SslProtocols Enum

Definition

Namespace:

System.Security.Authentication

Assembly:

System.Net.Primitives.dll

Defines the possible versions of SslProtocols.

This enumeration supports a bitwise combination of its member values.

public enum class SslProtocols

[System.Flags]
public enum SslProtocols

[<System.Flags>]
type SslProtocols = 

Public Enum SslProtocols

Inheritance

Object

ValueType

Enum

SslProtocols

Attributes

FlagsAttribute

Fields

Name	Value	Description
None	0	Allows the operating system to choose the best protocol to use, and to block protocols that are not secure. Unless your app has a specific reason not to, you should use this field.
Ssl2	12	Specifies the SSL 2.0 protocol. SSL 2.0 has been superseded by the TLS protocol and is provided for backward compatibility only.
Ssl3	48	Specifies the SSL 3.0 protocol. SSL 3.0 has been superseded by the TLS protocol and is provided for backward compatibility only.
Tls	192	Specifies the TLS 1.0 security protocol. TLS 1.0 is provided for backward compatibility only. The TLS protocol is defined in IETF RFC 2246. This member is obsolete starting in .NET 7.
Default	240	Use None instead of Default. Default permits only the Secure Sockets Layer (SSL) 3.0 or Transport Layer Security (TLS) 1.0 protocols to be negotiated, and those options are now considered obsolete. Consequently, Default is not allowed in many organizations. Despite the name of this field, SslStream does not use it as a default except under special circumstances.
Tls11	768	Specifies the TLS 1.1 security protocol. The TLS protocol is defined in IETF RFC 4346. This member is obsolete starting in .NET 7.
Tls12	3072	Specifies the TLS 1.2 security protocol. The TLS protocol is defined in IETF RFC 5246.
Tls13	12288	Specifies the TLS 1.3 security protocol. The TLS protocol is defined in IETF RFC 8446.

Remarks

During the handshake, the client sends a list of SSL versions and the server chooses the best matching version from that list.