There are two common ports you will see in SMBs — Port 139 and Port 445. Here's what they do. Port 139. Port 139 is used by the NetBIOS session service. Prior ...
The Net.TCP Port Sharing Service is a user-mode Windows service that accepts net.tcp:// connections on behalf of the worker processes that connect through it.
Desktop Central would access the network share using the default windows methods which uses ports like 135, 137, 139 and 445 associated to file sharing and SMB.
Yes, modern SMB (especially v2/v3) runs only on TCP port 445. However, Windows clients may also expect the server to be pingable, ie respond to ICMP Echo.
SMB is a network file sharing protocol that requires an open port on a computer or server to communicate with other systems. SMB ports are generally port numbers 139 and 445 .
