Port 139

Modified by:

Port 139 is known as NetBIOS Session Service. It is used for file and printer sharing over a network using the Server Message Block (SMB) protocol. This port is commonly used by Windows operating systems for network communication. However, it can also be used by malware to spread and infect other computers on the network.

Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.

Official

Port
Protocol (TCP/UDP)
Title
Description
Port Type
Port 139
tcp
netbios-ssn
NETBIOS Session Service
WELL KNOWN PORT
Port 139
udp
netbios-ssn
NETBIOS Session Service
WELL KNOWN PORT

UnOfficial

Unofficialy or sometimes with conflict, the same port may be used by different applications.

Port Protocol (TCP/UDP) Description
TCP UDP Ports
Other ports
Port 11967
Ports those registered with IANA are shown as official ports. The same port number
Port 2630
Port 2630 is commonly used for the Netware Core Protocol (NCP) in Novell NetWare
Port 9421
Ports those registered with IANA are shown as official ports. The same port number
Port 36963
Ports those registered with IANA are shown as official ports. The same port number
Port 27000
Port 27000 is commonly used as the default port for license managers, such as
Port 2666
Ports those registered with IANA are shown as official ports. The same port number
Port 1995
Ports those registered with IANA are shown as official ports. The same port number
Port 27500
Port 27500 is commonly used for online multiplayer games, specifically for the Unreal Tournament
Ports 5800 – 5900
Port 5800- Port 5900 Port 5900- Port 6000 Port 6000- Port 6100 Port 6100-
Port 10000
Port 10000 is commonly used for webmin, a web-based system configuration tool. It allows
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