How do I open SMB ports in Windows 10?
- Open Control Panel in your PC/Notebook.
- Click on Programs.
- Click on Turn Windows features on or off link.
- Expand the SMB 1.0/CIFS File Sharing Support option.
- Check the SMB 1.0/CIFS Client option.
- Click the OK button.
Open Control Panel, click System and Security, and then click Windows Firewall. In the left pane, click Advanced settings, and in the console tree, click Inbound Rules. Under Inbound Rules, locate the rules File and Printer Sharing (NB-Session-In) and File and Printer Sharing (SMB-In).
- Open Control Panel.
- Select Programs > Programs and Features > Turn Windows features on or off > SMB 1.0/CIFS File Sharing Support.
- Check SMB 1.0/CIFS Client, and then press Enter.
As such, SMB requires network ports on a computer or server to enable communication to other systems. SMB uses either IP port 139 or 445.
Under Control Panel Home, select Turn Windows features on or off to open the Windows Features box. In the Windows Features box, scroll down the list, clear the check box for SMB 1.0/CIFS File Sharing Support and select OK. After Windows applies the change, on the confirmation page, select Restart now.
Know if Your Port 445 is Enabled or Not
Then type: “netstat –na” and press Enter. “netstat –na” command means scan all connected port and showing in numbers. In one or two seconds, the picture will show up. Roll your mouse to the top and you'll see the IP address of 445.
Go to Computer Configuration > Policies > Windows Settings > Security Settings > Windows Firewall with Advanced Security > Windows Firewall with Advanced Security - LDAP > Inbound Rules. Right-click and choose New Rule. Choose Port and click Next. Choose TCP and at specific local ports enter 135, 445, then click Next.
Select Windows SMB server.
Put your Windows machine's IP address or local hostname into the URL field. Provide the Windows user account login and password. Name the storage and tap Done. After that, the connection with the computer will be established.
Connect to a SMB Share
In the Server Address field, enter smb:// to define the network protocol for SMB, and then enter either the IP address or the hostname of the server. To add the server to your Favorite Servers list, click the '+' button. Click Connect to connect to the share.
- Click Protocols > Windows Sharing (SMB) > SMB Server Settings .
- From the SMB service setting, select Enabled.
- From the Snapshot Directory Settings box, choose the system default or a custom configuration for the following settings: Visible at root. Accessible at root. ...
- Click Save.
Is port 445 open by default?
If the server has NBT enabled, it listens on UDP ports 137 and 138, and TCP ports 139 and 445. If it has NBT disabled, it listens on TCP port 445 only. All four ports are open as default in all versions of Windows, including Windows 10 and Windows Server 2019.
Blocking TCP 445 will prevent file and printer sharing and also other services such as DHCP (dynamic host configuration protocol) which is frequently used for automatically obtaining an IP address from the DHCP servers used by many corporations and ISPs(Internet Service Providers) will stop functioning.
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.
SMB 1.0/CIFS File Sharing Support has been disabled on Windows 10 Windows 10 Fall Creators Update version 1709 and higher.
Server Message Block (SMB) is a networking file share protocol included in Windows 10 that provides the ability to read and write files and perform other service requests to network devices.
- From a system running Windows, open a Command Prompt.
- Type net use \\x.x.x.x\IPC$ * /user:Outpost24 replacing "x.x.x.x" with the IP address of the target system and replacing "Outpost24" with the username you need to test authentication with and press Enter.
Type "Network Utility" in the search field and select Network Utility. Select Port Scan, enter an IP address or hostname in the text field, and specify a port range. Click Scan to begin the test. If a TCP port is open, it will be displayed here.
Port 445 is a traditional Microsoft networking port with tie-ins to the original NetBIOS service found in earlier versions of Windows OSes. Today, port 445 is used by Microsoft Directory Services for Active Directory (AD) and for the Server Message Block (SMB) protocol over TCP/IP.
The Server Message Block protocol (SMB protocol) is a client-server communication protocol used for sharing access to files, printers, serial ports and other resources on a network.
Port 445 is used by Windows for SMB Direct over TCP/IP. According to this answer on Unix & Linux Stack Exchange, the port can't be changed: This can't be done. Windows does not support TCP ports other than 445/139.
What is SMB directly over IP?
While Port 139 is known technically as 'NBT over IP', Port 445 is 'SMB over IP'. SMB stands for 'Server Message Blocks'. Server Message Block in modern language is also known as Common Internet File System.
The SMB port number is TCP 445.
Samba 4.14 and newer uses SMB 2.1 by default. In SMB network communication, the client and server use the maximum SMB protocol version supported by both the client and the server.
If you can connect to the server on port 445 from the same subnet, then the problem is a firewall somewhere. Either the Windows Firewall or a network firewall or router. Additionally, there's already a built-in firewall rule to allow SMB traffic inbound to port 445.
- go to My computer.
- Click add network location.
- Enter x.x.x.x as ip (ofcourse I enter a real public IP)
- Then try to connect.
Connect to a SMB Share
In the Server Address field, enter smb:// to define the network protocol for SMB, and then enter either the IP address or the hostname of the server. To add the server to your Favorite Servers list, click the '+' button. Click Connect to connect to the share.
Select Windows SMB server.
Put your Windows machine's IP address or local hostname into the URL field. Provide the Windows user account login and password. Name the storage and tap Done. After that, the connection with the computer will be established.
- Open an elevated command prompt.
- Type the following command: netsh advfirewall firewall add rule name="TCP Port 6624" dir=in action=allow protocol=TCP localport=6624 . ...
- To delete the rule, execute the command as follows.
