May 15, 2019 · One central task for the SMB (Server Message Block) protocol is file sharing. In Windows NT it ran on top of NBT (NetBIOS over TCP/IP), which used the famous ports UDP 137 and 138, and TCP 139. With Windows 2000, Microsoft added the option to run SMB directly over TCP/IP, without the extra NBT layer. That's what TCP port 445 is used for.

Jul 16, 2004 Firewalling Samba Interestingly, they describe direct hosted SMB as operating over TCP and UDP port 445. So, in order to block the bulk of file and print sharing traffic, we need to block TCP ports 139 and 445. Samba UDP Ports Finding and Fixing Vulnerabilities in SMB Listens on Port SMB Listens on Port; Test ID: 1782: Risk: Medium: Category: SMB/NetBIOS: Type: Attack: Summary: Ports 139 and 445 are used for ‘NetBIOS’ communication between two Windows 2000 hosts. In the case of port 445 an attacker may use this to perform NetBIOS attacks as it would on port 139. Impact: Solution: All NetBIOS attacks are possible on this

Jan 17, 2020

Jul 28, 2017 Metasploit SMB – Exploitation of Port 445 | MACHN1k Oct 29, 2012

Metasploit SMB – Exploitation of Port 445 | MACHN1k

May 15, 2019 · One central task for the SMB (Server Message Block) protocol is file sharing. In Windows NT it ran on top of NBT (NetBIOS over TCP/IP), which used the famous ports UDP 137 and 138, and TCP 139. With Windows 2000, Microsoft added the option to run SMB directly over TCP/IP, without the extra NBT layer. That's what TCP port 445 is used for. May 18, 2017 · Hi Folks, Today we will see how to Block SMB ports (139.445) at Firewall level in order to prevent from Wanncary Ransomware Malware. To blcoking this ports will help you to protect from Wannacry Mar 10, 2020 · Server Message Block (SMB) is a network file sharing and data fabric protocol. SMB is used by billions of devices in a diverse set of operating systems, including Windows, MacOS, iOS , Linux, and Android. Clients use SMB to access data on servers. Jul 13, 2020 · Port 139 is used for Network Basic Input Output System (NetBIOS) name resolution and port 445 is used for Server Message Blocks (SMB). They all serve Windows File and Printer Sharing. In Windows 2000, Microsoft has created a new transport for SMB over TCP and UDP on port 445, which replaces the older implementation that was over ports 137, 138 Since Windows 2000, SMB runs, by default, with a thin layer, similar to the Session Message packet of NBT's Session Service, on top of TCP, using TCP port 445 rather than TCP port 139—a feature known as "direct host SMB". Windows Server 2003, and older NAS devices use SMB1/CIFS natively. SMB1/CIFS is an extremely chatty protocol, in that it If I want to allow Windows networked drives between two firewalled computers, do I need to open ports 137-139, or is port 445 sufficient? I have to submit a form and get approval to open firewall ports, and I don't want to ask for more open ports than I need. All of the machines here are Windows XP or later. Server Message Block (SMB) is the transport protocol used by Windows machines for a wide variety of purposes such as file sharing, printer sharing, and access to remote Windows services. SMB operates over TCP ports 139 and 445.