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CPol 2020-09-24 18:58:31 +00:00 committed by gitbook-bot
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@ -6,6 +6,11 @@ MQTT stands for MQ Telemetry Transport. It is a publish/subscribe, extremely sim
**Default port:** 1883
```text
PORT STATE SERVICE REASON
1883/tcp open mosquitto version 1.4.8 syn-ack
```
## Pentesting MQTT
**Authentication is totally optional** and even if authentication is being performed, **encryption is not used by default** \(credentials are sent in clear text\). MITM attacks can still be executed to steal passwords.