NetBIOS
NetBIOS (Network Basic Input/Output System) is a
program that allows applications on different computers to communicate within a
local area network (LAN). It was created by IBM for its early PC Network, was
adopted by Microsoft, and has since become a de facto industry standard.
NetBEUI is an enhanced version of the NetBios protocol
that is used by Microsoft Windows networking. It is a non-routable protocol,
which means that computers that are not located on the same network segment or
subnet can't communicate
NetBIOS
over TCP/IP (NBT, or sometimes NetBT) is a networking protocol that allows legacy computer
applications relying on the NetBIOS API to be used on
modern TCP/IPnetworks. It is a routable protocol, which means that
computers that are located on the different network segment or subnet can
communicate.
NetBT uses
the following TCP and UDP ports:
·
UDP port 137 and TCP port 137 (name
services)
·
UDP port 138 - connectionless (datagram services)
·
TCP port 139 - connection oriented
(session services)
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