibility_levels'] = ['public']
```

## Runner baseline

```toml
[[runners]]
  name = "isolated-docker-runner"
  executor = "docker"
  environment = ["FF_ENABLE_JOB_CLEANUP=1"]
  [runners.docker]
    privileged = false
    pull_policy = "always"
    disable_cache = true
    cap_drop = ["ALL"]
```

## Control goals

* isolate runners from the GitLab application plane
* avoid privileged runners except in isolated special cases
* protect variables, branches, tags, and environments
* use pinned CI/CD components
* retain evidence, backups, and auditability

## Cross-links

* [Runner Isolation and Trust Boundaries](/devsecops-cicd-and-supply-chain/index-1/runner-isolation-and-trust-boundaries.md)
* [Protected Environments and Deployment Approvals](/devsecops-cicd-and-supply-chain/index-1/protected-environments-and-deployment-approvals.md)
* [🚨 GitLab Top 10 Misconfigurations](/devsecops-cicd-and-supply-chain/index-1/gitlab-top-10-misconfigurations.md)

![Footer](/files/fQNzMAKOWjRP989toSYF)


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