Mounting your Nikhef home directory using SSH
when Windows File Sharing is enabled

Introduction

• Windows Vista.
• Windows 7.
• Windows 8.
• Windows 10.

• Administrator access to the local computer.
• PuTTY v0.58+, which is an excellent and free implementation of SSH for Windows. It is assumed that you are familiar with the PuTTY user interface.
• One real or virtual network adapter with the following properties:
  • Bound to the Client for Microsoft Networks.
  • with TCP/IP property NetBIOS over TCP/IP enabled.
  Normally you should already have such an adapter, as otherwise you would not be able to mount any Windows shares.
• One real or virtual network adapter with the following properties:
  • NOT bound to the Client for Microsoft Networks.
  • NOT bound to the File and Printer Sharing for Microsoft Networks.
  • with TCP/IP property NetBIOS over TCP/IP disabled.
  (Don't worry, step-by-step instructions on how to achieve this are below...)

1. As most people do not have a spare real network adapter in their computer, we will add an extra virtual network adapter by installing the Microsoft Loopback Adapter.
2. After that, the network adapter must be properly configured.
3. Then we set up a special PuTTY session with the right port-forwarding.
4. Finally, we start PuTTY and mount our Nikhef home directory.

Installing the Loopback Adapter

• Go to Start->Settings->Control Panel->Add Hardware. The Hardware Wizard will come up:
  
• Click Next, after which the Hardware Wizard will attempt to find new devices. After a while, this screen will come up:
  
• Select Yes, then click Next, after which you'll see a new screen:
  
  Scroll down in the list of Installed Hardware to the entry Add a new hardware device and select it, then click Next.
• A new screen will come up:
  
  Select Install the hardware that I manually select from a list and click Next.
• Now you'll see:
  
  Scroll down in the list to the entry Network adapters, select it and then click Next.
• In the next screen
  
  first select Microsoft from the list of Manufacturers and then select Microsoft Loopback Adapter from the list of Network Adapters. Finally, click Next once more.
• Almost finished:
  
  This is your last chance to abort, otherwise, click Next.
• After a while you should see:
  
  Click Finish to exit the Hardware Wizard.

Configuring the Loopback Adapter

• Right-click on the 'Network Neighborhood' or 'My Network Places' icon on your desktop.
  
  
• Select Properties, after which a new window will appear.
• Choose the loopback adapter (check the column Device name to select the appropriate adapter) and right-click on it.
• Again, choose Properties, after which a new window will appear
  
  Make sure that
  • the entry Client for Microsoft Networks is NOT enabled, i.e. does not have a checkmark in front of it.
  • the entry File and Printer sharing for Microsoft Networks is NOT enabled, i.e. does not have a checkmark in front of it.
  • the entry Internet Protocol (TCP/IP) is enabled.
• Select the entry Internet Protocol (TCP/IP), then click on Properties.
• A new window will appear:
  
  Select Use the following IP address and fill in the 'IP address' and 'Subnet mask' as above.
  It is not necessary to fill in the 'Default gateway' or a 'DNS server'.
• Click on Advanced to make the following window appear:
  
  Deselect Automatic metric and fill in the value of 9999 as the 'Interface metric' as shown above.
• Click on the WINS tab:
  
  and select Disable NetBIOS over TCP/IP.
• Click on OK.
• You are now back in the main 'TCP/IP Properties' screen. Click OK again.
• You are now back in the main 'Loopback Properties' screen. Click Close.

Configuring PuTTY

• Start PuTTY and create a new session or load your existing session for logging in on login.nikhef.nl. Choose host login.nikhef.nl and protocol SSH.
• Expand the Connection->SSH menu option in the Category tree-list and select Tunnels.
• Add a new forwarded port:
  
  
  • For the Source port, fill in the IP address of your loopback adapter, plus the port 139. The entry field might seem to small for it, but it will work. If you have configured your loopback adapter exactly as in the previous section, then fill in
    10.255.255.1:139.
  • For the Destination, fill in beuk.nikhef.nl:139.
  • Click on Add.
• You should now see:
  
• In the Category tree-list on the left, scroll back up and choose Session again. Save your session.

Putting it all together

• Start your newly created Nikhef-PuTTY session and login on login.nikhef.nl as normal.
• Make sure port-forwarding is working properly by checking the PuTTY event log. Select the Window menu of the PuTTY screen (top left) and select Event log. You should see a log similar to:
  
  If not, then check your PuTTY session options first.
• Go to Start->Run and type \\10.255.255.1\user\<Your-nikhef-userid>
• You will be prompted to authenticate yourself:
  
  For the Username, fill in the domain NIKHEF\ followed by your Nikhef-Windows userid.
  For the Password, fill in your Nikhef-Windows password, which might be different from the password you use to log in on login.nikhef.nl and press OK.
• You should now see your Nikhef home directory in Windows Explorer!

Mapping a network drive

• Start Windows Explorer and choose Tools->Map Network Drive.
• In the next screen, fill in:
  
  • Choose an available drive letter.
  • Do NOT click on Browse but type in as the Folder name: \\10.255.255.1\user\<Your-nikhef-userid>
  • Do NOT click on Finish, click on Different user name.
• In the next screen, fill in your Nikhef-Windows userid:
  
  For the User name, fill in the domain NIKHEF\ followed by your Nikhef-Windows userid.
  For the Password, fill in your Nikhef-Windows password, which might be different from the password you use to log in on login.nikhef.nl and press OK.
• Click on Finish to complete the network drive mapping.
• You should now see a new drive letter appear in the Folders tree-list in Windows Explorer. Click on it to verify that you are indeed viewing your Nikhef home directory.