Microsoft-DS
Microsoft-DS, operating on port 445, is a critical service for Windows systems, facilitating file sharing and network communication. It is primarily used for SMB (Server Message Block) protocol, which allows applications to read and write to files and request services from server programs in a computer network.
What is Microsoft-DS
Microsoft-DS, which operates on port 445, is a service integral to Windows networking. It is primarily used for the Server Message Block (SMB) protocol, which facilitates file and printer sharing, as well as network communication between computers. This service allows applications to read and write to files and request services from server programs in a computer network.
The SMB protocol has evolved over the years, with SMB2 and SMB3 offering enhanced performance and security features. Microsoft-DS is essential for environments where Windows systems need to share resources and communicate efficiently. It is widely used in corporate networks, enabling seamless integration and resource sharing among Windows-based devices.
Despite its utility, port 445 has been a target for various cyber-attacks, including the infamous WannaCry ransomware attack. As such, it is crucial for network administrators to secure this port and ensure that only authorized traffic is allowed. Proper firewall configurations and regular security updates are essential to mitigate the risks associated with this service.
Microsoft-DS runs on TCP and UDP port 445 and is official IANA port.Security risk
Leaving port 445 open can expose the network to significant security risks, including unauthorized access and malware attacks. The port has been exploited in various high-profile cyber-attacks, making it a prime target for hackers. It is essential to secure this port with proper firewall rules and ensure that only trusted devices can communicate through it.
In our UFW tutorial you can follow instructions how you can configure UFW to close port 445. Use StackChanges to monitor if the Microsoft-DS port is closed and stays closed. StackChanges will send an alert if port 445 is open again.