---
title: NSURLAuthenticationMethodNTLM
framework: foundation
role: symbol
role_heading: Global Variable
path: foundation/nsurlauthenticationmethodntlm
---

# NSURLAuthenticationMethodNTLM

Use NTLM authentication for this protection space.

## Declaration

```swift
let NSURLAuthenticationMethodNTLM: String
```

## See Also

### Session-wide authentication challenges

- [NSURLAuthenticationMethodClientCertificate](foundation/nsurlauthenticationmethodclientcertificate.md)
- [NSURLAuthenticationMethodNegotiate](foundation/nsurlauthenticationmethodnegotiate.md)
- [NSURLAuthenticationMethodServerTrust](foundation/nsurlauthenticationmethodservertrust.md)