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Table of Contents

VirtualBox Networking

The easiest way to ssh into a VirtualBox VM is to use a host-only network interface, as we suggest.

To allow network access in the VM, execute: 

 sudo dhclient eth1

which grabs an IP address. If eth1 is a host-only network interface, you are all set and should be able to ssh to eth1's IP address from your host.

Otherwise, you can change the default, NAT interface as shown below and execute sudo dhclient eth0.

In order to log in via a NAT interface, we need to set up port forwarding. This may also enable users on your LAN to log in to the VM, which you may or may not want.

OS X / Linux Users Run the VBoxManage commands below from a local terminal (not the VM window).

Windows Users If you are using Windows Vista, first close Virtual box, to ensure that config files aren't locked. Then open a command line prompt, by click on 'Start', then 'Run', then typing 'cmd' and hitting enter. In the terminal that appears, change to the VirtualBox directory: 

 cd "C:\Program Files\Sun\xVM VirtualBox"

All OSes: From a terminal on your local machine (NOT the VM/VirtualBox), run: 

 VBoxManage setextradata OpenFlowTutorial "VBoxInternal/Devices/pcnet/0/LUN#0/Config/ssh/HostPort" 2222
 VBoxManage setextradata OpenFlowTutorial "VBoxInternal/Devices/pcnet/0/LUN#0/Config/ssh/GuestPort" 22
 VBoxManage setextradata OpenFlowTutorial "VBoxInternal/Devices/pcnet/0/LUN#0/Config/ssh/Protocol" TCP

Verify the settings: 

 VBoxManage getextradata OpenFlowTutorial enumerate

The three values you added above should be shown.

Save your network settings for future reboots, by powering down the VM, from the VM window: 

 sudo poweroff

Restart the OpenFlowTutorial VM once again, by clicking 'Start' at the top of VirtualBox. Login again with the correct user name and password.

Windows Users You may need to change the VM configuration. Edit /etc/network/interfaces. Check that it says: 

 allow hot-plug eth1
 iface eth1 inet dhcp

If it says eth0, change it to eth1; note that to write the file you'll need to use sudo. If you changed the interfaces file, poweroff the machine (sudo poweroff) and then start it again.

VirtualBox SSH Connections

Mac OS X and Linux

To SSH from the local machine to the VM, on the local machine run: 

 ssh -Y -l [[onstutorial#Download-Files|<user name>]] -p 2222 localhost

with the correct user name and password. Test the X11 forwarding by running on the local machine: 

 xterm

and a new terminal window should appear. If you have succeeded, you are done with the basic setup. Close the xterm.

Windows XP

Start Xming; nothing exciting will happen but it will show an icon on the right of the toolbar.

Open a terminal: click 'Start', 'run', then enter 'cmd'.

Change to the directory where you saved putty. 

 cd <dir>

Run: 

 putty.exe -X -P 2222 -l <user name> localhost

A new window will pop up; type in the password. Now, type: 

 xterm

A white terminal window should appear. If you have succeeded, you are done with the basic setup. Close the xterm.

Make sure you use the correct user name and password for your VM image.