---
title: Add Duo Two-Factor Authentication to Access Server
canonical: https://openvpn.net/as-docs/v3/duo-2fa/
product: Access Server Docs
---

# Add Duo Two-Factor Authentication to Access Server

Adding Duo 2FA to Access Server provides your business with enhanced security. You’ll provide remote, encrypted connections for users and strengthen authentication by introducing a second factor.

- [Tutorial: Add Duo Two-Factor Authentication to Access Server](https://openvpn.net/as-docs/v3/tutorials/tutorial--duo-post-auth.md)

Access Server also has [built-in TOTP MFA support](https://openvpn.net/as-docs/v3/tutorials/tutorial--turn-on-mfa.md).

---

Prev: [Authentication Extensions](https://openvpn.net/as-docs/v3/authentication-extensions.md)
Next: [LastPass 2FA](https://openvpn.net/as-docs/v3/lastpass-2fa.md)
Index: https://openvpn.net/as-docs/llms.txt