---
title: tlsMinimumSupportedProtocolVersion
framework: foundation
role: symbol
role_heading: Instance Property
path: foundation/urlsessionconfiguration/tlsminimumsupportedprotocolversion
---

# tlsMinimumSupportedProtocolVersion

The minimum TLS protocol version that the client should accept when making connections in this session.

## Declaration

```swift
var tlsMinimumSupportedProtocolVersion: tls_protocol_version_t { get set }
```

## See Also

### Setting security policies

- [tlsMaximumSupportedProtocolVersion](foundation/urlsessionconfiguration/tlsmaximumsupportedprotocolversion.md)
- [urlCredentialStorage](foundation/urlsessionconfiguration/urlcredentialstorage.md)
- [tlsMinimumSupportedProtocol](foundation/urlsessionconfiguration/tlsminimumsupportedprotocol.md)
- [tlsMaximumSupportedProtocol](foundation/urlsessionconfiguration/tlsmaximumsupportedprotocol.md)
- [requiresDNSSECValidation](foundation/urlsessionconfiguration/requiresdnssecvalidation.md)