Comments on: Bridge wireless cards

By: bodhi.zazen

bodhi.zazen — Wed, 25 Jan 2012 16:02:47 +0000

@Nathan: Glad it worked for you, thank you for the tip.

By: Nathan

Nathan — Tue, 24 Jan 2012 21:07:00 +0000

This worked perfectly on Debian (squeeze)! The only step I did differently was that I used openvpn to create the tap device:

openvpn –mktun –dev tap0 –user

Thanks for the info!

By: bodhi.zazen

bodhi.zazen — Mon, 09 Jan 2012 22:53:20 +0000

@majikins with virt-manager you do not use a tap at all, you configure your network interface via virt-manager and use the bridged option.

Looks something like this : http://www.linux-kvm.com/sites/default/files/virt-manager-bridged.png

By: majikins

majikins — Mon, 09 Jan 2012 21:11:45 +0000

I’m stuck at step number 6. I use virt-manager to start my kvm’s and not cli. I can’t seem to figure out how to get the vm to use tap as you have stated. Please could you provide some guidance? Also tap does not come up automatically on restart – how do I keep settings?

By: Research group digest – ulno.net

Research group digest – ulno.net — Tue, 05 Apr 2011 01:55:15 +0000

[...] How to connect guest and host [...]

By: dlh

dlh — Mon, 17 Jan 2011 21:12:28 +0000

FWIW, with Ubuntu 10.10, and qemu (think its 12.5)…

Could not get the following from your example above to be accepted:
# Allow only related / established connections fron the LAN/internet to the guest
iptables -A FORWARD -i wlan0 -o tap0 -m –state RELATED,ESTABLISHED -j ACCEPT

Did get the two following possibilities accepted:
sudo iptables -A FORWARD -i eth0 -o tap0 -m conntrack –ctstate ESTABLISHED,RELATED -j ACCEPT

(replaced “-state” with “conntrack –ctstate)

and

sudo iptables -A FORWARD -i eth0 -o tap0 -m state –state ESTABLISHED,RELATED -j ACCEPT

(replaced “-state” with “state –state”)

I haven’t yet obtained access to the outside world from guest, nor access to guest from outside world, only between guest and host. But I expect I’ll eventually figure it out, or figure out what else I may have done incorrectly. Also not yet sure what difference, if any, there is between –state and –ctstate…

By: linux video tutorials

linux video tutorials — Fri, 12 Nov 2010 06:25:01 +0000

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: bodhi.zazen

bodhi.zazen — Mon, 11 Oct 2010 22:14:53 +0000

You are correct, updated.

Hope it is otherwise working for you.

By: Kr0m

Kr0m — Sat, 09 Oct 2010 20:22:10 +0000

I think that you forgotten a “0″:
iptables -A FORWARD -i tap0 -o wlan -j ACCEPT –> Wrong
iptables -A FORWARD -i tap0 -o wlan0 -j ACCEPT –> Correct

By: jaymzter

jaymzter — Thu, 17 Sep 2009 04:42:47 +0000

this worked for my VMware installation as well. Super job!