Windows Networking
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
Introduced
Version 2.88
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
Do you know how much Windows Networking traffic flows through your network? Netify's protocol detection engine and reporting provides insights to help manage your network.
What gets measured, gets managed.
Learn MoreNetify Resources
Integration and Custom Solutions
Do you have any questions about integration, APIs or custom development?
Contact Us