Port 137

Modified by:

Port 137 is primarily used for NetBIOS Name Service, which is a protocol used for name registration and resolution in a Windows-based network. It allows computers to communicate with each other using names instead of IP addresses. Port 137 is also used for server message block (SMB) traffic, which is a protocol used for file sharing, printer sharing, and other types of communication between Windows systems.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 137
tcp
netbios-ns
NETBIOS Name Service
WELL KNOWN PORT
Port 137
udp
netbios-ns
NETBIOS Name Service
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Port 1249
Port 1249 is used for the Remote Procedure Call (RPC) protocol in Windows operating
Port 4663
Port 4663 is used for Google Desktop Search. Ports those registered with IANA are
Port 6767
Port 6767 is used for the BMC Control-M/Enterprise Manager communication protocol. Ports those registered
Port 1171
Ports those registered with IANA are shown as official ports. The same port number
Port 1884
Port 1884 is often used for communication with the MQTT (Message Queuing Telemetry Transport)
Port 8768
Ports those registered with IANA are shown as official ports. The same port number
Port 31457
Ports those registered with IANA are shown as official ports. The same port number
Port 3817
Ports those registered with IANA are shown as official ports. The same port number
Port 3072
Ports those registered with IANA are shown as official ports. The same port number
Port 2103
Port 2103 is commonly used for the Zephyr Notification Service, which is a protocol
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