Skip to content

BLOG.md

Latest commit

 

History

History
35 lines (27 loc) · 1.82 KB

BLOG.md

File metadata and controls

35 lines (27 loc) · 1.82 KB

Lessons Learned: Migrating from Keycloak to Authentik with SAML

Introduction

Migrating identity providers is a critical task in enterprise environments. This lab focused on replacing Keycloak with Authentik and integrating services like GlobalProtect and Snipe-IT using SAML authentication.

Key Learnings

1. TLS and PKI

  • Secure communication starts with proper TLS configuration.
  • Using a trusted Root CA and applying certificates under Authentik's System → Certificates ensures browser trust and prevents MITM attacks.

2. LDAPS Sync with Active Directory

  • LDAPS requires importing the CA certificate and disabling StartTLS.
  • Service accounts and correct Base DN settings are essential for syncing users and groups.

3. SAML Integration for GlobalProtect and Snipe-IT

  • GlobalProtect IdP profile must include Authentik's SSO and SLO URLs.
  • Snipe-IT requires accurate ACS URL and Entity ID mapping.
  • Common pitfalls: clock skew, incorrect metadata, and certificate mismatches.

4. NAT and Security Policies

  • External access to Authentik demands proper NAT and firewall rules.
  • Policies must allow traffic from the untrust zone to the Authentik host.

Troubleshooting Tips

  • Certificate Chain Issues: Verify intermediate and root CA installation.
  • LDAP Connectivity: Test LDAPS with openssl s_client before configuring Authentik.
  • SAML Errors: Check logs for ACS URL mismatches and validate metadata XML.

Best Practices

  • Use implicit consent flows for SAML apps.
  • Regularly monitor authentication logs for anomalies.
  • Document all configuration steps for reproducibility.

Conclusion

This lab reinforced the importance of secure identity management and highlighted practical challenges in integrating multiple services with a new IdP. Mastering these steps prepares you for real-world IAM migrations.