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 678
Port 678 is not a well-known port. It does not have an established use
Port 3191
Port 3191 is often used for communication between IBM Lotus Notes clients and servers.
Port 3091
Ports those registered with IANA are shown as official ports. The same port number
Port 6501
Port 6501 is used for Remote Desktop Protocol (RDP) for VNC (Virtual Network Computing)
Port 8074
Port 8074 is not assigned to any known service or protocol officially. It may
Port 52
Port 52 is generally used for the Internet Datagram Protocol (IDP). It is a
Port 4370
Port 4370 is typically used for communication between a client and server application in
Port 32976
Ports those registered with IANA are shown as official ports. The same port number
Port 8555
Ports those registered with IANA are shown as official ports. The same port number
Port 8013
Ports those registered with IANA are shown as official ports. The same port number
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