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Old 09-06-2011, 09:22 AM   #1
Registered: Jun 2004
Distribution: Slack x86 current
Posts: 134

Rep: Reputation: 16
How to enable RDP access to virtualbox OSE


I'm running virtualbox 4.0.8 OSE built from

I tried to enable RDP access to a virtual machine but I cannot access it.

I've done the following:

- checked if the slackbuild disables RDP - Not disabled
- enabled in the VM setup (port 3389 , auth null)
- start the VM

In the Session information window I can see the following:
- under Runtime Remote desktop server port reports 'not available'
- under Details Remote desktop server port reports 3389

I tried to do an nmap localhost -p 3389 on the host machine and port is closed.
No firewall rules are active
Of course trying to connect to localhost from a KRDC gives no result.

Any hint?

Thank you all

Best regards

Alessandro Barisone
Old 09-06-2011, 10:52 AM   #2
Registered: Jun 2004
Location: USA
Distribution: Slackware
Posts: 137

Rep: Reputation: 21

I've had trouble with RDP, too. The only way I can make it work is to start the virtual machine using the 'VBoxHeadless' command from a terminal. If I recall correctly from the VB documentation, using vboxheadless overrides (takes precedence) over whatever ever settings you have in place for that vm.

One other thing: have you confirmed that vbox open source edition (ose) supports RDP? I use the binary, closed version of virtualbox (for reasons I won't go into here).
Old 09-06-2011, 11:34 AM   #3
Registered: Jun 2004
Distribution: Slack x86 current
Posts: 134

Original Poster
Rep: Reputation: 16
You was right. I've read the documentation (RTFM) here and I've learned the following..

The OSE edition misses these features (in comparison to the binary edition):
- The virtual USB 2.0 (EHCI) device; see the section called “USB settings”.
- VirtualBox Remote Desktop Protocol (VRDP) support; see the section called “Remote display (VRDP support)”.
- Intel PXE boot ROM with support for the E1000 network card.
- Experimental support for PCI passthrough on Linux hosts; see the section called “PCI passthrough”.

These feature can be added to the OSE edition installing the VirtualBox Extension Pack from here

So I have installed the extension pack .. and now I have RDP working :-)

Thank you for the hint




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