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# SSLAuthenticate

The flags that represent the requirements for client-side authentication.

```
enum SSLAuthenticate
```

## Topics

### Constants

[`SSLAuthenticate.neverAuthenticate`](/documentation/Security/SSLAuthenticate/neverAuthenticate)

Indicates that client-side authentication is not required. (Default.)

[`SSLAuthenticate.alwaysAuthenticate`](/documentation/Security/SSLAuthenticate/alwaysAuthenticate)

Indicates that client-side authentication is required.

[`SSLAuthenticate.tryAuthenticate`](/documentation/Security/SSLAuthenticate/tryAuthenticate)

Indicates that client-side authentication should be attempted. There is no error if the client doesn’t have a certificate.


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