For example, to set up an incoming NAT connection to an http server on the Guest OS would require the following: You can use any ports on the host greater than 1024 which are not already in use by a service. You will need to know which ports on the Guest OS the service uses and decide which ports to use on the physical host (often but not always you will want to use the same ports on the Guest OS and on the host). You can set up a service on the Guest OS and then set up the host to proxy incoming connections to that service using the command line tool VBoxManage. Both are described below.įor DICE guests see Bridged_Adapter comments, below. Bridged Adapter is also a possibility but you should try port forwarding first. In this case we recommend that you use Port Forwarding. The default virtual machine configuration uses NAT which should be fine for almost anything except if you want to run services on the Guest OS and have them accessable from other machines on the Informatics or University networks or from the internet in general. Note that you have to first mount the image file or CD to make it available to your virtual machine - use the CD menu within the !VirtualBox GUI to do this.Īlternatively you can use one of the pre-built base images (such as Fedora10) and a local differencing disk, see ] comments, below. You can then install any Guest OS from an ISO image or physical CD (eg. Follow the GUI Wizard to create a new virtual host and virtual disk image on the physical disk (ideally in /disk/scratch rather than your home directory for obvious performance reasons). Login to your DICE machine as normal and start up a terminal and run the VirtualBox command. What's worse, they're off by default on all our standard desktop machines. These are crucial for best performance of host and guest their absence is implicated in some problems experienced on 745s. For performance reasons if you are going to make heavy use of a virtual machine on your desktop you should ask support to make sure that CPU Virtualisation Extensions (VT-X) are enabled in your machine's BIOS, if available (all 745s and newer).
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