Gets and sets the security protocol used to establish the secure
connection with the server.
Syntax
object.SecureProtocol [= protocol ]
Remarks
The SecureProtocol property can be used to specify the
security protocol to be used when establishing a secure connection
with a server. By default, the control will attempt to use TLS 1.2 to
establish the connection. If TLS 1.2 is not supported, TLS 1.0 will be
used. The appropriate protocol is automatically
selected based on the capabilities of both the client and server.
It is recommended that you only change this property value if
you fully understand the implications of doing so. Assigning a value
to this property will override the default and force the control to
attempt to use only the protocol specified. One or more of the
following values may be used:
| Value |
Constant |
Description |
| 0 |
stProtocolNone |
No security protocol has been selected. A secure connection
has not been established. |
| 1 |
stProtocolSSL2 |
The SSL 2.0 protocol has been selected. This protocol
has been deprecated and is no longer widely used. It is not
recommended that this protocol be used when establishing secure
connections. |
| 2 |
stProtocolSSL3 |
The SSL 3.0 protocol has been selected. This protocol has
been deprecated and is no longer widely used. It is not
recommended that this protocol be used when establishing secure
connections. |
| 4 |
stProtocolTLS10 |
The TLS 1.0 protocol has been selected. This version of the
protocol is commonly used by older servers and is the only version
of TLS supported on Windows XP and
Windows Server 2003. |
| 8 |
stProtocolTLS11 |
The TLS 1.1 protocol has been selected. This version of TLS
is supported on Windows 7 and Windows Server 2008 R2
and later versions of the operating system. |
| 16 |
stProtocolTLS12 |
The TLS 1.2 protocol has been selected. This is the default
version of the protocol and is supported on Windows 7 and
Windows Server 2008 R2 and later versions of Windows. It is
recommended that you use this version of TLS. |
Multiple security protocols may be specified by combining them
using a bitwise Or operator. After a connection has been established,
reading this property will identify the protocol that was selected to
establish the connection. Attempting to set this property after a
connection has been established will result in an exception being
thrown. This property should only be set after setting the
Secure property to True and before calling the Connect
method.
Data Type
Integer (Int32)
See Also
CipherStrength Property,
HashStrength Property,
Secure Property,
SecureCipher Property,
SecureHash Property,
SecureKeyExchange Property
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