Port Probe TCP Port : 445

Microsoft-DS

135,137/UDP, 135(incoming only),139/TCP, 445 MS-DC – NetBIOS - NetBIOS (also known as Server Message Block, LanManager, and Common Internet File System) is a networked file sharing protocol. The Microsoft Windows “Network Neighborhood” runs over NetBIOS. We filter this port to protect customers from inadvertently exposing files on their computers, and also to block worms which spread via open file shares. The latest addition to this series, a consolidated service port (TCP445), has also opened new (yet similar) security risks in Win2K and WinXP.

Port Number Decimal = 445/TCP

Updated On: 04.05.13