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 More

Related Protocols

A list of related protocols is below. List of all protocols.
Category Name

Networking

DoT Details

Networking

DNS Details

Networking

DHCP Details

Networking

Avast Real Site Details

Networking

SCTP Details

Networking

SSDP Details

Networking

OSPF Details

Networking

Whois Details

Networking

DoH Details

Networking

VRRP Details

Networking

HSRP Details

Networking

DoQ Details

Networking

DHCP IPv6 Details

Networking

Multicast DNS Details

Networking

ICMP - Ping Details

Networking

Tinc Details

Networking

Check Point HA Details

Networking

Link-Local Multicast Details

Networking

IGMP Details

Networking

ICMP - Ping IPv6 Details

Networking

LISP Details

Networking

Anything In Anything Details

Networking

uPnP Details

Networking

EGP Details

Networking

Teredo IPv6 Details

Networking

Network Time Protocol Details

Networking

BGP Details

Integration and Custom Solutions

Do you have any questions about integration, APIs or custom development?

Contact Us