Comments on: VirtualBox Host Interface Networking with NAT

By: Frans

Frans — Sun, 17 Jul 2011 18:07:55 +0000

Very good article !! Thank you for this, it really solves my problem.. ;)

By: Frank

Frank — Thu, 09 Jun 2011 18:56:05 +0000

This is outdated and should be removed. Configuring the host to use tap0 in VirtualBox settings doesn’t work – the tap0 interface doesn’t exist in the Linux guest.

By: boulboul

boulboul — Fri, 04 Dec 2009 11:52:56 +0000

Thanks a lot for your email…that has worked. You are great :)

By: gmendoza

gmendoza — Fri, 04 Dec 2009 03:09:22 +0000

The tunctl command creates interfaces temporarily and are not remembered after a reboot. To see if any exist, the following will work:

ifconfig -a | grep tap tap0 Link encap:Ethernet HWaddr 52:da:12:03:e5:d5 tap1 Link encap:Ethernet HWaddr 9a:7e:d5:2c:84:64 tap2 Link encap:Ethernet HWaddr fa:ef:38:a0:b0:06 tap3 Link encap:Ethernet HWaddr 62:fd:aa:0b:e0:46

As you can see, I have four tapX interfaces. To remove them, use the tunctl -d command like the following.

sudo tunctl -d tap0 Set 'tap0' nonpersistent sudo tunctl -d tap1 Set 'tap1' nonpersistent sudo tunctl -d tap2 Set 'tap2' nonpersistent sudo tunctl -d tap3 Set 'tap3' nonpersistent

Hope this helps. Thanks for visiting.

By: boulboul

boulboul — Fri, 04 Dec 2009 02:55:06 +0000

i have setup sp many onterfaces,,,how do i go about deleting all taps please…i am running debian lenny…thanks

By: Денис Лебедев

Денис Лебедев — Sat, 17 Oct 2009 15:06:41 +0000

Занятно пишете, жизненно. Все-таки, для того, чтобы делать действительно интересный блог, нужно не только сообщать о чем-то, но и делать это в интересной форме:)

By: dent

dent — Thu, 03 Sep 2009 17:50:15 +0000

Nice write-up and just what the doctor ordered. For some reason vbox3′s builtin port forwarding on natted interfaces is very flaky when running in headless mode. This is much nicer!

By: Marcello de Sales

Marcello de Sales — Thu, 30 Jul 2009 13:05:24 +0000

The search is over!!! VirtualBox 3.0.2 offers the networking with NAT out-of-the-box with Ubuntu as Host and Guests as Ubuntu and windows. See instructions! No commands, no scripts necessary!

http://distributed-agility.blogspot.com/2009/07/building-clustered-shared-subnetwork.html

By: Jorge

Jorge — Mon, 13 Jul 2009 12:21:40 +0000

Great post!

But with this configuration, udp broadcast don’t work between client machines.
Can anyone have a hint to solve this problem?

Thanks in advance.

Jorge

By: edward

edward — Thu, 02 Jul 2009 20:31:09 +0000

With version 2.1.4 OSE of virtualbox you can just go to Settings -> Network: and change the “Attached to:” from “Nat” to “Host Interface”. Then select your host machine’s active network device from the list. Start up your guest and it should pick up an IP from your networks’ Dhcp server. If you have no DHCP server configure the guest with a static IP. Note, you may have to open a terminal and run dhclient3 as root or with sudo to get your guest to pick up an IP via dhcp. Otherwise it should just work. It did for me.

thanks
emk

By: scott

scott — Tue, 30 Jun 2009 19:14:23 +0000

I have been using something similar I believe @ work, but the problem is it is updating the DNS with my NAT IP address. Do one of the iptables rules above stop that from happening ?

By: Mark Nicholas

Mark Nicholas — Wed, 10 Jun 2009 20:28:04 +0000

works great with Air Cards as well (ppp0) modify script from
NAT_OUT=”eth0 wlan0″
to
NAT_OUT=”eth0 wlan0 ppp0″
and voila! life is good

thank you for the help!

By: Redirecionando portas para VirtualBox. @ Matheus Bratfisch

Redirecionando portas para VirtualBox. @ Matheus Bratfisch — Mon, 18 May 2009 18:49:22 +0000

[...] IPtables Tutorial IPTables Port Redirect VirtualBox, com nat VBoxManage Port Forward Linux porta, redirecionamento, [...]

By: gmendoza

gmendoza — Thu, 23 Apr 2009 16:58:57 +0000

You run this script only when you need to start and use Virtualbox. After finished with Virtualbox and it’s all shut down, you can use it again with the stop option. It should not affect your internet connection at all, but if you have firewall rules turned on your host computer, you may need more fine tuning of your rules.

You should know that if you just want to have your guests behind a NAT, this process has been made easier in the most recent versions of Virtualbox.

By: gab

gab — Thu, 23 Apr 2009 10:15:12 +0000

Does it affect my current internet connection if I enable this script? I’m directly connected to a cable modem..

Thanks for writing the steps. I appreciate your help!

By: gmendoza

gmendoza — Tue, 21 Apr 2009 16:10:55 +0000

gab... my apologies for not explaining how to set up the script. my reasoning is that if I explain how to set it up, it becomes redundant across all of my posts. 1. Save the script as a text file in a place you have "write" access to. Your home directory should be fine. Save it as "tap-setup.sh" or any other name you find appropriate. 2. Copy the script to a directory referenced in your $PATH variable. I like to put my own custom scripts in "/usr/local/bin/". This allows you to just type in the name of the script at the command line without having to type it's absolute path. 3. Make the script executable.

sudo chmod +x /usr/local/bin/tap-setup.sh



4. Run the scripte from the command line.

sudo tap-setup.sh start
sudo tap-setup.sh stop



By: gab
gab — Tue, 21 Apr 2009 09:42:27 +0000
How will i use the this script? can you guys provide some steps? many thanks!



By: z0n
z0n — Thu, 09 Apr 2009 14:46:41 +0000
After many late nights trying to get my wifi interface bridged for vbox, I run your script and everything just works – without a single dodgy if-up script or weird, mystical manual interface setting.
Excellent script, Dude – you must wear a beard, I’m sure ;>
Many thanks – you rule!



By: gmendoza
gmendoza — Sat, 04 Apr 2009 13:35:51 +0000
Sure thing!  Glad to have helped.



By: CyberThug
CyberThug — Sat, 04 Apr 2009 05:17:28 +0000
Great Tutorial, may repost in my Blog ? I want to share to my friend in Indonesia.