Comments on: Linux : Configuring a network bridge for your Virtual Machines http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/ On the fly saving of few useful (?) tech tips Sun, 05 Feb 2012 16:37:55 +0000 hourly 1 http://wordpress.org/?v=3.1.3 By: linux video tutorials http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8756 linux video tutorials Fri, 12 Nov 2010 06:30:33 +0000 http://www.sakana.fr/blog/?p=229#comment-8756 LINUX bridge is a way to connect two Ethernet segments together in a protocol independent way.Packets are forwarded based on Ethernet address, rather than IP address (like a router). Since forwarding is done at Layer 2, all protocols can go transparently through a bridge. LINUX bridge is a way to connect two Ethernet segments together in a protocol independent way.Packets are forwarded based on Ethernet address, rather than IP address (like a router). Since forwarding is done at Layer 2, all protocols can go transparently through a bridge.

]]> By: George Notaras http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8093 George Notaras Wed, 15 Apr 2009 15:01:34 +0000 http://www.sakana.fr/blog/?p=229#comment-8093 Hi Stéphane,

Unfortunately, I have never really stressed a virtual machine in Virtualbox, so I cannot comment on its performance. Generally speaking, Vbox 2.2 seems like the best release so far.

Also, it is the first time I use a pre-compiled version of Virtualbox in order to make use of the SATA controller, which is a closed source feature, but it is said to improve the overall virtual disk performance.

I was not aware of the issue with the utilization of more than 1 cpu.

]]> By: Stéphane Kattoor http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8088 Stéphane Kattoor Tue, 14 Apr 2009 08:59:23 +0000 http://www.sakana.fr/blog/?p=229#comment-8088 Hello Lamcro,

Then there should not be any problem with the script provided in this post (except that you’ll probably have to adapt it for Ubuntu). Your webserver should be accessible from the Ubuntu host (as well as from any host on the same LAN should it matter).

The networking parameters obviously have to be correctly set on the webserver though (at least an IP on the same network than the Ubuntu host).

A little checklist to help troubleshooting your problem :
1) Run an “ifconfig -a” on the Guest and on the Host, check they have IP addresses on the same network
2) If you use bridged networking, then you’ll need to adapt/run the script, then check your VirtualBox settings for the network.

=> I’ve attached my VirtualBox networking parameters in the main post for your reference.

Please keep us posted with the resolution of your problem.

Stéphane

]]> By: lamcro http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8086 lamcro Mon, 13 Apr 2009 22:27:29 +0000 http://www.sakana.fr/blog/?p=229#comment-8086 Notaras, Ubuntu 8.10 has VBox 2.0.4 in their repository. I'll have to download it myself. Thanks for the info. Notaras,
Ubuntu 8.10 has VBox 2.0.4 in their repository.

I’ll have to download it myself.

Thanks for the info.

]]> By: lamcro http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8084 lamcro Mon, 13 Apr 2009 22:21:37 +0000 http://www.sakana.fr/blog/?p=229#comment-8084 Kattoor, You are almost correct: I want to access the web server from my laptop's web browser. I'm not even thinking of the "outer limits" right now. I just want to have a personal web server I can play with, regardless of having interness access or not. Kattoor,
You are almost correct: I want to access the web server from my laptop’s web browser. I’m not even thinking of the “outer limits” right now. I just want to have a personal web server I can play with, regardless of having interness access or not.

]]> By: Stéphane Kattoor http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8083 Stéphane Kattoor Mon, 13 Apr 2009 20:30:48 +0000 http://www.sakana.fr/blog/?p=229#comment-8083 Hello George,

I haven’t have a chance to try VirtualBox 2.2 yet … so thanks for the information !

My main problem is that it is not possible to give access to more than 1 CPU to a VirtualBox VM, so under heavy I/O load (Network + Disk), the performance crashes …

=> As you tried VirtualBox 2.2, did you notice any performance improvement ?

Stéphane

]]> By: Stéphane Kattoor http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8082 Stéphane Kattoor Mon, 13 Apr 2009 20:24:23 +0000 http://www.sakana.fr/blog/?p=229#comment-8082 Hi Lamcro,

I’m not completely sure I understood what you want to do. Let me rephrase what I believe is your situation : you have a laptop running Ubuntu on top of which you are running a Debian VM. That VM is a web server. The Ubuntu laptop is connected to a Linksys router through a WiFi connection and you want to access the web server from the Internet (that is from the “other side” of the router).

Is that correct ?

If it is, the you’ll need to put some kind of port forwarding at the router level, so that incoming connections to the port HTTP (tcp/80) will be redirected to the VM’s IP.

Note : I don’t own a Linksys router myself, but I think the MAC filtering is only there to prevent the association to the Access Point, not to filter packets. It doesn’t hurt to allow the VM’s MAC though, but I don’t think it is needed.

Let me know if you got it to work, or if I misunderstood you :-)

Stéphane

]]> By: George Notaras http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8081 George Notaras Mon, 13 Apr 2009 20:17:50 +0000 http://www.sakana.fr/blog/?p=229#comment-8081 The latest version of VirtualBox (2.2 at the time of writing) does not require setting up a bridge and attaching the physical and virtual network interfaces to it. You just select 'bridged networking' in the VM's network settings and it Just Works(TM). I used to have various similar scripts for QEMU, Xen and pre-2.2 VirtualBox. I am happy that I will now put them into the archive :) The latest version of VirtualBox (2.2 at the time of writing) does not require setting up a bridge and attaching the physical and virtual network interfaces to it. You just select ‘bridged networking’ in the VM’s network settings and it Just Works(TM).

I used to have various similar scripts for QEMU, Xen and pre-2.2 VirtualBox. I am happy that I will now put them into the archive :)

]]> By: lamcro http://www.sakana.fr/blog/2009/04/13/linux-configuring-a-network-bridge-for-your-virtual-machines/comment-page-1/#comment-8080 lamcro Mon, 13 Apr 2009 20:03:29 +0000 http://www.sakana.fr/blog/?p=229#comment-8080 First of all: THANK YOU! Second: HELP! I have a Debian web server VM I run from my ubuntu laptop. I would like to access it through the web browser. Note: I use a Linksys router at home, and it's MAC-address filtered (only my laptop is allowed to use the router). What changes should I do on the batch file. Do I have to add the VM's MAC address on the router? First of all: THANK YOU!

Second: HELP!
I have a Debian web server VM I run from my ubuntu laptop. I would like to access it through the web browser. Note: I use a Linksys router at home, and it’s MAC-address filtered (only my laptop is allowed to use the router).

What changes should I do on the batch file.
Do I have to add the VM’s MAC address on the router?

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