What is a 445 port used for?
Port 445 is used by newer versions of SMB (after Windows 2000) on top of a TCP stack, allowing SMB to communicate over the Internet. This also means you can use IP addresses in order to use SMB like file sharing. Are open ports dangerous?
Are open ports 139 and 445 dangerous?
While port 139 and 445 aren’t inherently dangerous, there are known issues with exposing these ports to the Internet. You can check if a port is open by using the netstat command. There is a common misconception that an open port is dangerous.
What are ports 449 and 8470 used for?
Port 449 is used to look up service by name and return the port number. Ports 8470 and 9470 (TLS/SSL) are used for host code page translation tables and licensing functions.
What is the difference between SMB port 139 and 445?
SMB ports are generally port numbers 139 and 445. Port 139 is used by SMB dialects that communicate over NetBIOS. It’s a transport layer protocol designed to use in Windows operating systems over a network. Port 445 is used by newer versions of SMB (after Windows 2000) on top of a TCP stack, allowing SMB to communicate over the Internet.
How do I check if a port is open?
You can check if a port is open by using the netstat command. There is a common misconception that an open port is dangerous. This is largely driven by a lack of understanding of how open ports work, why they are open, and which ones shouldn’t be open.
How are serviceservice names and port numbers assigned?
Service names are assigned on a first-come, first-served process, as documented in [RFC6335]. Port numbers are assigned in various ways, based on three ranges: System Ports (0-1023), User Ports (1024-49151), and the Dynamic and/or Private Ports (49152-65535); the difference uses of these ranges is described in [RFC6335].
