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Possibility of NATS Communications

*Table.1 Both side host is connected by NATS or NAPT*
NATS Support |
Possibility |

SRC Host |
SRC NATS-R |
DST NATS-R |
DST Host |

Non | Non |
Non | Non | IM-Possible |

Non | Non |
Non | YES | IM-Possible |

Non | Non |
YES | Non | IM-Possible |

Non | Non |
YES | YES | IM-Possible |

Non | YES |
Non | Non | IM-Possible |

Non | YES |
Non | YES | IM-Possible |

Non | YES |
YES | Non | POSSIBLE |

Non | YES |
YES | YES | POSSIBLE |

YES | Non |
Non | Non | IM-Possible |

YES | Non |
Non | YES | IM-Possible |

YES | Non |
YES | Non | IM-Possible |

YES | Non |
YES | YES | IM-Possible |

YES | YES |
Non | Non | IM-Possible |

YES | YES |
Non | YES | POSSIBLE |

YES | YES |
YES | Non | POSSIBLE |

YES | YES |
YES | YES | POSSIBLE |

*Table.2 Source side is connected by NATS/NAPT
*
NATS Support |
Possibility |

SRC Host |
SRC NATS-R |
DST Host |

Non | Non |
Non | POSSIBLE(*1) |

Non | Non |
YES | POSSIBLE(*1) |

Non | YES |
Non | POSSIBLE(*1) |

Non | YES |
YES | POSSIBLE(*1) |

YES | Non |
Non | POSSIBLE(*1) |

YES | Non |
YES | POSSIBLE(*1) |

YES | YES |
Non | POSSIBLE(*1) |

YES | YES |
YES | POSSIBLE(*1) |

(*1)This behavior is normal NAPT.
*
*

*Table.3 Destination side is connected by NATS/NAPT
*
NATS Support |
Possibility |

SRC Host |
DST NATS-R |
DST Host |

Non | Non |
Non | IM-Possible |

Non | Non |
YES | IM-Possible |

Non | YES |
Non | IM-Possible |

Non | YES |
YES | IM-Possible |

YES | Non |
Non | IM-Possible |

YES | Non |
YES | IM-Possible |

YES | YES |
Non | POSSIBLE |

YES | YES |
YES | POSSIBLE |

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