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 |