How to use ethernet for private lan and 3g for external network at the same time?

James Hogarth james.hogarth at
Thu Aug 5 17:21:18 UTC 2010

You will need to configure appropriate routing rules. Default gateway of
your 3g device and the Ethernet interface routing private traffic. Can't
recall the right configuration for this off the top of my head but if no one
responds with it by the time I'm back in the office tomorrow I'll reply with
it then


Sent from Android Mobile

On 5 Aug 2010 17:44, "archayl" <archayl at> wrote:
> My situation is:
> I'm using ethernet connection in office to get the file sharing and
> other office related stuff working.
> At the same time, I want to browse the internet using 3g modem (USB
> dongle). My workplace is using proxy to block connection to outside
> world. The only way to get access to the internet is through the 3g
> modem.
> Currently, I have to switch off the ethernet to go to the internet, as
> my computer will utilise the available and already connected 3g modem.
> To get the office stuff working again, I need to turn on the ethernet
> and I lost connection to outside world.
> Is there any way to get both working at the same time? I mean like when
> I type in address that is in Local Network, it'll use the ethernet.
> Else, it'll use the 3g connection.
> I'm using Ubuntu 10.04.
> Thanks in advance.
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