---
title: Manage OPC UA Authentication
slug: litmusedge-v1/product-features/opc-ua-server/management/manage-opc-ua-authentication
description: Learn how to manage OPC UA authentication. 
docTags: 
createdAt: 2022-09-26T16:07:07.000Z
---

You can configure authentication options for the OPC UA server by navigating to **OPC **>** Management**.

OPC UA server supports the following identity tokens for authentication:

- **Anonymous**: The server does not have user information and cannot identify them.
- **Certificate**: The server can identify users by security certificates generated by hash algorithms.
- **Password**: The server can identify users by their password.

You can enable multiple identity types and choose authentication options for them.

:::hint{type="warning"}
**Important**: 

- Choosing security policies for identity tokens ensures that the server encrypts authentication messages.
- Selections in the *Authentication Management *section must match the selections in the *Policies *section or the server will not start.
:::

# Select Security Policies

**To select security policies:**

1. Navigate to **OPC **> **Management**. 
2. From the *Management panel*, refer to the *Authentication management* section and click the **Enable **toggle next to one or more identity tokens: **Anonymous**, **Certificate**, and **Password**. 

   ![](https://api.archbee.com/api/optimize/SSUUxKZUk9bFTEPNn_6Zo/VHLEPtZRPNX6IUeSX4Jxs_authenticationmanagementoptions.png "The Authentication management section")
3. For each enabled token section, select check boxes for authentication options.
4. [Manage the OPC UA Server](docId\:auzIPeIw63IOIZXLEQ3xe) to learn more.