---
title: SSLProtocol.tlsProtocol11
framework: security
role: symbol
role_heading: Case
path: security/sslprotocol/tlsprotocol11
---

# SSLProtocol.tlsProtocol11

Specifies that the TLS 1.1 protocol is preferred but lower versions may be negotiated.

## Declaration

```swift
case tlsProtocol11
```