NatTypeTester

Channel | Status -|- CI | Stun.Net |

RFC

Internet Protocol

IPv4
IPv6

Transmission Protocol

UDP
TCP
TLS-over-TCP
DTLS-over-UDP

RFC3489

![](docs/img/RFC3489.png)

RFC5389

Binding Test

Checking for UDP Connectivity with the STUN Server

![](docs/img/RFC5780_4.2.png)

Mapping Behavior

Determining NAT Mapping Behavior

![](docs/img/RFC5780_4.3.png)

Filtering Behavior

Determining NAT Filtering Behavior

![](docs/img/RFC5780_4.4.png)

Combining Tests

![](docs/img/RFC5780_4.5.png)