Problem description:

What is the NetBios-SSN[ 139] port? What's the use?

I often hear many people say that Hong Kong is closed. Why? What's the use after it's closed? (Experts who know should be more specific ...) O

Analysis:

Port 139: Port 139 is a NetBIOS session port for file and print enjoyment. Note that the unix machine running samba has also opened the port 139, which has the same function. The way to turn off 139 listening is to select the Inter Protocol (TCP/IP) attribute in the local connection in the network and dial-up connection, enter the advanced TCP/IP settings and WINS settings, one of which is "Disable NETBIOS of TCP/IP", and then tick off the 139 port.