Windows Networking Protocol

Detection Information

The following page provides information on the Windows Networking Protocol.

Protocol Description

NetBIOS over TCP/IP is a naming service and session handler used by Windows networks. The protocol allows for computers on a small local network to communicate with each other.

Full Name

NetBIOS over TCP

Abbreviation

NBT

Port Statistics

IP Protocol Flow Percent
UDP 137 99%
UDP 138 < 1%
TCP 139 < 1%

Port Reference - RFC

  • TCP 137 - NETBIOS Name Service
  • UDP 137 - NETBIOS Name Service
  • UDP 138 - NETBIOS Datagram Service
  • UDP 139 - NETBIOS Session Service

Category

Networking

External Resources


Protocol Detection

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