# Authentication and Authorization

## Feature

Use authentication to connect with SOLR server

## How to

1. You need activate this feature in SOLR server, to do this, follow steps in [**SOLR wiki**](https://cwiki.apache.org/confluence/display/solr/Authentication+and+Authorization+Plugins)
2. Change your **SolrExpressOptions** and set **SecurityOptions**

```csharp
    services
        .AddSolrExpress<TechProduct>(builder => builder
            .UseOptions(options =>
            {
                // ... Other settings
                options.Security = new SecurityOptions
                {
                    AuthenticationType = AuthenticationType.Basic,
                    Password = "<YOUR PASSWORD>",
                    UserName = "<YOUR USER NAME>"
                }
            })
            // ...  Other settings
            );
```