Skip to main content

User authentication

Goal​

Enable username/password access to your scripted OPC UA server.

Add a simple user manager​

Add the following userManager block to your server options when you create the OPCUAServer instance:

const server = new opcua.OPCUAServer({
    port: msg.port || 4840,
    nodeset_filename: [opcua.nodesets.standard],
    serverInfo: {
        applicationUri: `urn:${msg.endpoint}`,
        productUri: "MyOPCUAServer",
        applicationName: { text: "MyOPCUAServer", locale: "en-US" },
        isOnline: true
    },
    userManager: {
        isValidUser: (username, password) => {
            return username === "admin" && password === "secret";
        }
    }
});

Notes​

  • You can validate users against a list, a database, or a file.
  • For more advanced authentication (certificates, tokens), see the security page.

Next step​

Continue with security policies and certificates.

Further reading​

For more tips and examples, see the Sterfive book node-opcua by example.