[ubuntu-za] Sharing network connections in Ubuntu

Josh Brodrick josholikestofly at gmail.com
Fri May 7 09:51:36 BST 2010

On Fri, May 7, 2010 at 10:21 AM, Michael Gorven <michael at gorven.za.net>wrote:

> On Friday 07 May 2010 10:03:20 Josh Brodrick wrote:
> > I have a question rather than a pressing problem. I have an ADSL router
> > which is connected to the internet, and acts as the dhcp server to 4
> wired
> > computers and a couple wireless ones. I want to add another old laptop to
> > the network (it does not have wireless) but have no more wired ports
> > available on the router. From what I understand I can connect it via a
> > crossover cable to the second network card on one of my desktops, and use
> > firestarter to configure it (All the computers have firestarter installed
> > and configured). However, I dont need this additional laptop to have
> > internet access, as it only serves as a frontend to mythtv. It therefore
> > only needs to be able to communicate on the local network. Any advice on
> > how to configure this using firestarter?
> The easiest solution is to bridge the two network cards on the desktop so
> that
> it basically acts like a switch. The laptop would DHCP from the ADSL modem
> and
> have full access to the internet. The following in /etc/network/interfaces
> should do the trick after installing bridge-utils.
> auto eth0
> iface eth0 inet manual
> auto eth1
> iface eth1 inet manual
> auto br0
> iface br0 iface dhcp
>    bridge_ports eth0 eth1
>    bridge_maxwait 5
> Michael

Hi Michael

Thanks so much for the quick reply! Just so i understand then, this way the
laptop would be assigned its IP and everything directly from the ADSL
router, through the desktop (and if looking from the router side just look
like any normal pc connected directly to the router?) And would the fact
that I have firestarter configured on the desktop not block or affect this
bridging in any way?
Thanks so much!

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