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NegotiateStream.AuthenticateAsServer Method

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Definition

Namespace:
System.Net.Security
Assembly:
System.Net.Security.dll
Assembly:
System.dll
Assembly:
netstandard.dll

Handles the server side of an authentication for a client-server connection.

Overloads

AuthenticateAsServer(NetworkCredential, ExtendedProtectionPolicy, ProtectionLevel, TokenImpersonationLevel)

Called by servers to authenticate the client, and optionally the server, in a client-server connection. The authentication process uses the specified server credentials, authentication options, and extended protection policy.
AuthenticateAsServer(NetworkCredential, ProtectionLevel, TokenImpersonationLevel)

Called by servers to authenticate the client, and optionally the server, in a client-server connection. The authentication process uses the specified server credentials and authentication options.
AuthenticateAsServer()

Called by servers to authenticate the client, and optionally the server, in a client-server connection.
AuthenticateAsServer(ExtendedProtectionPolicy)

Called by servers to authenticate the client, and optionally the server, in a client-server connection. The authentication process uses the specified extended protection policy.

Remarks

These methods block while the authentication is in progress. To prevent the application from blocking while waiting for the authentication to complete, use the BeginAuthenticateAsServer method.

AuthenticateAsServer(NetworkCredential, ExtendedProtectionPolicy, ProtectionLevel, TokenImpersonationLevel)

Source:
NegotiateStream.cs
Source:
NegotiateStream.cs
Source:
NegotiateStream.cs

Called by servers to authenticate the client, and optionally the server, in a client-server connection. The authentication process uses the specified server credentials, authentication options, and extended protection policy.

public:
 virtual void AuthenticateAsServer(System::Net::NetworkCredential ^ credential, System::Security::Authentication::ExtendedProtection::ExtendedProtectionPolicy ^ policy, System::Net::Security::ProtectionLevel requiredProtectionLevel, System::Security::Principal::TokenImpersonationLevel requiredImpersonationLevel);
public virtual void AuthenticateAsServer (System.Net.NetworkCredential credential, System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy? policy, System.Net.Security.ProtectionLevel requiredProtectionLevel, System.Security.Principal.TokenImpersonationLevel requiredImpersonationLevel);
public virtual void AuthenticateAsServer (System.Net.NetworkCredential credential, System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy policy, System.Net.Security.ProtectionLevel requiredProtectionLevel, System.Security.Principal.TokenImpersonationLevel requiredImpersonationLevel);
abstract member AuthenticateAsServer : System.Net.NetworkCredential * System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy * System.Net.Security.ProtectionLevel * System.Security.Principal.TokenImpersonationLevel -> unit
override this.AuthenticateAsServer : System.Net.NetworkCredential * System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy * System.Net.Security.ProtectionLevel * System.Security.Principal.TokenImpersonationLevel -> unit
Public Overridable Sub AuthenticateAsServer (credential As NetworkCredential, policy As ExtendedProtectionPolicy, requiredProtectionLevel As ProtectionLevel, requiredImpersonationLevel As TokenImpersonationLevel)

Parameters

credential
NetworkCredential

The NetworkCredential that is used to establish the identity of the client.

policy
ExtendedProtectionPolicy

The ExtendedProtectionPolicy that is used for extended protection.

requiredProtectionLevel
ProtectionLevel

One of the ProtectionLevel values, indicating the security services for the stream.

requiredImpersonationLevel
TokenImpersonationLevel

One of the TokenImpersonationLevel values, indicating how the server can use the client's credentials to access resources.

Exceptions

ArgumentException

The CustomChannelBinding and CustomServiceNames on the extended protection policy passed in the policy parameter are both null.

ArgumentNullException

credential is null.

ArgumentOutOfRangeException

requiredImpersonationLevel must be Identification, Impersonation, or Delegation,

AuthenticationException

The authentication failed. You can use this object to try to r-authenticate.

InvalidCredentialException

The authentication failed. You can use this object to retry the authentication.

InvalidOperationException

Authentication has already occurred.

-or-

This stream was used previously to attempt authentication as the client. You cannot use the stream to retry authentication as the server.

ObjectDisposedException

This object has been closed.

PlatformNotSupportedException

The policy parameter was set to Always on a platform that does not support extended protection.

NotSupportedException

Windows 95 and Windows 98 are not supported.

Remarks

If the policy parameter is null, then an extended protection policy is used that has PolicyEnforcement set to Never.

When authentication succeeds, you must check the IsEncrypted and IsSigned properties to determine what security services are used by the NegotiateStream. Check the IsMutuallyAuthenticated property to determine whether mutual authentication occurred.

This method blocks until the operation completes. To prevent blocking until the operation completes, use one of the BeginAuthenticateAsServer method overloads.

If the authentication fails, you receive an AuthenticationException or an InvalidCredentialException. In this case, you can retry the authentication with a different credential.

