// REFERENCE
Port 135 (MSRPC)
Protocol: TCP
Service: MSRPC
High risk
Microsoft RPC: the Windows service locator (DCOM, WMI). Together with 139/445 it flags a Windows host. It must never be exposed to the Internet; a classic surface for worms and lateral movement.
Related tools
Work with this in:
Related
111
Port 111 (RPCbind / Portmapper) 137
Port 137 (NetBIOS Name) 138
Port 138 (NetBIOS Datagram) 1883
Port 1883 (MQTT) 2375
Port 2375 (Docker API) 2376
Port 2376 (Docker API TLS)
Port 111 (RPCbind / Portmapper) 137
Port 137 (NetBIOS Name) 138
Port 138 (NetBIOS Datagram) 1883
Port 1883 (MQTT) 2375
Port 2375 (Docker API) 2376
Port 2376 (Docker API TLS)
Assignments per the IANA port registry. Educational content.