namespace System.Net.Security
{
    public sealed class CipherSuitesPolicy
    {
        public CipherSuitesPolicy(IEnumerable<TlsCipherSuite> allowedCipherSuites);
        public IEnumerable<TlsCipherSuite> AllowedCipherSuites { get; }
    }
    public class SslServerAuthenticationOptions
    {
        public CipherSuitesPolicy CipherSuitesPolicy { get; set; }
    }
    public class SslClientAuthenticationOptions
    {
        public CipherSuitesPolicy CipherSuitesPolicy { get; set; }
    }
}