// REFERENCE
Port 1883 (MQTT)
Protocol: TCP
Service: MQTT
High risk
MQTT: lightweight IoT messaging. Unencrypted on 1883 (TLS version is 8883) and often without authentication: an open broker leaks and lets you control devices. Use TLS and credentials.
Related tools
Work with this in:
Related
111
Port 111 (RPCbind / Portmapper) 135
Port 135 (MSRPC) 137
Port 137 (NetBIOS Name) 138
Port 138 (NetBIOS Datagram) 2375
Port 2375 (Docker API) 2376
Port 2376 (Docker API TLS)
Port 111 (RPCbind / Portmapper) 135
Port 135 (MSRPC) 137
Port 137 (NetBIOS Name) 138
Port 138 (NetBIOS Datagram) 2375
Port 2375 (Docker API) 2376
Port 2376 (Docker API TLS)
Assignments per the IANA port registry. Educational content.