NetBIOS Session Service

What Does NetBIOS Session Service Mean?

NetBIOS session service (NBSS) is a method to connect two computers for transmitting large messages or heavy data traffic. Because the NetBIOS session service is involved in traffic generation and forwarding, TCP port 139 is used. The NetBIOS session service is mostly used for printer and file services over a network.

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Techopedia Explains NetBIOS Session Service

A system with NBSS implementation has the following characteristics:

  • Error Recovery: Applications are allowed to manage the networks and provide error detection and recovery features.
  • OSI Reference Model Services: Both the transport and session services of the open systems interconnection (OSI) reference model are very close to those used by NetBIOS. However, NetBIOS does not follow the OSI Model format and pattern for transmitting messages.
  • NBSS Naming: Names for NBSS are 16 bytes long with some specific restraints for byte values.
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Margaret Rouse

Margaret Rouse is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical, business audience. Over the past twenty years her explanations have appeared on TechTarget websites and she's been cited as an authority in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine and Discovery Magazine.Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages. If you have a suggestion for a new definition or how to improve a technical explanation, please email Margaret or contact her…