# Authentication

## Overview

After the SDK is initialized, you need to login to the Pango platform to be able to start VPN. Available login options may depend on the platform setup for your organization.

### Pango Authentication

Pango Auth provides managed user authentication without requiring you to deploy and maintain your own OAuth server.

**Benefits of Pango Auth:**

* No need to deploy or maintain your own authentication server
* Managed user creation and authentication handled by Pango
* Simple token-based integration with the VPN SDK
* Supports access token refresh for seamless user sessions

**Steps to implement Pango Auth:**

1. Obtain your Project ID and API credentials from the Pango Developer Console.
2. Create users via the Pango Auth API (typically done on your backend server).
3. Sign in users to obtain access tokens (can be done client-side with Public API key).
4. Use the access token with the Pango authentication method to login to the VPN SDK.

## Platform

For Apple, see [Authentication](/paas/sdk/unified-vpn-sdk-for-apple/features/authentication.md)

For Android, see [Authentication](/paas/sdk/vpn-sdk-for-android/features/authentication.md)

For Windows, see [Authentication](/paas/sdk/unified-vpn-sdk-for-windows/features/authentication.md)


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