See also

Applies to

AuthenticateAsServer(NetworkCredential, ProtectionLevel, TokenImpersonationLevel)

Source:
NegotiateStream.cs
Source:
NegotiateStream.cs
Source:
NegotiateStream.cs

Called by servers to authenticate the client, and optionally the server, in a client-server connection. The authentication process uses the specified server credentials and authentication options.

public:
 virtual void AuthenticateAsServer(System::Net::NetworkCredential ^ credential, System::Net::Security::ProtectionLevel requiredProtectionLevel, System::Security::Principal::TokenImpersonationLevel requiredImpersonationLevel);
public virtual void AuthenticateAsServer (System.Net.NetworkCredential credential, System.Net.Security.ProtectionLevel requiredProtectionLevel, System.Security.Principal.TokenImpersonationLevel requiredImpersonationLevel);
abstract member AuthenticateAsServer : System.Net.NetworkCredential * System.Net.Security.ProtectionLevel * System.Security.Principal.TokenImpersonationLevel -> unit
override this.AuthenticateAsServer : System.Net.NetworkCredential * System.Net.Security.ProtectionLevel * System.Security.Principal.TokenImpersonationLevel -> unit
Public Overridable Sub AuthenticateAsServer (credential As NetworkCredential, requiredProtectionLevel As ProtectionLevel, requiredImpersonationLevel As TokenImpersonationLevel)

Parameters

credential
NetworkCredential

The NetworkCredential that is used to establish the identity of the server.

requiredProtectionLevel
ProtectionLevel

One of the ProtectionLevel values, indicating the security services for the stream.

requiredImpersonationLevel
TokenImpersonationLevel

One of the TokenImpersonationLevel values, indicating how the server can use the client's credentials to access resources.

Exceptions

ArgumentNullException

credential is null.

ArgumentOutOfRangeException

requiredImpersonationLevel must be Identification, Impersonation, or Delegation,

AuthenticationException

The authentication failed. You can use this object to try to r-authenticate.

InvalidCredentialException

The authentication failed. You can use this object to retry the authentication.

ObjectDisposedException

This object has been closed.

InvalidOperationException

Authentication has already occurred.

-or-

This stream was used previously to attempt authentication as the client. You cannot use the stream to retry authentication as the server.

NotSupportedException

Windows 95 and Windows 98 are not supported.

Remarks

When authentication succeeds, you must check the IsEncrypted and IsSigned properties to determine what security services are used by the NegotiateStream. Check the IsMutuallyAuthenticated property to determine whether mutual authentication occurred.

This method blocks until the operation completes. To prevent blocking until the operation completes, use one of the BeginAuthenticateAsServer method overloads.

If the authentication fails, you receive an AuthenticationException or an InvalidCredentialException. In this case, you can retry the authentication with a different credential.

Applies to

AuthenticateAsServer()

Source:
NegotiateStream.cs
Source:
NegotiateStream.cs
Source:
NegotiateStream.cs

Called by servers to authenticate the client, and optionally the server, in a client-server connection.

public:
 virtual void AuthenticateAsServer();
public virtual void AuthenticateAsServer ();
abstract member AuthenticateAsServer : unit -> unit
override this.AuthenticateAsServer : unit -> unit
Public Overridable Sub AuthenticateAsServer ()

Exceptions

AuthenticationException

The authentication failed. You can use this object to retry the authentication.

InvalidCredentialException

The authentication failed. You can use this object to retry the authentication.

ObjectDisposedException

This object has been closed.

NotSupportedException

Windows 95 and Windows 98 are not supported.

Remarks

The authentication uses the server's DefaultCredentials. No Service Principal Name (SPN) is specified for the server. The impersonation level is Identification, and the security level is EncryptAndSign.

When authentication succeeds, you must check the IsEncrypted and IsSigned properties to determine what security services are used by the NegotiateStream. Check the IsMutuallyAuthenticated property to determine whether mutual authentication occurred.

This method blocks until the operation completes. To prevent blocking until the operation completes, use one of the BeginAuthenticateAsServer method overloads.

If the authentication fails, you receive an AuthenticationException or an InvalidCredentialException. In this case, you can retry the authentication with a different credential.

Applies to

AuthenticateAsServer(ExtendedProtectionPolicy)

Source:
NegotiateStream.cs
Source:
NegotiateStream.cs
Source:
NegotiateStream.cs

Called by servers to authenticate the client, and optionally the server, in a client-server connection. The authentication process uses the specified extended protection policy.

public:
 virtual void AuthenticateAsServer(System::Security::Authentication::ExtendedProtection::ExtendedProtectionPolicy ^ policy);
public virtual void AuthenticateAsServer (System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy? policy);
public virtual void AuthenticateAsServer (System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy policy);
abstract member AuthenticateAsServer : System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy -> unit
override this.AuthenticateAsServer : System.Security.Authentication.ExtendedProtection.ExtendedProtectionPolicy -> unit
Public Overridable Sub AuthenticateAsServer (policy As ExtendedProtectionPolicy)

Parameters

policy
ExtendedProtectionPolicy

The ExtendedProtectionPolicy that is used for extended protection.

Exceptions

ArgumentException

The CustomChannelBinding and CustomServiceNames on the extended protection policy passed in the policy parameter are both null.

AuthenticationException

The authentication failed. You can use this object to retry the authentication.

InvalidCredentialException

The authentication failed. You can use this object to retry the authentication.

ObjectDisposedException

This object has been closed.

PlatformNotSupportedException

The policy parameter was set to Always on a platform that does not support extended protection.

NotSupportedException

Windows 95 and Windows 98 are not supported.

Remarks

The authentication uses the server's DefaultCredentials. No Service Principal Name (SPN) is specified for the server. The impersonation level is Identification, and the security level is EncryptAndSign.

If the policy parameter is null, then an extended protection policy is used that has PolicyEnforcement set to Never.

When authentication succeeds, you must check the IsEncrypted and IsSigned properties to determine what security services are used by the NegotiateStream. Check the IsMutuallyAuthenticated property to determine whether mutual authentication occurred.

This method blocks until the operation completes. To prevent blocking until the operation completes, use one of the BeginAuthenticateAsServer method overloads.

If the authentication fails, you receive an AuthenticationException or an InvalidCredentialException. In this case, you can retry the authentication with a different credential.

See also

Applies to