---
title: SSLProtocol.tlsProtocol12
framework: security
role: symbol
role_heading: Case
path: security/sslprotocol/tlsprotocol12
---

# SSLProtocol.tlsProtocol12

Specifies that the TLS 1.2 protocol is preferred but lower versions may be negotiated.

## Declaration

```swift
case tlsProtocol12
```