The set of SSL and TLS protocols to be supported.
The following values are defined:
other(1) : An unspecified protocol,
SSL 3.0(2) : Support SSL 3.0 protocol only,
TLS 1.0(3) : Support TLS 1.0 protocol only,
ssl3AndTls1(3) : Support both SSL 3.0 and TLS 1.0