Specifies allowed SSL/TLS versions.
This property defines which SSL/TLS versions
are allowed to be used during SSL/TLS session. By default all versions
are allowed. The application can disable undesired versions. It is not
possible to disable SSL3 if TLS1 and SSL2 are both enabled.
Note, to enable several SSL versions use bitwise OR operation, for example ‘sbSSL2 | sbSSL3 | sbTLS1’.