---
title: NSURLProtectionSpace protocol types
framework: foundation
role: collectionGroup
role_heading: API Collection
path: foundation/nsurlprotectionspace-protocol-types
---

# NSURLProtectionSpace protocol types

These constants describe the supported protocols for a protection space, as returned by protocol.

## Topics

### Protocol types

- [NSURLProtectionSpaceHTTP](foundation/nsurlprotectionspacehttp.md)
- [NSURLProtectionSpaceHTTPS](foundation/nsurlprotectionspacehttps.md)
- [NSURLProtectionSpaceFTP](foundation/nsurlprotectionspaceftp.md)

## See Also

### Identifying protection space properties

- [NSURLProtectionSpace proxy types](foundation/nsurlprotectionspace-proxy-types.md)
- [NSURLProtectionSpace authentication method constants](foundation/nsurlprotectionspace-authentication-method-constants.md)