TCP port 139 is SMB over NETBIOS. NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks.

Preventing SMB traffic from lateral connections and Mar 10, 2020 TCP 445 and 139 - TechRepublic Port 139 is a NetBIOS port that is used for file and printer sharing. Make sure file and printer sharing are disabled. Port 445 is for Microsoft Directory Services. How To Open Firewall Ports In Windows 10 | Tom's Hardware Add the protocol (TCP or UDP) and the port number into the next window and click Next. Select Allow the connection in the next window and hit Next. Select the network type as you see fit and click TCP port 139 | Uniquely Toronto

The use of TCP ports 139 and 445 in Windows

TCP port 138 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. TCP is a connection-oriented protocol, it requires handshaking to set up end-to-end communications. Sep 07, 2017 · Because port series from 135 to 139 are most vulnerable therefore administrator can block either whole series or a specific port. Select Inbound Rules and click on New Rule. The select radio button for the port which will create a new rule that controls connections for a TCP or UDP port. Then click on next. Select UDP port to apply the rule on it.

TCP Port 139 These ports need to be open on both the client Rhino workstation and the Zoo 4.0 server. It is possible to open these ports on the Window Firewall using Netsh .

What is NetBIOS? Does Windows need its ports 137 and 138 TCP port 139 (session services) NetBIOS over TCP/IP is specified by RFC 1001 and RFC 1002 . The Netbt.sys driver is a kernel -mode component that supports the TDI interface. What is SMB Port and Port Number? Which Protocol Uses Port TCP port 139 is SMB over NETBIOS. NETBIOS is a transport layer protocol designed to use in Windows operating systems over the network. TCP 445 is SMB over IP. This is a newer version where SMB can be consumed normally over the IP networks.