---
title: kCFStreamSocketSecurityLevelNone
framework: corefoundation
role: symbol
role_heading: Global Variable
path: corefoundation/kcfstreamsocketsecuritylevelnone
---

# kCFStreamSocketSecurityLevelNone

Specifies that no security level be set.

## Declaration

```swift
let kCFStreamSocketSecurityLevelNone: CFString
```

## See Also

### Constants

- [kCFStreamSocketSecurityLevelSSLv2](corefoundation/kcfstreamsocketsecuritylevelsslv2.md)
- [kCFStreamSocketSecurityLevelSSLv3](corefoundation/kcfstreamsocketsecuritylevelsslv3.md)
- [kCFStreamSocketSecurityLevelTLSv1](corefoundation/kcfstreamsocketsecurityleveltlsv1.md)
- [kCFStreamSocketSecurityLevelNegotiatedSSL](corefoundation/kcfstreamsocketsecuritylevelnegotiatedssl.md)