enum System.Security.Cryptography.X509Certificates.X509VerificationFlags flags:

   def enum
      NoFlag = 0
      IgnoreNotTimeValid = 1
      IgnoreCtlNotTimeValid = 2
      IgnoreNotTimeNested = 4
      IgnoreInvalidBasicConstraints = 8
      AllowUnknownCertificateAuthority = 16
      IgnoreWrongUsage = 32
      IgnoreInvalidName = 64
      IgnoreInvalidPolicy = 128
      IgnoreEndRevocationUnknown = 256
      IgnoreCtlSignerRevocationUnknown = 512
      IgnoreCertificateAuthorityRevocationUnknown = 1024
      IgnoreRootRevocationUnknown = 2048
      AllFlags = 4095.

end enum.
